| 1 | /* Reading and parsing of makefiles for GNU Make.
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| 2 | Copyright (C) 1988-2016 Free Software Foundation, Inc.
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| 3 | This file is part of GNU Make.
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| 4 |
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| 5 | GNU Make is free software; you can redistribute it and/or modify it under the
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| 6 | terms of the GNU General Public License as published by the Free Software
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| 7 | Foundation; either version 3 of the License, or (at your option) any later
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| 8 | version.
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| 9 |
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| 10 | GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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| 11 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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| 12 | A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License along with
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| 15 | this program. If not, see <http://www.gnu.org/licenses/>. */
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| 16 |
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| 17 | #include "makeint.h"
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| 18 |
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| 19 | #include <assert.h>
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| 20 |
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| 21 | #include "filedef.h"
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| 22 | #include "dep.h"
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| 23 | #include "job.h"
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| 24 | #include "commands.h"
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| 25 | #include "variable.h"
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| 26 | #include "rule.h"
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| 27 | #include "debug.h"
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| 28 | #include "hash.h"
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| 29 | #ifdef KMK
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| 30 | # include "kbuild.h"
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| 31 | #endif
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| 32 |
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| 33 | #ifdef WINDOWS32
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| 34 | #include <windows.h>
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| 35 | #include "sub_proc.h"
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| 36 | #else /* !WINDOWS32 */
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| 37 | #ifndef _AMIGA
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| 38 | #ifndef VMS
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| 39 | #include <pwd.h>
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| 40 | #else
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| 41 | struct passwd *getpwnam (char *name);
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| 42 | #endif
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| 43 | #endif
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| 44 | #endif /* !WINDOWS32 */
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| 45 |
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| 46 | /* A 'struct ebuffer' controls the origin of the makefile we are currently
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| 47 | eval'ing.
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| 48 | */
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| 49 |
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| 50 | struct ebuffer
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| 51 | {
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| 52 | char *buffer; /* Start of the current line in the buffer. */
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| 53 | char *bufnext; /* Start of the next line in the buffer. */
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| 54 | char *bufstart; /* Start of the entire buffer. */
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| 55 | #ifdef CONFIG_WITH_VALUE_LENGTH
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| 56 | char *eol; /* End of the current line in the buffer. */
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| 57 | #endif
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| 58 | unsigned int size; /* Malloc'd size of buffer. */
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| 59 | FILE *fp; /* File, or NULL if this is an internal buffer. */
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| 60 | floc floc; /* Info on the file in fp (if any). */
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| 61 | };
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| 62 |
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| 63 | /* Track the modifiers we can have on variable assignments */
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| 64 |
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| 65 | struct vmodifiers
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| 66 | {
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| 67 | unsigned int assign_v:1;
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| 68 | unsigned int define_v:1;
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| 69 | unsigned int undefine_v:1;
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| 70 | unsigned int export_v:1;
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| 71 | unsigned int override_v:1;
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| 72 | unsigned int private_v:1;
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| 73 | };
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| 74 |
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| 75 | /* Types of "words" that can be read in a makefile. */
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| 76 | enum make_word_type
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| 77 | {
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| 78 | w_bogus, w_eol, w_static, w_variable, w_colon, w_dcolon, w_semicolon,
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| 79 | w_varassign
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| 80 | };
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| 81 |
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| 82 |
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| 83 | /* A 'struct conditionals' contains the information describing
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| 84 | all the active conditionals in a makefile.
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| 85 |
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| 86 | The global variable 'conditionals' contains the conditionals
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| 87 | information for the current makefile. It is initialized from
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| 88 | the static structure 'toplevel_conditionals' and is later changed
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| 89 | to new structures for included makefiles. */
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| 90 |
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| 91 | struct conditionals
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| 92 | {
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| 93 | unsigned int if_cmds; /* Depth of conditional nesting. */
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| 94 | unsigned int allocated; /* Elts allocated in following arrays. */
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| 95 | char *ignoring; /* Are we ignoring or interpreting?
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| 96 | 0=interpreting, 1=not yet interpreted,
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| 97 | 2=already interpreted */
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| 98 | char *seen_else; /* Have we already seen an 'else'? */
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| 99 | #ifdef KMK
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| 100 | char ignoring_first[8];
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| 101 | char seen_else_first[8];
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| 102 | #endif
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| 103 | };
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| 104 |
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| 105 | #ifdef KMK
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| 106 | static struct conditionals toplevel_conditionals =
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| 107 | {
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| 108 | 0,
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| 109 | sizeof (toplevel_conditionals.ignoring_first),
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| 110 | &toplevel_conditionals.ignoring_first[0],
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| 111 | &toplevel_conditionals.seen_else_first[0],
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| 112 | "", ""
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| 113 | };
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| 114 | #else /* !KMK */
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| 115 | static struct conditionals toplevel_conditionals;
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| 116 | #endif /* !KMK */
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| 117 | static struct conditionals *conditionals = &toplevel_conditionals;
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| 118 |
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| 119 |
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| 120 | /* Default directories to search for include files in */
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| 121 |
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| 122 | static const char *default_include_directories[] =
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| 123 | {
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| 124 | #ifndef KMK
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| 125 | #if defined(WINDOWS32) && !defined(INCLUDEDIR)
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| 126 | /* This completely up to the user when they install MSVC or other packages.
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| 127 | This is defined as a placeholder. */
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| 128 | # define INCLUDEDIR "."
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| 129 | #endif
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| 130 | # ifdef INCLUDEDIR /* bird */
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| 131 | INCLUDEDIR,
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| 132 | # else /* bird */
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| 133 | ".", /* bird */
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| 134 | # endif /* bird */
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| 135 | #ifndef _AMIGA
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| 136 | "/usr/gnu/include",
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| 137 | "/usr/local/include",
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| 138 | "/usr/include",
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| 139 | #endif
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| 140 | #endif /* !KMK */
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| 141 | 0
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| 142 | };
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| 143 |
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| 144 | /* List of directories to search for include files in */
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| 145 |
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| 146 | static const char **include_directories;
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| 147 |
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| 148 | /* Maximum length of an element of the above. */
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| 149 |
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| 150 | static unsigned int max_incl_len;
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| 151 |
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| 152 | /* The filename and pointer to line number of the
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| 153 | makefile currently being read in. */
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| 154 |
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| 155 | const floc *reading_file = 0;
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| 156 |
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| 157 | /* The chain of files read by read_all_makefiles. */
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| 158 |
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| 159 | static struct goaldep *read_files = 0;
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| 160 |
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| 161 | static struct goaldep *eval_makefile (const char *filename, int flags);
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| 162 | static void eval (struct ebuffer *buffer, int flags);
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| 163 |
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| 164 | static long readline (struct ebuffer *ebuf);
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| 165 | static void do_undefine (char *name, enum variable_origin origin,
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| 166 | struct ebuffer *ebuf);
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| 167 | static struct variable *do_define (char *name IF_WITH_VALUE_LENGTH_PARAM(char *eos),
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| 168 | enum variable_origin origin, struct ebuffer *ebuf);
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| 169 | #ifndef CONFIG_WITH_VALUE_LENGTH
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| 170 | static int conditional_line (char *line, int len, const floc *flocp);
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| 171 | #else
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| 172 | static int conditional_line (char *line, char *eol, int len, const floc *flocp);
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| 173 | #endif
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| 174 | static void record_files (struct nameseq *filenames, const char *pattern,
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| 175 | const char *pattern_percent, char *depstr,
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| 176 | unsigned int cmds_started, char *commands,
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| 177 | unsigned int commands_idx, int two_colon,
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| 178 | char prefix, const floc *flocp);
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| 179 | static void record_target_var (struct nameseq *filenames, char *defn,
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| 180 | enum variable_origin origin,
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| 181 | struct vmodifiers *vmod,
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| 182 | const floc *flocp);
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| 183 | static enum make_word_type get_next_mword (char *buffer, char *delim,
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| 184 | char **startp, unsigned int *length);
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| 185 | #ifndef CONFIG_WITH_VALUE_LENGTH
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| 186 | static void remove_comments (char *line);
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| 187 | static char *find_char_unquote (char *string, int map);
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| 188 | #else /* CONFIG_WITH_VALUE_LENGTH */
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| 189 | static char *remove_comments (char *line, char *eos);
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| 190 | static char *find_char_unquote (char *string, int map, unsigned int string_len);
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| 191 | K_INLINE char *find_char_unquote_0 (char *string, int stop1, int map, char **eosp);
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| 192 | #endif /* CONFIG_WITH_VALUE_LENGTH */
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| 193 | static char *unescape_char (char *string, int c);
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| 194 |
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| 195 |
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| 196 | /* Compare a word, both length and contents.
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| 197 | P must point to the word to be tested, and WLEN must be the length.
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| 198 | */
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| 199 | #define word1eq(s) (wlen == CSTRLEN (s) && strneq (s, p, CSTRLEN (s)))
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| 200 |
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| 201 | |
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| 202 |
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| 203 | /* Read in all the makefiles and return a chain of targets to rebuild. */
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| 204 |
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| 205 | struct goaldep *
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| 206 | read_all_makefiles (const char **makefiles)
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| 207 | {
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| 208 | unsigned int num_makefiles = 0;
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| 209 |
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| 210 | /* Create *_LIST variables, to hold the makefiles, targets, and variables
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| 211 | we will be reading. */
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| 212 |
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| 213 | define_variable_cname ("MAKEFILE_LIST", "", o_file, 0);
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| 214 |
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| 215 | DB (DB_BASIC, (_("Reading makefiles...\n")));
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| 216 |
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| 217 | /* If there's a non-null variable MAKEFILES, its value is a list of
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| 218 | files to read first thing. But don't let it prevent reading the
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| 219 | default makefiles and don't let the default goal come from there. */
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| 220 |
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| 221 | {
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| 222 | char *value;
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| 223 | char *name, *p;
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| 224 | unsigned int length;
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| 225 |
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| 226 | {
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| 227 | /* Turn off --warn-undefined-variables while we expand MAKEFILES. */
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| 228 | int save = warn_undefined_variables_flag;
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| 229 | warn_undefined_variables_flag = 0;
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| 230 |
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| 231 | #ifndef CONFIG_WITH_VALUE_LENGTH
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| 232 | value = allocated_variable_expand ("$(MAKEFILES)");
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| 233 | #else
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| 234 | value = allocated_variable_expand_2 (STRING_SIZE_TUPLE("$(MAKEFILES)"), NULL);
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| 235 | #endif
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| 236 |
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| 237 | warn_undefined_variables_flag = save;
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| 238 | }
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| 239 |
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| 240 | /* Set NAME to the start of next token and LENGTH to its length.
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| 241 | MAKEFILES is updated for finding remaining tokens. */
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| 242 | p = value;
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| 243 |
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| 244 | while ((name = find_next_token ((const char **)&p, &length)) != 0)
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| 245 | {
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| 246 | if (*p != '\0')
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| 247 | *p++ = '\0';
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| 248 | eval_makefile (name, RM_NO_DEFAULT_GOAL|RM_INCLUDED|RM_DONTCARE);
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| 249 | }
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| 250 |
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| 251 | free (value);
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| 252 | }
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| 253 |
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| 254 | /* Read makefiles specified with -f switches. */
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| 255 |
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| 256 | if (makefiles != 0)
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| 257 | while (*makefiles != 0)
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| 258 | {
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| 259 | struct goaldep *d = eval_makefile (*makefiles, 0);
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| 260 |
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| 261 | if (errno)
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| 262 | perror_with_name ("", *makefiles);
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| 263 |
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| 264 | /* Reuse the storage allocated for the read_file. */
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| 265 | *makefiles = dep_name (d);
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| 266 | ++num_makefiles;
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| 267 | ++makefiles;
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| 268 | }
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| 269 |
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| 270 | /* If there were no -f switches, try the default names. */
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| 271 |
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| 272 | if (num_makefiles == 0)
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| 273 | {
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| 274 | static const char *default_makefiles[] =
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| 275 | #ifdef VMS
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| 276 | /* all lower case since readdir() (the vms version) 'lowercasifies' */
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| 277 | /* TODO: Above is not always true, this needs more work */
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| 278 | # ifdef KMK
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| 279 | { "makefile.kmk", "makefile.vms", "gnumakefile.", "makefile.", 0 };
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| 280 | # else
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| 281 | { "makefile.vms", "gnumakefile", "makefile", 0 };
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| 282 | # endif
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| 283 | #else
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| 284 | #ifdef _AMIGA
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| 285 | # ifdef KMK
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| 286 | { "Makefile.kmk", "makefile.kmk", "GNUmakefile", "Makefile", "SMakefile", 0 };
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| 287 | # else
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| 288 | { "GNUmakefile", "Makefile", "SMakefile", 0 };
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| 289 | # endif
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| 290 | #else /* !Amiga && !VMS */
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| 291 | #ifdef WINDOWS32
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| 292 | # ifdef KMK
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| 293 | { "Makefile.kmk", "makefile.kmk", "GNUmakefile", "makefile", "Makefile", "makefile.mak", 0 };
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| 294 | # else
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| 295 | { "GNUmakefile", "makefile", "Makefile", "makefile.mak", 0 };
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| 296 | # endif
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| 297 | #else /* !Amiga && !VMS && !WINDOWS32 */
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| 298 | # ifdef KMK
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| 299 | { "Makefile.kmk", "makefile.kmk", "GNUmakefile", "makefile", "Makefile", 0 };
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| 300 | # else
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| 301 | { "GNUmakefile", "makefile", "Makefile", 0 };
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| 302 | # endif
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| 303 | #endif /* !Amiga && !VMS && !WINDOWS32 */
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| 304 | #endif /* AMIGA */
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| 305 | #endif /* VMS */
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| 306 | const char **p = default_makefiles;
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| 307 | while (*p != 0 && !file_exists_p (*p))
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| 308 | ++p;
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| 309 |
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| 310 | if (*p != 0)
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| 311 | {
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| 312 | eval_makefile (*p, 0);
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| 313 | if (errno)
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| 314 | perror_with_name ("", *p);
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| 315 | }
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| 316 | else
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| 317 | {
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| 318 | /* No default makefile was found. Add the default makefiles to the
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| 319 | 'read_files' chain so they will be updated if possible. */
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| 320 | struct goaldep *tail = read_files;
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| 321 | /* Add them to the tail, after any MAKEFILES variable makefiles. */
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| 322 | while (tail != 0 && tail->next != 0)
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| 323 | tail = tail->next;
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| 324 | for (p = default_makefiles; *p != 0; ++p)
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| 325 | {
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| 326 | struct goaldep *d = alloc_goaldep ();
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| 327 | d->file = enter_file (strcache_add (*p));
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| 328 | /* Tell update_goal_chain to bail out as soon as this file is
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| 329 | made, and main not to die if we can't make this file. */
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| 330 | d->flags = RM_DONTCARE;
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| 331 | if (tail == 0)
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| 332 | read_files = d;
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| 333 | else
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| 334 | tail->next = d;
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| 335 | tail = d;
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| 336 | }
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| 337 | if (tail != 0)
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| 338 | tail->next = 0;
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| 339 | }
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| 340 | }
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| 341 |
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| 342 | return read_files;
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| 343 | }
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| 344 | |
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| 345 |
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| 346 | /* Install a new conditional and return the previous one. */
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| 347 |
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| 348 | static struct conditionals *
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| 349 | install_conditionals (struct conditionals *new)
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| 350 | {
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| 351 | struct conditionals *save = conditionals;
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| 352 |
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| 353 | #ifndef KMK
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| 354 | memset (new, '\0', sizeof (*new));
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| 355 | #else /* KMK */
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| 356 | new->if_cmds = 0;
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| 357 | new->allocated = sizeof (new->ignoring_first);
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| 358 | new->ignoring = new->ignoring_first;
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| 359 | new->seen_else = new->seen_else_first;
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| 360 | #endif /* KMK */
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| 361 | conditionals = new;
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| 362 |
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| 363 | return save;
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| 364 | }
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| 365 |
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| 366 | /* Free the current conditionals and reinstate a saved one. */
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| 367 |
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| 368 | static void
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| 369 | restore_conditionals (struct conditionals *saved)
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| 370 | {
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| 371 | /* Free any space allocated by conditional_line. */
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| 372 | #ifdef KMK
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| 373 | if (conditionals->allocated > sizeof (conditionals->ignoring_first))
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| 374 | {
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| 375 | #endif
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| 376 | free (conditionals->ignoring);
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| 377 | free (conditionals->seen_else);
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| 378 | #ifdef KMK
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| 379 | }
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| 380 | #endif
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| 381 |
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| 382 | /* Restore state. */
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| 383 | conditionals = saved;
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| 384 | }
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| 385 | |
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| 386 |
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| 387 | static struct goaldep *
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| 388 | eval_makefile (const char *filename, int flags)
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| 389 | {
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| 390 | struct goaldep *deps;
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| 391 | struct ebuffer ebuf;
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| 392 | const floc *curfile;
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| 393 | char *expanded = 0;
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| 394 | int makefile_errno;
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| 395 |
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| 396 | ebuf.floc.filenm = filename; /* Use the original file name. */
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| 397 | ebuf.floc.lineno = 1;
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| 398 | ebuf.floc.offset = 0;
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| 399 |
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| 400 | if (ISDB (DB_VERBOSE))
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| 401 | {
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| 402 | printf (_("Reading makefile '%s'"), filename);
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| 403 | if (flags & RM_NO_DEFAULT_GOAL)
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| 404 | printf (_(" (no default goal)"));
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| 405 | if (flags & RM_INCLUDED)
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| 406 | printf (_(" (search path)"));
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| 407 | if (flags & RM_DONTCARE)
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| 408 | printf (_(" (don't care)"));
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| 409 | if (flags & RM_NO_TILDE)
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| 410 | printf (_(" (no ~ expansion)"));
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| 411 | puts ("...");
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| 412 | }
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| 413 |
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| 414 | /* First, get a stream to read. */
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| 415 |
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| 416 | /* Expand ~ in FILENAME unless it came from 'include',
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| 417 | in which case it was already done. */
|
|---|
| 418 | if (!(flags & RM_NO_TILDE) && filename[0] == '~')
|
|---|
| 419 | {
|
|---|
| 420 | expanded = tilde_expand (filename);
|
|---|
| 421 | if (expanded != 0)
|
|---|
| 422 | filename = expanded;
|
|---|
| 423 | }
|
|---|
| 424 |
|
|---|
| 425 | ENULLLOOP (ebuf.fp, fopen (filename, "r"));
|
|---|
| 426 |
|
|---|
| 427 | /* Save the error code so we print the right message later. */
|
|---|
| 428 | makefile_errno = errno;
|
|---|
| 429 |
|
|---|
| 430 | /* Check for unrecoverable errors: out of mem or FILE slots. */
|
|---|
| 431 | switch (makefile_errno)
|
|---|
| 432 | {
|
|---|
| 433 | #ifdef EMFILE
|
|---|
| 434 | case EMFILE:
|
|---|
| 435 | #endif
|
|---|
| 436 | #ifdef ENFILE
|
|---|
| 437 | case ENFILE:
|
|---|
| 438 | #endif
|
|---|
| 439 | case ENOMEM:
|
|---|
| 440 | {
|
|---|
| 441 | const char *err = strerror (makefile_errno);
|
|---|
| 442 | OS (fatal, reading_file, "%s", err);
|
|---|
| 443 | }
|
|---|
| 444 | }
|
|---|
| 445 |
|
|---|
| 446 | /* If the makefile wasn't found and it's either a makefile from
|
|---|
| 447 | the 'MAKEFILES' variable or an included makefile,
|
|---|
| 448 | search the included makefile search path for this makefile. */
|
|---|
| 449 | if (ebuf.fp == 0 && (flags & RM_INCLUDED) && *filename != '/')
|
|---|
| 450 | {
|
|---|
| 451 | unsigned int i;
|
|---|
| 452 | for (i = 0; include_directories[i] != 0; ++i)
|
|---|
| 453 | {
|
|---|
| 454 | const char *included = concat (3, include_directories[i],
|
|---|
| 455 | "/", filename);
|
|---|
| 456 | ebuf.fp = fopen (included, "r");
|
|---|
| 457 | if (ebuf.fp)
|
|---|
| 458 | {
|
|---|
| 459 | filename = included;
|
|---|
| 460 | break;
|
|---|
| 461 | }
|
|---|
| 462 | }
|
|---|
| 463 | }
|
|---|
| 464 |
|
|---|
| 465 | /* Now we have the final name for this makefile. Enter it into
|
|---|
| 466 | the cache. */
|
|---|
| 467 | filename = strcache_add (filename);
|
|---|
| 468 |
|
|---|
| 469 | /* Add FILENAME to the chain of read makefiles. */
|
|---|
| 470 | deps = alloc_goaldep ();
|
|---|
| 471 | deps->next = read_files;
|
|---|
| 472 | read_files = deps;
|
|---|
| 473 | #ifndef CONFIG_WITH_STRCACHE2
|
|---|
| 474 | deps->file = lookup_file (filename);
|
|---|
| 475 | #else
|
|---|
| 476 | deps->file = lookup_file_cached (filename);
|
|---|
| 477 | #endif
|
|---|
| 478 | if (deps->file == 0)
|
|---|
| 479 | deps->file = enter_file (filename);
|
|---|
| 480 | filename = deps->file->name;
|
|---|
| 481 | deps->flags = flags;
|
|---|
| 482 |
|
|---|
| 483 | free (expanded);
|
|---|
| 484 |
|
|---|
| 485 | /* If the makefile can't be found at all, give up entirely. */
|
|---|
| 486 |
|
|---|
| 487 | if (ebuf.fp == 0)
|
|---|
| 488 | {
|
|---|
| 489 | /* If we did some searching, errno has the error from the last
|
|---|
| 490 | attempt, rather from FILENAME itself. Store it in case the
|
|---|
| 491 | caller wants to use it in a message. */
|
|---|
| 492 | errno = makefile_errno;
|
|---|
| 493 | return deps;
|
|---|
| 494 | }
|
|---|
| 495 |
|
|---|
| 496 | /* Set close-on-exec to avoid leaking the makefile to children, such as
|
|---|
| 497 | $(shell ...). */
|
|---|
| 498 | #ifdef HAVE_FILENO
|
|---|
| 499 | CLOSE_ON_EXEC (fileno (ebuf.fp));
|
|---|
| 500 | #endif
|
|---|
| 501 |
|
|---|
| 502 | /* Add this makefile to the list. */
|
|---|
| 503 | do_variable_definition (&ebuf.floc, "MAKEFILE_LIST", filename, o_file,
|
|---|
| 504 | f_append, 0);
|
|---|
| 505 |
|
|---|
| 506 | #ifdef CONFIG_WITH_COMPILER
|
|---|
| 507 | /* Execute compiled version if repeatedly evaluating this file.
|
|---|
| 508 | ASSUMES file content is unmodified since compilation. */
|
|---|
| 509 | deps->file->eval_count++;
|
|---|
| 510 | if ( deps->file->evalprog
|
|---|
| 511 | # ifdef CONFIG_WITH_COMPILE_EVERYTHING
|
|---|
| 512 | || ( deps->file->eval_count == 1
|
|---|
| 513 | # else
|
|---|
| 514 | || ( deps->file->eval_count == 3
|
|---|
| 515 | # endif
|
|---|
| 516 | && (deps->file->evalprog = kmk_cc_compile_file_for_eval (ebuf.fp, filename)) != NULL) )
|
|---|
| 517 | {
|
|---|
| 518 | curfile = reading_file;
|
|---|
| 519 | reading_file = &ebuf.floc;
|
|---|
| 520 |
|
|---|
| 521 | kmk_exec_eval_file (deps->file->evalprog);
|
|---|
| 522 |
|
|---|
| 523 | reading_file = curfile;
|
|---|
| 524 | fclose (ebuf.fp);
|
|---|
| 525 | alloca (0);
|
|---|
| 526 | return 1;
|
|---|
| 527 | }
|
|---|
| 528 | #elif defined (CONFIG_WITH_MAKE_STATS)
|
|---|
| 529 | deps->file->eval_count++;
|
|---|
| 530 | #endif
|
|---|
| 531 |
|
|---|
| 532 | #ifdef KMK
|
|---|
| 533 | /* Buffer the entire file or at least 256KB (footer.kmk) of it. */
|
|---|
| 534 | {
|
|---|
| 535 | void *stream_buf = NULL;
|
|---|
| 536 | struct stat st;
|
|---|
| 537 | # ifdef KBUILD_OS_WINDOWS
|
|---|
| 538 | if (!birdStatOnFdJustSize(fileno(ebuf.fp), &st.st_size))
|
|---|
| 539 | # else
|
|---|
| 540 | if (!fstat (fileno (ebuf.fp), &st))
|
|---|
| 541 | # endif
|
|---|
| 542 | {
|
|---|
| 543 | int stream_buf_size = 256*1024;
|
|---|
| 544 | if (st.st_size < stream_buf_size)
|
|---|
| 545 | {
|
|---|
| 546 | if (st.st_size)
|
|---|
| 547 | stream_buf_size = (st.st_size + 0xfff) & ~0xfff;
|
|---|
| 548 | else
|
|---|
| 549 | stream_buf_size = 0x1000;
|
|---|
| 550 | }
|
|---|
| 551 | stream_buf = xmalloc (stream_buf_size);
|
|---|
| 552 | setvbuf (ebuf.fp, stream_buf, _IOFBF, stream_buf_size);
|
|---|
| 553 | }
|
|---|
| 554 | #endif
|
|---|
| 555 |
|
|---|
| 556 | /* Evaluate the makefile */
|
|---|
| 557 |
|
|---|
| 558 | ebuf.size = 200;
|
|---|
| 559 | ebuf.buffer = ebuf.bufnext = ebuf.bufstart = xmalloc (ebuf.size);
|
|---|
| 560 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 561 | ebuf.eol = NULL;
|
|---|
| 562 | #endif
|
|---|
| 563 |
|
|---|
| 564 | curfile = reading_file;
|
|---|
| 565 | reading_file = &ebuf.floc;
|
|---|
| 566 |
|
|---|
| 567 | eval (&ebuf, !(flags & RM_NO_DEFAULT_GOAL));
|
|---|
| 568 |
|
|---|
| 569 | reading_file = curfile;
|
|---|
| 570 |
|
|---|
| 571 | fclose (ebuf.fp);
|
|---|
| 572 |
|
|---|
| 573 | #ifdef KMK
|
|---|
| 574 | if (stream_buf)
|
|---|
| 575 | free (stream_buf);
|
|---|
| 576 | }
|
|---|
| 577 | #endif
|
|---|
| 578 | free (ebuf.bufstart);
|
|---|
| 579 | alloca (0);
|
|---|
| 580 |
|
|---|
| 581 | errno = 0;
|
|---|
| 582 | return deps;
|
|---|
| 583 | }
|
|---|
| 584 |
|
|---|
| 585 | void
|
|---|
| 586 | eval_buffer (char *buffer, const floc *flocp IF_WITH_VALUE_LENGTH_PARAM(char *eos))
|
|---|
| 587 | {
|
|---|
| 588 | struct ebuffer ebuf;
|
|---|
| 589 | struct conditionals *saved;
|
|---|
| 590 | struct conditionals new;
|
|---|
| 591 | const floc *curfile;
|
|---|
| 592 |
|
|---|
| 593 | /* Evaluate the buffer */
|
|---|
| 594 |
|
|---|
| 595 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 596 | ebuf.size = strlen (buffer);
|
|---|
| 597 | #else
|
|---|
| 598 | ebuf.size = eos - buffer;
|
|---|
| 599 | ebuf.eol = eos;
|
|---|
| 600 | assert(strchr(buffer, '\0') == eos);
|
|---|
| 601 | #endif
|
|---|
| 602 | ebuf.buffer = ebuf.bufnext = ebuf.bufstart = buffer;
|
|---|
| 603 | ebuf.fp = NULL;
|
|---|
| 604 |
|
|---|
| 605 | if (flocp)
|
|---|
| 606 | ebuf.floc = *flocp;
|
|---|
| 607 | else if (reading_file)
|
|---|
| 608 | ebuf.floc = *reading_file;
|
|---|
| 609 | else
|
|---|
| 610 | {
|
|---|
| 611 | ebuf.floc.filenm = NULL;
|
|---|
| 612 | ebuf.floc.lineno = 1;
|
|---|
| 613 | ebuf.floc.offset = 0;
|
|---|
| 614 | }
|
|---|
| 615 |
|
|---|
| 616 | curfile = reading_file;
|
|---|
| 617 | reading_file = &ebuf.floc;
|
|---|
| 618 |
|
|---|
| 619 | saved = install_conditionals (&new);
|
|---|
| 620 |
|
|---|
| 621 | eval (&ebuf, 1);
|
|---|
| 622 |
|
|---|
| 623 | restore_conditionals (saved);
|
|---|
| 624 |
|
|---|
| 625 | reading_file = curfile;
|
|---|
| 626 |
|
|---|
| 627 | alloca (0);
|
|---|
| 628 | }
|
|---|
| 629 | |
|---|
| 630 |
|
|---|
| 631 | /* Check LINE to see if it's a variable assignment or undefine.
|
|---|
| 632 |
|
|---|
| 633 | It might use one of the modifiers "export", "override", "private", or it
|
|---|
| 634 | might be one of the conditional tokens like "ifdef", "include", etc.
|
|---|
| 635 |
|
|---|
| 636 | If it's not a variable assignment or undefine, VMOD.V_ASSIGN is 0.
|
|---|
| 637 | Returns LINE.
|
|---|
| 638 |
|
|---|
| 639 | Returns a pointer to the first non-modifier character, and sets VMOD
|
|---|
| 640 | based on the modifiers found if any, plus V_ASSIGN is 1.
|
|---|
| 641 | */
|
|---|
| 642 | static char *
|
|---|
| 643 | parse_var_assignment (const char *line, struct vmodifiers *vmod)
|
|---|
| 644 | {
|
|---|
| 645 | const char *p;
|
|---|
| 646 | memset (vmod, '\0', sizeof (*vmod));
|
|---|
| 647 |
|
|---|
| 648 | /* Find the start of the next token. If there isn't one we're done. */
|
|---|
| 649 | NEXT_TOKEN (line);
|
|---|
| 650 | if (*line == '\0')
|
|---|
| 651 | return (char *)line;
|
|---|
| 652 |
|
|---|
| 653 | p = line;
|
|---|
| 654 | while (1)
|
|---|
| 655 | {
|
|---|
| 656 | int wlen;
|
|---|
| 657 | const char *p2;
|
|---|
| 658 | struct variable v;
|
|---|
| 659 |
|
|---|
| 660 | p2 = parse_variable_definition (p, &v);
|
|---|
| 661 |
|
|---|
| 662 | /* If this is a variable assignment, we're done. */
|
|---|
| 663 | if (p2)
|
|---|
| 664 | break;
|
|---|
| 665 |
|
|---|
| 666 | /* It's not a variable; see if it's a modifier. */
|
|---|
| 667 | p2 = end_of_token (p);
|
|---|
| 668 | wlen = p2 - p;
|
|---|
| 669 |
|
|---|
| 670 | if (word1eq ("export"))
|
|---|
| 671 | vmod->export_v = 1;
|
|---|
| 672 | else if (word1eq ("override"))
|
|---|
| 673 | vmod->override_v = 1;
|
|---|
| 674 | else if (word1eq ("private"))
|
|---|
| 675 | vmod->private_v = 1;
|
|---|
| 676 | else if (word1eq ("define"))
|
|---|
| 677 | {
|
|---|
| 678 | /* We can't have modifiers after 'define' */
|
|---|
| 679 | vmod->define_v = 1;
|
|---|
| 680 | p = next_token (p2);
|
|---|
| 681 | break;
|
|---|
| 682 | }
|
|---|
| 683 | else if (word1eq ("undefine"))
|
|---|
| 684 | {
|
|---|
| 685 | /* We can't have modifiers after 'undefine' */
|
|---|
| 686 | vmod->undefine_v = 1;
|
|---|
| 687 | p = next_token (p2);
|
|---|
| 688 | break;
|
|---|
| 689 | }
|
|---|
| 690 | else
|
|---|
| 691 | /* Not a variable or modifier: this is not a variable assignment. */
|
|---|
| 692 | return (char *)line;
|
|---|
| 693 |
|
|---|
| 694 | /* It was a modifier. Try the next word. */
|
|---|
| 695 | p = next_token (p2);
|
|---|
| 696 | if (*p == '\0')
|
|---|
| 697 | return (char *)line;
|
|---|
| 698 | }
|
|---|
| 699 |
|
|---|
| 700 | /* Found a variable assignment or undefine. */
|
|---|
| 701 | vmod->assign_v = 1;
|
|---|
| 702 | return (char *)p;
|
|---|
| 703 | }
|
|---|
| 704 | |
|---|
| 705 |
|
|---|
| 706 |
|
|---|
| 707 | /* Read file FILENAME as a makefile and add its contents to the data base.
|
|---|
| 708 |
|
|---|
| 709 | SET_DEFAULT is true if we are allowed to set the default goal. */
|
|---|
| 710 |
|
|---|
| 711 | static void
|
|---|
| 712 | eval (struct ebuffer *ebuf, int set_default)
|
|---|
| 713 | {
|
|---|
| 714 | char *collapsed = 0;
|
|---|
| 715 | unsigned int collapsed_length = 0;
|
|---|
| 716 | unsigned int commands_len = 200;
|
|---|
| 717 | char *commands;
|
|---|
| 718 | unsigned int commands_idx = 0;
|
|---|
| 719 | unsigned int cmds_started, tgts_started;
|
|---|
| 720 | int ignoring = 0, in_ignored_define = 0;
|
|---|
| 721 | int no_targets = 0; /* Set when reading a rule without targets. */
|
|---|
| 722 | struct nameseq *filenames = 0;
|
|---|
| 723 | char *depstr = 0;
|
|---|
| 724 | long nlines = 0;
|
|---|
| 725 | int two_colon = 0;
|
|---|
| 726 | char prefix = cmd_prefix;
|
|---|
| 727 | const char *pattern = 0;
|
|---|
| 728 | const char *pattern_percent;
|
|---|
| 729 | floc *fstart;
|
|---|
| 730 | floc fi;
|
|---|
| 731 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 732 | unsigned int tmp_len;
|
|---|
| 733 | #endif
|
|---|
| 734 | #ifdef KMK
|
|---|
| 735 | struct kbuild_eval_data *kdata = 0;
|
|---|
| 736 | int krc;
|
|---|
| 737 | #endif
|
|---|
| 738 |
|
|---|
| 739 | #define record_waiting_files() \
|
|---|
| 740 | do \
|
|---|
| 741 | { \
|
|---|
| 742 | if (filenames != 0) \
|
|---|
| 743 | { \
|
|---|
| 744 | fi.lineno = tgts_started; \
|
|---|
| 745 | fi.offset = 0; \
|
|---|
| 746 | record_files (filenames, pattern, pattern_percent, depstr, \
|
|---|
| 747 | cmds_started, commands, commands_idx, two_colon, \
|
|---|
| 748 | prefix, &fi); \
|
|---|
| 749 | filenames = 0; \
|
|---|
| 750 | } \
|
|---|
| 751 | commands_idx = 0; \
|
|---|
| 752 | no_targets = 0; \
|
|---|
| 753 | pattern = 0; \
|
|---|
| 754 | } while (0)
|
|---|
| 755 |
|
|---|
| 756 | pattern_percent = 0;
|
|---|
| 757 | cmds_started = tgts_started = 1;
|
|---|
| 758 |
|
|---|
| 759 | fstart = &ebuf->floc;
|
|---|
| 760 | fi.filenm = ebuf->floc.filenm;
|
|---|
| 761 |
|
|---|
| 762 | /* Loop over lines in the file.
|
|---|
| 763 | The strategy is to accumulate target names in FILENAMES, dependencies
|
|---|
| 764 | in DEPS and commands in COMMANDS. These are used to define a rule
|
|---|
| 765 | when the start of the next rule (or eof) is encountered.
|
|---|
| 766 |
|
|---|
| 767 | When you see a "continue" in the loop below, that means we are moving on
|
|---|
| 768 | to the next line. If you see record_waiting_files(), then the statement
|
|---|
| 769 | we are parsing also finishes the previous rule. */
|
|---|
| 770 |
|
|---|
| 771 | commands = xmalloc (200);
|
|---|
| 772 |
|
|---|
| 773 | while (1)
|
|---|
| 774 | {
|
|---|
| 775 | unsigned int linelen;
|
|---|
| 776 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 777 | char *eol;
|
|---|
| 778 | #endif
|
|---|
| 779 | char *line;
|
|---|
| 780 | unsigned int wlen;
|
|---|
| 781 | char *p;
|
|---|
| 782 | char *p2;
|
|---|
| 783 | struct vmodifiers vmod;
|
|---|
| 784 |
|
|---|
| 785 | /* At the top of this loop, we are starting a brand new line. */
|
|---|
| 786 | /* Grab the next line to be evaluated */
|
|---|
| 787 | ebuf->floc.lineno += nlines;
|
|---|
| 788 | nlines = readline (ebuf);
|
|---|
| 789 |
|
|---|
| 790 | /* If there is nothing left to eval, we're done. */
|
|---|
| 791 | if (nlines < 0)
|
|---|
| 792 | break;
|
|---|
| 793 |
|
|---|
| 794 | line = ebuf->buffer;
|
|---|
| 795 |
|
|---|
| 796 | /* If this is the first line, check for a UTF-8 BOM and skip it. */
|
|---|
| 797 | if (ebuf->floc.lineno == 1 && line[0] == (char)0xEF
|
|---|
| 798 | && line[1] == (char)0xBB && line[2] == (char)0xBF)
|
|---|
| 799 | {
|
|---|
| 800 | line += 3;
|
|---|
| 801 | if (ISDB(DB_BASIC))
|
|---|
| 802 | {
|
|---|
| 803 | if (ebuf->floc.filenm)
|
|---|
| 804 | printf (_("Skipping UTF-8 BOM in makefile '%s'\n"),
|
|---|
| 805 | ebuf->floc.filenm);
|
|---|
| 806 | else
|
|---|
| 807 | printf (_("Skipping UTF-8 BOM in makefile buffer\n"));
|
|---|
| 808 | }
|
|---|
| 809 | }
|
|---|
| 810 |
|
|---|
| 811 | /* If this line is empty, skip it. */
|
|---|
| 812 | if (line[0] == '\0')
|
|---|
| 813 | continue;
|
|---|
| 814 |
|
|---|
| 815 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 816 | linelen = strlen (line);
|
|---|
| 817 | #else
|
|---|
| 818 | linelen = ebuf->eol - line;
|
|---|
| 819 | assert (strlen (line) == linelen);
|
|---|
| 820 | #endif
|
|---|
| 821 |
|
|---|
| 822 | /* Check for a shell command line first.
|
|---|
| 823 | If it is not one, we can stop treating cmd_prefix specially. */
|
|---|
| 824 | if (line[0] == cmd_prefix)
|
|---|
| 825 | {
|
|---|
| 826 | if (no_targets)
|
|---|
| 827 | /* Ignore the commands in a rule with no targets. */
|
|---|
| 828 | continue;
|
|---|
| 829 |
|
|---|
| 830 | /* If there is no preceding rule line, don't treat this line
|
|---|
| 831 | as a command, even though it begins with a recipe prefix.
|
|---|
| 832 | SunOS 4 make appears to behave this way. */
|
|---|
| 833 |
|
|---|
| 834 | if (filenames != 0)
|
|---|
| 835 | {
|
|---|
| 836 | if (ignoring)
|
|---|
| 837 | /* Yep, this is a shell command, and we don't care. */
|
|---|
| 838 | continue;
|
|---|
| 839 |
|
|---|
| 840 | if (commands_idx == 0)
|
|---|
| 841 | cmds_started = ebuf->floc.lineno;
|
|---|
| 842 |
|
|---|
| 843 | /* Append this command line to the line being accumulated.
|
|---|
| 844 | Skip the initial command prefix character. */
|
|---|
| 845 | if (linelen + commands_idx > commands_len)
|
|---|
| 846 | {
|
|---|
| 847 | commands_len = (linelen + commands_idx) * 2;
|
|---|
| 848 | commands = xrealloc (commands, commands_len);
|
|---|
| 849 | }
|
|---|
| 850 | memcpy (&commands[commands_idx], line + 1, linelen - 1);
|
|---|
| 851 | commands_idx += linelen - 1;
|
|---|
| 852 | commands[commands_idx++] = '\n';
|
|---|
| 853 | continue;
|
|---|
| 854 | }
|
|---|
| 855 | }
|
|---|
| 856 |
|
|---|
| 857 | /* This line is not a shell command line. Don't worry about whitespace.
|
|---|
| 858 | Get more space if we need it; we don't need to preserve the current
|
|---|
| 859 | contents of the buffer. */
|
|---|
| 860 |
|
|---|
| 861 | if (collapsed_length < linelen+1)
|
|---|
| 862 | {
|
|---|
| 863 | collapsed_length = linelen+1;
|
|---|
| 864 | free (collapsed);
|
|---|
| 865 | /* Don't need xrealloc: we don't need to preserve the content. */
|
|---|
| 866 | collapsed = xmalloc (collapsed_length);
|
|---|
| 867 | }
|
|---|
| 868 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 869 | strcpy (collapsed, line);
|
|---|
| 870 | /* Collapse continuation lines. */
|
|---|
| 871 | collapse_continuations (collapsed);
|
|---|
| 872 | remove_comments (collapsed);
|
|---|
| 873 | #else
|
|---|
| 874 | memcpy (collapsed, line, linelen + 1);
|
|---|
| 875 | /* Collapse continuation lines. */
|
|---|
| 876 | eol = collapse_continuations (collapsed, linelen);
|
|---|
| 877 | assert (strchr (collapsed, '\0') == eol);
|
|---|
| 878 | eol = remove_comments (collapsed, eol);
|
|---|
| 879 | assert (strchr (collapsed, '\0') == eol);
|
|---|
| 880 | #endif
|
|---|
| 881 |
|
|---|
| 882 | /* Get rid if starting space (including formfeed, vtab, etc.) */
|
|---|
| 883 | p = collapsed;
|
|---|
| 884 | NEXT_TOKEN (p);
|
|---|
| 885 |
|
|---|
| 886 | /* See if this is a variable assignment. We need to do this early, to
|
|---|
| 887 | allow variables with names like 'ifdef', 'export', 'private', etc. */
|
|---|
| 888 | p = parse_var_assignment (p, &vmod);
|
|---|
| 889 | if (vmod.assign_v)
|
|---|
| 890 | {
|
|---|
| 891 | struct variable *v;
|
|---|
| 892 | enum variable_origin origin = vmod.override_v ? o_override : o_file;
|
|---|
| 893 |
|
|---|
| 894 | /* If we're ignoring then we're done now. */
|
|---|
| 895 | if (ignoring)
|
|---|
| 896 | {
|
|---|
| 897 | if (vmod.define_v)
|
|---|
| 898 | in_ignored_define = 1;
|
|---|
| 899 | continue;
|
|---|
| 900 | }
|
|---|
| 901 |
|
|---|
| 902 | /* Variable assignment ends the previous rule. */
|
|---|
| 903 | record_waiting_files ();
|
|---|
| 904 |
|
|---|
| 905 | if (vmod.undefine_v)
|
|---|
| 906 | {
|
|---|
| 907 | do_undefine (p, origin, ebuf);
|
|---|
| 908 | continue;
|
|---|
| 909 | }
|
|---|
| 910 | else if (vmod.define_v)
|
|---|
| 911 | v = do_define (p IF_WITH_VALUE_LENGTH_PARAM(NULL), origin, ebuf);
|
|---|
| 912 | else
|
|---|
| 913 | v = try_variable_definition (fstart, p IF_WITH_VALUE_LENGTH_PARAM(NULL), origin, 0);
|
|---|
| 914 |
|
|---|
| 915 | assert (v != NULL);
|
|---|
| 916 |
|
|---|
| 917 | if (vmod.export_v)
|
|---|
| 918 | v->export = v_export;
|
|---|
| 919 | if (vmod.private_v)
|
|---|
| 920 | v->private_var = 1;
|
|---|
| 921 |
|
|---|
| 922 | /* This line has been dealt with. */
|
|---|
| 923 | continue;
|
|---|
| 924 | }
|
|---|
| 925 |
|
|---|
| 926 | /* If this line is completely empty, ignore it. */
|
|---|
| 927 | if (*p == '\0')
|
|---|
| 928 | continue;
|
|---|
| 929 |
|
|---|
| 930 | p2 = end_of_token (p);
|
|---|
| 931 | wlen = p2 - p;
|
|---|
| 932 | NEXT_TOKEN (p2);
|
|---|
| 933 |
|
|---|
| 934 | /* If we're in an ignored define, skip this line (but maybe get out). */
|
|---|
| 935 | if (in_ignored_define)
|
|---|
| 936 | {
|
|---|
| 937 | /* See if this is an endef line (plus optional comment). */
|
|---|
| 938 | if (word1eq ("endef") && STOP_SET (*p2, MAP_COMMENT|MAP_NUL))
|
|---|
| 939 | in_ignored_define = 0;
|
|---|
| 940 |
|
|---|
| 941 | continue;
|
|---|
| 942 | }
|
|---|
| 943 |
|
|---|
| 944 | /* Check for conditional state changes. */
|
|---|
| 945 | {
|
|---|
| 946 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 947 | int i = conditional_line (p, wlen, fstart);
|
|---|
| 948 | #else
|
|---|
| 949 | int i = conditional_line (p, eol, wlen, fstart);
|
|---|
| 950 | #endif
|
|---|
| 951 | if (i != -2)
|
|---|
| 952 | {
|
|---|
| 953 | if (i == -1)
|
|---|
| 954 | O (fatal, fstart, _("invalid syntax in conditional"));
|
|---|
| 955 |
|
|---|
| 956 | ignoring = i;
|
|---|
| 957 | continue;
|
|---|
| 958 | }
|
|---|
| 959 | }
|
|---|
| 960 |
|
|---|
| 961 | /* Nothing to see here... move along. */
|
|---|
| 962 | if (ignoring)
|
|---|
| 963 | continue;
|
|---|
| 964 |
|
|---|
| 965 | #ifdef CONFIG_WITH_LOCAL_VARIABLES
|
|---|
| 966 | if (word1eq ("local"))
|
|---|
| 967 | {
|
|---|
| 968 | if (*p2 == '\0')
|
|---|
| 969 | O (error, fstart, _("empty `local' directive"));
|
|---|
| 970 |
|
|---|
| 971 | if (strneq (p2, "define", 6)
|
|---|
| 972 | && (ISBLANK (p2[6]) || p2[6] == '\0'))
|
|---|
| 973 | {
|
|---|
| 974 | if (ignoring)
|
|---|
| 975 | in_ignored_define = 1;
|
|---|
| 976 | else
|
|---|
| 977 | {
|
|---|
| 978 | p2 = next_token (p2 + 6);
|
|---|
| 979 | if (*p2 == '\0')
|
|---|
| 980 | O (fatal, fstart, _("empty variable name"));
|
|---|
| 981 |
|
|---|
| 982 | /* Let the variable name be the whole rest of the line,
|
|---|
| 983 | with trailing blanks stripped (comments have already been
|
|---|
| 984 | removed), so it could be a complex variable/function
|
|---|
| 985 | reference that might contain blanks. */
|
|---|
| 986 | p = strchr (p2, '\0');
|
|---|
| 987 | while (ISBLANK (p[-1]))
|
|---|
| 988 | --p;
|
|---|
| 989 | do_define (p2 IF_WITH_VALUE_LENGTH_PARAM(p), o_local, ebuf);
|
|---|
| 990 | }
|
|---|
| 991 | }
|
|---|
| 992 | else if (!ignoring
|
|---|
| 993 | && !try_variable_definition (fstart, p2 IF_WITH_VALUE_LENGTH_PARAM(eol), o_local, 0))
|
|---|
| 994 | O (error, fstart, _("invalid `local' directive"));
|
|---|
| 995 |
|
|---|
| 996 | continue;
|
|---|
| 997 | }
|
|---|
| 998 | #endif /* CONFIG_WITH_LOCAL_VARIABLES */
|
|---|
| 999 |
|
|---|
| 1000 | #ifdef KMK
|
|---|
| 1001 | /* Check for the kBuild language extensions. */
|
|---|
| 1002 | if ( wlen > sizeof("kBuild-")
|
|---|
| 1003 | && strneq (p, "kBuild-", sizeof("kBuild-") - 1))
|
|---|
| 1004 | {
|
|---|
| 1005 | krc = eval_kbuild_read_hook (&kdata, fstart, p, wlen, p2, eol, ignoring);
|
|---|
| 1006 | if (krc != 42)
|
|---|
| 1007 | {
|
|---|
| 1008 | if (krc != 0)
|
|---|
| 1009 | ON (error, fstart, _("krc=%d"), krc);
|
|---|
| 1010 | continue;
|
|---|
| 1011 | }
|
|---|
| 1012 | }
|
|---|
| 1013 | #endif /* KMK */
|
|---|
| 1014 |
|
|---|
| 1015 | /* Manage the "export" keyword used outside of variable assignment
|
|---|
| 1016 | as well as "unexport". */
|
|---|
| 1017 | if (word1eq ("export") || word1eq ("unexport"))
|
|---|
| 1018 | {
|
|---|
| 1019 | int exporting = *p == 'u' ? 0 : 1;
|
|---|
| 1020 |
|
|---|
| 1021 | /* Export/unexport ends the previous rule. */
|
|---|
| 1022 | record_waiting_files ();
|
|---|
| 1023 |
|
|---|
| 1024 | /* (un)export by itself causes everything to be (un)exported. */
|
|---|
| 1025 | if (*p2 == '\0')
|
|---|
| 1026 | export_all_variables = exporting;
|
|---|
| 1027 | else
|
|---|
| 1028 | {
|
|---|
| 1029 | unsigned int l;
|
|---|
| 1030 | const char *cp;
|
|---|
| 1031 | char *ap;
|
|---|
| 1032 |
|
|---|
| 1033 | /* Expand the line so we can use indirect and constructed
|
|---|
| 1034 | variable names in an (un)export command. */
|
|---|
| 1035 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1036 | cp = ap = allocated_variable_expand (p2);
|
|---|
| 1037 | #else
|
|---|
| 1038 | unsigned int buf_len;
|
|---|
| 1039 | cp = ap = allocated_variable_expand_3 (p2, eol - p2, NULL, &buf_len);
|
|---|
| 1040 | #endif
|
|---|
| 1041 |
|
|---|
| 1042 | for (p = find_next_token (&cp, &l); p != 0;
|
|---|
| 1043 | p = find_next_token (&cp, &l))
|
|---|
| 1044 | {
|
|---|
| 1045 | struct variable *v = lookup_variable (p, l);
|
|---|
| 1046 | if (v == 0)
|
|---|
| 1047 | v = define_variable_global (p, l, "", o_file, 0, fstart);
|
|---|
| 1048 | v->export = exporting ? v_export : v_noexport;
|
|---|
| 1049 | }
|
|---|
| 1050 |
|
|---|
| 1051 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1052 | free (ap);
|
|---|
| 1053 | #else
|
|---|
| 1054 | recycle_variable_buffer (ap, buf_len);
|
|---|
| 1055 | #endif
|
|---|
| 1056 | }
|
|---|
| 1057 | continue;
|
|---|
| 1058 | }
|
|---|
| 1059 |
|
|---|
| 1060 | /* Handle the special syntax for vpath. */
|
|---|
| 1061 | if (word1eq ("vpath"))
|
|---|
| 1062 | {
|
|---|
| 1063 | const char *cp;
|
|---|
| 1064 | char *vpat;
|
|---|
| 1065 | unsigned int l;
|
|---|
| 1066 |
|
|---|
| 1067 | /* vpath ends the previous rule. */
|
|---|
| 1068 | record_waiting_files ();
|
|---|
| 1069 |
|
|---|
| 1070 | cp = variable_expand (p2);
|
|---|
| 1071 | p = find_next_token (&cp, &l);
|
|---|
| 1072 | if (p != 0)
|
|---|
| 1073 | {
|
|---|
| 1074 | vpat = xstrndup (p, l);
|
|---|
| 1075 | p = find_next_token (&cp, &l);
|
|---|
| 1076 | /* No searchpath means remove all previous
|
|---|
| 1077 | selective VPATH's with the same pattern. */
|
|---|
| 1078 | }
|
|---|
| 1079 | else
|
|---|
| 1080 | /* No pattern means remove all previous selective VPATH's. */
|
|---|
| 1081 | vpat = 0;
|
|---|
| 1082 | construct_vpath_list (vpat, p);
|
|---|
| 1083 | free (vpat);
|
|---|
| 1084 |
|
|---|
| 1085 | continue;
|
|---|
| 1086 | }
|
|---|
| 1087 |
|
|---|
| 1088 | #ifdef CONFIG_WITH_INCLUDEDEP
|
|---|
| 1089 | assert (strchr (p2, '\0') == eol);
|
|---|
| 1090 | if (word1eq ("includedep") || word1eq ("includedep-queue") || word1eq ("includedep-flush"))
|
|---|
| 1091 | {
|
|---|
| 1092 | /* We have found an `includedep' line specifying one or more dep files
|
|---|
| 1093 | to be read at this point. This include variation does no
|
|---|
| 1094 | globbing and do not support multiple names. It's trying to save
|
|---|
| 1095 | time by being dead simple as well as ignoring errors. */
|
|---|
| 1096 | enum incdep_op op = p[wlen - 1] == 'p'
|
|---|
| 1097 | ? incdep_read_it
|
|---|
| 1098 | : p[wlen - 1] == 'e'
|
|---|
| 1099 | ? incdep_queue : incdep_flush;
|
|---|
| 1100 | char *free_me = NULL;
|
|---|
| 1101 | unsigned int buf_len;
|
|---|
| 1102 | char *name = p2;
|
|---|
| 1103 |
|
|---|
| 1104 | if (memchr (name, '$', eol - name))
|
|---|
| 1105 | {
|
|---|
| 1106 | unsigned int name_len;
|
|---|
| 1107 | free_me = name = allocated_variable_expand_3 (name, eol - name, &name_len, &buf_len);
|
|---|
| 1108 | eol = name + name_len;
|
|---|
| 1109 | while (ISSPACE (*name))
|
|---|
| 1110 | ++name;
|
|---|
| 1111 | }
|
|---|
| 1112 |
|
|---|
| 1113 | while (eol > name && ISSPACE (eol[-1]))
|
|---|
| 1114 | --eol;
|
|---|
| 1115 |
|
|---|
| 1116 | *eol = '\0';
|
|---|
| 1117 | eval_include_dep (name, fstart, op);
|
|---|
| 1118 |
|
|---|
| 1119 | if (free_me)
|
|---|
| 1120 | recycle_variable_buffer (free_me, buf_len);
|
|---|
| 1121 | continue;
|
|---|
| 1122 | }
|
|---|
| 1123 | #endif /* CONFIG_WITH_INCLUDEDEP */
|
|---|
| 1124 |
|
|---|
| 1125 | /* Handle include and variants. */
|
|---|
| 1126 | if (word1eq ("include") || word1eq ("-include") || word1eq ("sinclude"))
|
|---|
| 1127 | {
|
|---|
| 1128 | /* We have found an 'include' line specifying a nested
|
|---|
| 1129 | makefile to be read at this point. */
|
|---|
| 1130 | struct conditionals *save;
|
|---|
| 1131 | struct conditionals new_conditionals;
|
|---|
| 1132 | struct nameseq *files;
|
|---|
| 1133 | /* "-include" (vs "include") says no error if the file does not
|
|---|
| 1134 | exist. "sinclude" is an alias for this from SGI. */
|
|---|
| 1135 | int noerror = (p[0] != 'i');
|
|---|
| 1136 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1137 | unsigned int buf_len;
|
|---|
| 1138 | #endif
|
|---|
| 1139 |
|
|---|
| 1140 | /* Include ends the previous rule. */
|
|---|
| 1141 | record_waiting_files ();
|
|---|
| 1142 |
|
|---|
| 1143 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1144 | p = allocated_variable_expand (p2);
|
|---|
| 1145 | #else
|
|---|
| 1146 | p = allocated_variable_expand_3 (p2, eol - p2, NULL, &buf_len);
|
|---|
| 1147 | #endif
|
|---|
| 1148 |
|
|---|
| 1149 |
|
|---|
| 1150 | /* If no filenames, it's a no-op. */
|
|---|
| 1151 | if (*p == '\0')
|
|---|
| 1152 | {
|
|---|
| 1153 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1154 | free (p);
|
|---|
| 1155 | #else
|
|---|
| 1156 | recycle_variable_buffer (p, buf_len);
|
|---|
| 1157 | #endif
|
|---|
| 1158 | continue;
|
|---|
| 1159 | }
|
|---|
| 1160 |
|
|---|
| 1161 | /* Parse the list of file names. Don't expand archive references! */
|
|---|
| 1162 | p2 = p;
|
|---|
| 1163 | files = PARSE_FILE_SEQ (&p2, struct nameseq, MAP_NUL, NULL,
|
|---|
| 1164 | PARSEFS_NOAR);
|
|---|
| 1165 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1166 | free (p);
|
|---|
| 1167 | #else
|
|---|
| 1168 | recycle_variable_buffer (p, buf_len);
|
|---|
| 1169 | #endif
|
|---|
| 1170 |
|
|---|
| 1171 | /* Save the state of conditionals and start
|
|---|
| 1172 | the included makefile with a clean slate. */
|
|---|
| 1173 | save = install_conditionals (&new_conditionals);
|
|---|
| 1174 |
|
|---|
| 1175 | /* Record the rules that are waiting so they will determine
|
|---|
| 1176 | the default goal before those in the included makefile. */
|
|---|
| 1177 | record_waiting_files ();
|
|---|
| 1178 |
|
|---|
| 1179 | /* Read each included makefile. */
|
|---|
| 1180 | while (files != 0)
|
|---|
| 1181 | {
|
|---|
| 1182 | struct nameseq *next = files->next;
|
|---|
| 1183 | int flags = (RM_INCLUDED | RM_NO_TILDE
|
|---|
| 1184 | | (noerror ? RM_DONTCARE : 0)
|
|---|
| 1185 | | (set_default ? 0 : RM_NO_DEFAULT_GOAL));
|
|---|
| 1186 |
|
|---|
| 1187 | struct goaldep *d = eval_makefile (files->name, flags);
|
|---|
| 1188 |
|
|---|
| 1189 | if (errno)
|
|---|
| 1190 | {
|
|---|
| 1191 | d->error = (unsigned short)errno;
|
|---|
| 1192 | d->floc = *fstart;
|
|---|
| 1193 | }
|
|---|
| 1194 |
|
|---|
| 1195 | free_ns (files);
|
|---|
| 1196 | files = next;
|
|---|
| 1197 | }
|
|---|
| 1198 |
|
|---|
| 1199 | /* Restore conditional state. */
|
|---|
| 1200 | restore_conditionals (save);
|
|---|
| 1201 |
|
|---|
| 1202 | continue;
|
|---|
| 1203 | }
|
|---|
| 1204 |
|
|---|
| 1205 | /* Handle the load operations. */
|
|---|
| 1206 | if (word1eq ("load") || word1eq ("-load"))
|
|---|
| 1207 | {
|
|---|
| 1208 | /* A 'load' line specifies a dynamic object to load. */
|
|---|
| 1209 | struct nameseq *files;
|
|---|
| 1210 | int noerror = (p[0] == '-');
|
|---|
| 1211 |
|
|---|
| 1212 | /* Load ends the previous rule. */
|
|---|
| 1213 | record_waiting_files ();
|
|---|
| 1214 |
|
|---|
| 1215 | p = allocated_variable_expand (p2);
|
|---|
| 1216 |
|
|---|
| 1217 | /* If no filenames, it's a no-op. */
|
|---|
| 1218 | if (*p == '\0')
|
|---|
| 1219 | {
|
|---|
| 1220 | free (p);
|
|---|
| 1221 | continue;
|
|---|
| 1222 | }
|
|---|
| 1223 |
|
|---|
| 1224 | /* Parse the list of file names.
|
|---|
| 1225 | Don't expand archive references or strip "./" */
|
|---|
| 1226 | p2 = p;
|
|---|
| 1227 | files = PARSE_FILE_SEQ (&p2, struct nameseq, MAP_NUL, NULL,
|
|---|
| 1228 | PARSEFS_NOAR);
|
|---|
| 1229 | free (p);
|
|---|
| 1230 |
|
|---|
| 1231 | /* Load each file. */
|
|---|
| 1232 | while (files != 0)
|
|---|
| 1233 | {
|
|---|
| 1234 | struct nameseq *next = files->next;
|
|---|
| 1235 | const char *name = files->name;
|
|---|
| 1236 | struct goaldep *deps;
|
|---|
| 1237 | int r;
|
|---|
| 1238 |
|
|---|
| 1239 | /* Load the file. 0 means failure. */
|
|---|
| 1240 | r = load_file (&ebuf->floc, &name, noerror);
|
|---|
| 1241 | if (! r && ! noerror)
|
|---|
| 1242 | OS (fatal, &ebuf->floc, _("%s: failed to load"), name);
|
|---|
| 1243 |
|
|---|
| 1244 | free_ns (files);
|
|---|
| 1245 | files = next;
|
|---|
| 1246 |
|
|---|
| 1247 | /* Return of -1 means a special load: don't rebuild it. */
|
|---|
| 1248 | if (r == -1)
|
|---|
| 1249 | continue;
|
|---|
| 1250 |
|
|---|
| 1251 | /* It succeeded, so add it to the list "to be rebuilt". */
|
|---|
| 1252 | deps = alloc_goaldep ();
|
|---|
| 1253 | deps->next = read_files;
|
|---|
| 1254 | read_files = deps;
|
|---|
| 1255 | deps->file = lookup_file (name);
|
|---|
| 1256 | if (deps->file == 0)
|
|---|
| 1257 | deps->file = enter_file (name);
|
|---|
| 1258 | deps->file->loaded = 1;
|
|---|
| 1259 | }
|
|---|
| 1260 |
|
|---|
| 1261 | continue;
|
|---|
| 1262 | }
|
|---|
| 1263 |
|
|---|
| 1264 | /* This line starts with a tab but was not caught above because there
|
|---|
| 1265 | was no preceding target, and the line might have been usable as a
|
|---|
| 1266 | variable definition. But now we know it is definitely lossage. */
|
|---|
| 1267 | if (line[0] == cmd_prefix)
|
|---|
| 1268 | O (fatal, fstart, _("recipe commences before first target"));
|
|---|
| 1269 |
|
|---|
| 1270 | /* This line describes some target files. This is complicated by
|
|---|
| 1271 | the existence of target-specific variables, because we can't
|
|---|
| 1272 | expand the entire line until we know if we have one or not. So
|
|---|
| 1273 | we expand the line word by word until we find the first ':',
|
|---|
| 1274 | then check to see if it's a target-specific variable.
|
|---|
| 1275 |
|
|---|
| 1276 | In this algorithm, 'lb_next' will point to the beginning of the
|
|---|
| 1277 | unexpanded parts of the input buffer, while 'p2' points to the
|
|---|
| 1278 | parts of the expanded buffer we haven't searched yet. */
|
|---|
| 1279 |
|
|---|
| 1280 | {
|
|---|
| 1281 | enum make_word_type wtype;
|
|---|
| 1282 | char *cmdleft, *semip, *lb_next;
|
|---|
| 1283 | unsigned int plen = 0;
|
|---|
| 1284 | char *colonp;
|
|---|
| 1285 | const char *end, *beg; /* Helpers for whitespace stripping. */
|
|---|
| 1286 |
|
|---|
| 1287 | /* Record the previous rule. */
|
|---|
| 1288 |
|
|---|
| 1289 | record_waiting_files ();
|
|---|
| 1290 | tgts_started = fstart->lineno;
|
|---|
| 1291 |
|
|---|
| 1292 | /* Search the line for an unquoted ; that is not after an
|
|---|
| 1293 | unquoted #. */
|
|---|
| 1294 | cmdleft = find_char_unquote (line, MAP_SEMI|MAP_COMMENT|MAP_VARIABLE IF_WITH_VALUE_LENGTH_PARAM(ebuf->eol - line));
|
|---|
| 1295 | if (cmdleft != 0 && *cmdleft == '#')
|
|---|
| 1296 | {
|
|---|
| 1297 | /* We found a comment before a semicolon. */
|
|---|
| 1298 | *cmdleft = '\0';
|
|---|
| 1299 | cmdleft = 0;
|
|---|
| 1300 | }
|
|---|
| 1301 | else if (cmdleft != 0)
|
|---|
| 1302 | /* Found one. Cut the line short there before expanding it. */
|
|---|
| 1303 | *(cmdleft++) = '\0';
|
|---|
| 1304 | semip = cmdleft;
|
|---|
| 1305 |
|
|---|
| 1306 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1307 | collapse_continuations (line);
|
|---|
| 1308 | #else
|
|---|
| 1309 | collapse_continuations (line, strlen (line)); /**@todo fix this */
|
|---|
| 1310 | #endif
|
|---|
| 1311 |
|
|---|
| 1312 | /* We can't expand the entire line, since if it's a per-target
|
|---|
| 1313 | variable we don't want to expand it. So, walk from the
|
|---|
| 1314 | beginning, expanding as we go, and looking for "interesting"
|
|---|
| 1315 | chars. The first word is always expandable. */
|
|---|
| 1316 | wtype = get_next_mword (line, NULL, &lb_next, &wlen);
|
|---|
| 1317 | switch (wtype)
|
|---|
| 1318 | {
|
|---|
| 1319 | case w_eol:
|
|---|
| 1320 | if (cmdleft != 0)
|
|---|
| 1321 | O (fatal, fstart, _("missing rule before recipe"));
|
|---|
| 1322 | /* This line contained something but turned out to be nothing
|
|---|
| 1323 | but whitespace (a comment?). */
|
|---|
| 1324 | continue;
|
|---|
| 1325 |
|
|---|
| 1326 | case w_colon:
|
|---|
| 1327 | case w_dcolon:
|
|---|
| 1328 | /* We accept and ignore rules without targets for
|
|---|
| 1329 | compatibility with SunOS 4 make. */
|
|---|
| 1330 | no_targets = 1;
|
|---|
| 1331 | continue;
|
|---|
| 1332 |
|
|---|
| 1333 | default:
|
|---|
| 1334 | break;
|
|---|
| 1335 | }
|
|---|
| 1336 |
|
|---|
| 1337 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1338 | p2 = variable_expand_string (NULL, lb_next, wlen);
|
|---|
| 1339 | #else
|
|---|
| 1340 | p2 = variable_expand_string_2 (NULL, lb_next, wlen, &eol);
|
|---|
| 1341 | assert (strchr (p2, '\0') == eol);
|
|---|
| 1342 | #endif
|
|---|
| 1343 |
|
|---|
| 1344 | while (1)
|
|---|
| 1345 | {
|
|---|
| 1346 | lb_next += wlen;
|
|---|
| 1347 | if (cmdleft == 0)
|
|---|
| 1348 | {
|
|---|
| 1349 | /* Look for a semicolon in the expanded line. */
|
|---|
| 1350 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1351 | cmdleft = find_char_unquote (p2, MAP_SEMI);
|
|---|
| 1352 | #else
|
|---|
| 1353 | cmdleft = find_char_unquote_0 (p2, ';', MAP_SEMI, &eol);
|
|---|
| 1354 | #endif
|
|---|
| 1355 |
|
|---|
| 1356 | if (cmdleft != 0)
|
|---|
| 1357 | {
|
|---|
| 1358 | unsigned long p2_off = p2 - variable_buffer;
|
|---|
| 1359 | unsigned long cmd_off = cmdleft - variable_buffer;
|
|---|
| 1360 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1361 | char *pend = p2 + strlen (p2);
|
|---|
| 1362 | #endif
|
|---|
| 1363 |
|
|---|
| 1364 | /* Append any remnants of lb, then cut the line short
|
|---|
| 1365 | at the semicolon. */
|
|---|
| 1366 | *cmdleft = '\0';
|
|---|
| 1367 |
|
|---|
| 1368 | /* One school of thought says that you shouldn't expand
|
|---|
| 1369 | here, but merely copy, since now you're beyond a ";"
|
|---|
| 1370 | and into a command script. However, the old parser
|
|---|
| 1371 | expanded the whole line, so we continue that for
|
|---|
| 1372 | backwards-compatibility. Also, it wouldn't be
|
|---|
| 1373 | entirely consistent, since we do an unconditional
|
|---|
| 1374 | expand below once we know we don't have a
|
|---|
| 1375 | target-specific variable. */
|
|---|
| 1376 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1377 | (void)variable_expand_string (pend, lb_next, (long)-1);
|
|---|
| 1378 | lb_next += strlen (lb_next);
|
|---|
| 1379 | #else
|
|---|
| 1380 | tmp_len = strlen (lb_next);
|
|---|
| 1381 | variable_expand_string_2 (eol, lb_next, tmp_len, &eol);
|
|---|
| 1382 | lb_next += tmp_len;
|
|---|
| 1383 | #endif
|
|---|
| 1384 | p2 = variable_buffer + p2_off;
|
|---|
| 1385 | cmdleft = variable_buffer + cmd_off + 1;
|
|---|
| 1386 | }
|
|---|
| 1387 | }
|
|---|
| 1388 |
|
|---|
| 1389 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1390 | colonp = find_char_unquote (p2, MAP_COLON);
|
|---|
| 1391 | #else
|
|---|
| 1392 | colonp = find_char_unquote_0 (p2, ':', MAP_COLON, &eol);
|
|---|
| 1393 | #endif
|
|---|
| 1394 | #ifdef HAVE_DOS_PATHS
|
|---|
| 1395 | /* The drive spec brain-damage strikes again... */
|
|---|
| 1396 | /* Note that the only separators of targets in this context
|
|---|
| 1397 | are whitespace and a left paren. If others are possible,
|
|---|
| 1398 | they should be added to the string in the call to index. */
|
|---|
| 1399 | while (colonp && (colonp[1] == '/' || colonp[1] == '\\') &&
|
|---|
| 1400 | colonp > p2 && isalpha ((unsigned char)colonp[-1]) &&
|
|---|
| 1401 | (colonp == p2 + 1 || strchr (" \t(", colonp[-2]) != 0))
|
|---|
| 1402 | # ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1403 | colonp = find_char_unquote (colonp + 1, MAP_COLON);
|
|---|
| 1404 | # else
|
|---|
| 1405 | colonp = find_char_unquote_0 (colonp + 1, ':', MAP_COLON, &eol);
|
|---|
| 1406 | # endif
|
|---|
| 1407 | #endif
|
|---|
| 1408 | if (colonp != 0)
|
|---|
| 1409 | break;
|
|---|
| 1410 |
|
|---|
| 1411 | wtype = get_next_mword (lb_next, NULL, &lb_next, &wlen);
|
|---|
| 1412 | if (wtype == w_eol)
|
|---|
| 1413 | break;
|
|---|
| 1414 |
|
|---|
| 1415 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1416 | p2 += strlen (p2);
|
|---|
| 1417 | *(p2++) = ' ';
|
|---|
| 1418 | p2 = variable_expand_string (p2, lb_next, wlen);
|
|---|
| 1419 | #else
|
|---|
| 1420 | *(eol++) = ' ';
|
|---|
| 1421 | p2 = variable_expand_string_2 (eol, lb_next, wlen, &eol);
|
|---|
| 1422 | #endif
|
|---|
| 1423 | /* We don't need to worry about cmdleft here, because if it was
|
|---|
| 1424 | found in the variable_buffer the entire buffer has already
|
|---|
| 1425 | been expanded... we'll never get here. */
|
|---|
| 1426 | }
|
|---|
| 1427 |
|
|---|
| 1428 | p2 = next_token (variable_buffer);
|
|---|
| 1429 |
|
|---|
| 1430 | /* If the word we're looking at is EOL, see if there's _anything_
|
|---|
| 1431 | on the line. If not, a variable expanded to nothing, so ignore
|
|---|
| 1432 | it. If so, we can't parse this line so punt. */
|
|---|
| 1433 | if (wtype == w_eol)
|
|---|
| 1434 | {
|
|---|
| 1435 | if (*p2 == '\0')
|
|---|
| 1436 | continue;
|
|---|
| 1437 |
|
|---|
| 1438 | /* There's no need to be ivory-tower about this: check for
|
|---|
| 1439 | one of the most common bugs found in makefiles... */
|
|---|
| 1440 | if (cmd_prefix == '\t' && strneq (line, " ", 8))
|
|---|
| 1441 | O (fatal, fstart, _("missing separator (did you mean TAB instead of 8 spaces?)"));
|
|---|
| 1442 | else
|
|---|
| 1443 | O (fatal, fstart, _("missing separator"));
|
|---|
| 1444 | }
|
|---|
| 1445 |
|
|---|
| 1446 | /* Make the colon the end-of-string so we know where to stop
|
|---|
| 1447 | looking for targets. Start there again once we're done. */
|
|---|
| 1448 | *colonp = '\0';
|
|---|
| 1449 | filenames = PARSE_SIMPLE_SEQ (&p2, struct nameseq);
|
|---|
| 1450 | *colonp = ':';
|
|---|
| 1451 | p2 = colonp;
|
|---|
| 1452 |
|
|---|
| 1453 | if (!filenames)
|
|---|
| 1454 | {
|
|---|
| 1455 | /* We accept and ignore rules without targets for
|
|---|
| 1456 | compatibility with SunOS 4 make. */
|
|---|
| 1457 | no_targets = 1;
|
|---|
| 1458 | continue;
|
|---|
| 1459 | }
|
|---|
| 1460 | /* This should never be possible; we handled it above. */
|
|---|
| 1461 | assert (*p2 != '\0');
|
|---|
| 1462 | ++p2;
|
|---|
| 1463 |
|
|---|
| 1464 | /* Is this a one-colon or two-colon entry? */
|
|---|
| 1465 | two_colon = *p2 == ':';
|
|---|
| 1466 | if (two_colon)
|
|---|
| 1467 | p2++;
|
|---|
| 1468 |
|
|---|
| 1469 | /* Test to see if it's a target-specific variable. Copy the rest
|
|---|
| 1470 | of the buffer over, possibly temporarily (we'll expand it later
|
|---|
| 1471 | if it's not a target-specific variable). PLEN saves the length
|
|---|
| 1472 | of the unparsed section of p2, for later. */
|
|---|
| 1473 | if (*lb_next != '\0')
|
|---|
| 1474 | {
|
|---|
| 1475 | unsigned int l = p2 - variable_buffer;
|
|---|
| 1476 | plen = strlen (p2);
|
|---|
| 1477 | variable_buffer_output (p2+plen, lb_next, strlen (lb_next)+1);
|
|---|
| 1478 | p2 = variable_buffer + l;
|
|---|
| 1479 | }
|
|---|
| 1480 |
|
|---|
| 1481 | p2 = parse_var_assignment (p2, &vmod);
|
|---|
| 1482 | if (vmod.assign_v)
|
|---|
| 1483 | {
|
|---|
| 1484 | /* If there was a semicolon found, add it back, plus anything
|
|---|
| 1485 | after it. */
|
|---|
| 1486 | if (semip)
|
|---|
| 1487 | {
|
|---|
| 1488 | unsigned int l = p2 - variable_buffer;
|
|---|
| 1489 | *(--semip) = ';';
|
|---|
| 1490 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1491 | collapse_continuations (semip);
|
|---|
| 1492 | #else
|
|---|
| 1493 | collapse_continuations (semip, strlen(semip)); /** @todo fix this */
|
|---|
| 1494 | #endif
|
|---|
| 1495 | variable_buffer_output (p2 + strlen (p2),
|
|---|
| 1496 | semip, strlen (semip)+1);
|
|---|
| 1497 | p2 = variable_buffer + l;
|
|---|
| 1498 | }
|
|---|
| 1499 | record_target_var (filenames, p2,
|
|---|
| 1500 | vmod.override_v ? o_override : o_file,
|
|---|
| 1501 | &vmod, fstart);
|
|---|
| 1502 | filenames = 0;
|
|---|
| 1503 | continue;
|
|---|
| 1504 | }
|
|---|
| 1505 |
|
|---|
| 1506 | /* This is a normal target, _not_ a target-specific variable.
|
|---|
| 1507 | Unquote any = in the dependency list. */
|
|---|
| 1508 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1509 | find_char_unquote (lb_next, MAP_EQUALS);
|
|---|
| 1510 | #else
|
|---|
| 1511 | {
|
|---|
| 1512 | char *tmp_eos = strchr(lb_next, '\0'); /** @todo see if we can optimize this away... */
|
|---|
| 1513 | find_char_unquote_0 (lb_next, '=', MAP_EQUALS, &tmp_eos);
|
|---|
| 1514 | }
|
|---|
| 1515 | #endif
|
|---|
| 1516 |
|
|---|
| 1517 | /* Remember the command prefix for this target. */
|
|---|
| 1518 | prefix = cmd_prefix;
|
|---|
| 1519 |
|
|---|
| 1520 | /* We have some targets, so don't ignore the following commands. */
|
|---|
| 1521 | no_targets = 0;
|
|---|
| 1522 |
|
|---|
| 1523 | /* Expand the dependencies, etc. */
|
|---|
| 1524 | if (*lb_next != '\0')
|
|---|
| 1525 | {
|
|---|
| 1526 | unsigned int l = p2 - variable_buffer;
|
|---|
| 1527 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1528 | (void) variable_expand_string (p2 + plen, lb_next, (long)-1);
|
|---|
| 1529 | #else
|
|---|
| 1530 | char *eos;
|
|---|
| 1531 | (void) variable_expand_string_2 (p2 + plen, lb_next, (long)-1, &eos);
|
|---|
| 1532 | #endif
|
|---|
| 1533 | p2 = variable_buffer + l;
|
|---|
| 1534 |
|
|---|
| 1535 | /* Look for a semicolon in the expanded line. */
|
|---|
| 1536 | if (cmdleft == 0)
|
|---|
| 1537 | {
|
|---|
| 1538 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1539 | cmdleft = find_char_unquote (p2, MAP_SEMI);
|
|---|
| 1540 | #else
|
|---|
| 1541 | cmdleft = find_char_unquote_0 (p2, ';', MAP_SEMI, &eos);
|
|---|
| 1542 | #endif
|
|---|
| 1543 | if (cmdleft != 0)
|
|---|
| 1544 | *(cmdleft++) = '\0';
|
|---|
| 1545 | }
|
|---|
| 1546 | }
|
|---|
| 1547 |
|
|---|
| 1548 | /* Is this a static pattern rule: 'target: %targ: %dep; ...'? */
|
|---|
| 1549 | p = strchr (p2, ':');
|
|---|
| 1550 | while (p != 0 && p[-1] == '\\')
|
|---|
| 1551 | {
|
|---|
| 1552 | char *q = &p[-1];
|
|---|
| 1553 | int backslash = 0;
|
|---|
| 1554 | while (*q-- == '\\')
|
|---|
| 1555 | backslash = !backslash;
|
|---|
| 1556 | if (backslash)
|
|---|
| 1557 | p = strchr (p + 1, ':');
|
|---|
| 1558 | else
|
|---|
| 1559 | break;
|
|---|
| 1560 | }
|
|---|
| 1561 | #ifdef _AMIGA
|
|---|
| 1562 | /* Here, the situation is quite complicated. Let's have a look
|
|---|
| 1563 | at a couple of targets:
|
|---|
| 1564 |
|
|---|
| 1565 | install: dev:make
|
|---|
| 1566 |
|
|---|
| 1567 | dev:make: make
|
|---|
| 1568 |
|
|---|
| 1569 | dev:make:: xyz
|
|---|
| 1570 |
|
|---|
| 1571 | The rule is that it's only a target, if there are TWO :'s
|
|---|
| 1572 | OR a space around the :.
|
|---|
| 1573 | */
|
|---|
| 1574 | if (p && !(ISSPACE (p[1]) || !p[1] || ISSPACE (p[-1])))
|
|---|
| 1575 | p = 0;
|
|---|
| 1576 | #endif
|
|---|
| 1577 | #ifdef HAVE_DOS_PATHS
|
|---|
| 1578 | {
|
|---|
| 1579 | int check_again;
|
|---|
| 1580 | do {
|
|---|
| 1581 | check_again = 0;
|
|---|
| 1582 | /* For DOS-style paths, skip a "C:\..." or a "C:/..." */
|
|---|
| 1583 | if (p != 0 && (p[1] == '\\' || p[1] == '/') &&
|
|---|
| 1584 | isalpha ((unsigned char)p[-1]) &&
|
|---|
| 1585 | (p == p2 + 1 || strchr (" \t:(", p[-2]) != 0)) {
|
|---|
| 1586 | p = strchr (p + 1, ':');
|
|---|
| 1587 | check_again = 1;
|
|---|
| 1588 | }
|
|---|
| 1589 | } while (check_again);
|
|---|
| 1590 | }
|
|---|
| 1591 | #endif
|
|---|
| 1592 | if (p != 0)
|
|---|
| 1593 | {
|
|---|
| 1594 | struct nameseq *target;
|
|---|
| 1595 | target = PARSE_FILE_SEQ (&p2, struct nameseq, MAP_COLON, NULL,
|
|---|
| 1596 | PARSEFS_NOGLOB);
|
|---|
| 1597 | ++p2;
|
|---|
| 1598 | if (target == 0)
|
|---|
| 1599 | O (fatal, fstart, _("missing target pattern"));
|
|---|
| 1600 | else if (target->next != 0)
|
|---|
| 1601 | OS (fatal, fstart, _("multiple target patterns (target '%s')"), target->name); /* bird added target */
|
|---|
| 1602 | pattern_percent = find_percent_cached (&target->name);
|
|---|
| 1603 | pattern = target->name;
|
|---|
| 1604 | if (pattern_percent == 0)
|
|---|
| 1605 | OS (fatal, fstart, _("target pattern contains no '%%' (target '%s')"), target->name); /* bird added target */
|
|---|
| 1606 | free_ns (target);
|
|---|
| 1607 | }
|
|---|
| 1608 | else
|
|---|
| 1609 | pattern = 0;
|
|---|
| 1610 |
|
|---|
| 1611 | /* Strip leading and trailing whitespaces. */
|
|---|
| 1612 | beg = p2;
|
|---|
| 1613 | end = beg + strlen (beg) - 1;
|
|---|
| 1614 | strip_whitespace (&beg, &end);
|
|---|
| 1615 |
|
|---|
| 1616 | /* Put all the prerequisites here; they'll be parsed later. */
|
|---|
| 1617 | if (beg <= end && *beg != '\0')
|
|---|
| 1618 | depstr = xstrndup (beg, end - beg + 1);
|
|---|
| 1619 | else
|
|---|
| 1620 | depstr = 0;
|
|---|
| 1621 |
|
|---|
| 1622 | commands_idx = 0;
|
|---|
| 1623 | if (cmdleft != 0)
|
|---|
| 1624 | {
|
|---|
| 1625 | /* Semicolon means rest of line is a command. */
|
|---|
| 1626 | unsigned int l = strlen (cmdleft);
|
|---|
| 1627 |
|
|---|
| 1628 | cmds_started = fstart->lineno;
|
|---|
| 1629 |
|
|---|
| 1630 | /* Add this command line to the buffer. */
|
|---|
| 1631 | if (l + 2 > commands_len)
|
|---|
| 1632 | {
|
|---|
| 1633 | commands_len = (l + 2) * 2;
|
|---|
| 1634 | commands = xrealloc (commands, commands_len);
|
|---|
| 1635 | }
|
|---|
| 1636 | memcpy (commands, cmdleft, l);
|
|---|
| 1637 | commands_idx += l;
|
|---|
| 1638 | commands[commands_idx++] = '\n';
|
|---|
| 1639 | }
|
|---|
| 1640 |
|
|---|
| 1641 | /* Determine if this target should be made default. We used to do
|
|---|
| 1642 | this in record_files() but because of the delayed target recording
|
|---|
| 1643 | and because preprocessor directives are legal in target's commands
|
|---|
| 1644 | it is too late. Consider this fragment for example:
|
|---|
| 1645 |
|
|---|
| 1646 | foo:
|
|---|
| 1647 |
|
|---|
| 1648 | ifeq ($(.DEFAULT_GOAL),foo)
|
|---|
| 1649 | ...
|
|---|
| 1650 | endif
|
|---|
| 1651 |
|
|---|
| 1652 | Because the target is not recorded until after ifeq directive is
|
|---|
| 1653 | evaluated the .DEFAULT_GOAL does not contain foo yet as one
|
|---|
| 1654 | would expect. Because of this we have to move the logic here. */
|
|---|
| 1655 |
|
|---|
| 1656 | if (set_default && default_goal_var->value[0] == '\0')
|
|---|
| 1657 | {
|
|---|
| 1658 | struct dep *d;
|
|---|
| 1659 | struct nameseq *t = filenames;
|
|---|
| 1660 |
|
|---|
| 1661 | for (; t != 0; t = t->next)
|
|---|
| 1662 | {
|
|---|
| 1663 | int reject = 0;
|
|---|
| 1664 | const char *name = t->name;
|
|---|
| 1665 |
|
|---|
| 1666 | /* We have nothing to do if this is an implicit rule. */
|
|---|
| 1667 | if (strchr (name, '%') != 0)
|
|---|
| 1668 | break;
|
|---|
| 1669 |
|
|---|
| 1670 | /* See if this target's name does not start with a '.',
|
|---|
| 1671 | unless it contains a slash. */
|
|---|
| 1672 | if (*name == '.' && strchr (name, '/') == 0
|
|---|
| 1673 | #ifdef HAVE_DOS_PATHS
|
|---|
| 1674 | && strchr (name, '\\') == 0
|
|---|
| 1675 | #endif
|
|---|
| 1676 | )
|
|---|
| 1677 | continue;
|
|---|
| 1678 |
|
|---|
| 1679 |
|
|---|
| 1680 | /* If this file is a suffix, don't let it be
|
|---|
| 1681 | the default goal file. */
|
|---|
| 1682 | for (d = suffix_file->deps; d != 0; d = d->next)
|
|---|
| 1683 | {
|
|---|
| 1684 | register struct dep *d2;
|
|---|
| 1685 | if (*dep_name (d) != '.' && streq (name, dep_name (d)))
|
|---|
| 1686 | {
|
|---|
| 1687 | reject = 1;
|
|---|
| 1688 | break;
|
|---|
| 1689 | }
|
|---|
| 1690 | for (d2 = suffix_file->deps; d2 != 0; d2 = d2->next)
|
|---|
| 1691 | {
|
|---|
| 1692 | #ifndef CONFIG_WITH_STRCACHE2
|
|---|
| 1693 | unsigned int l = strlen (dep_name (d2));
|
|---|
| 1694 | #else
|
|---|
| 1695 | unsigned int l = strcache2_get_len (&file_strcache, dep_name (d2));
|
|---|
| 1696 | #endif
|
|---|
| 1697 | if (!strneq (name, dep_name (d2), l))
|
|---|
| 1698 | continue;
|
|---|
| 1699 | if (streq (name + l, dep_name (d)))
|
|---|
| 1700 | {
|
|---|
| 1701 | reject = 1;
|
|---|
| 1702 | break;
|
|---|
| 1703 | }
|
|---|
| 1704 | }
|
|---|
| 1705 |
|
|---|
| 1706 | if (reject)
|
|---|
| 1707 | break;
|
|---|
| 1708 | }
|
|---|
| 1709 |
|
|---|
| 1710 | if (!reject)
|
|---|
| 1711 | {
|
|---|
| 1712 | define_variable_global (".DEFAULT_GOAL", 13, t->name,
|
|---|
| 1713 | o_file, 0, NILF);
|
|---|
| 1714 | break;
|
|---|
| 1715 | }
|
|---|
| 1716 | }
|
|---|
| 1717 | }
|
|---|
| 1718 |
|
|---|
| 1719 | continue;
|
|---|
| 1720 | }
|
|---|
| 1721 |
|
|---|
| 1722 | /* We get here except in the case that we just read a rule line.
|
|---|
| 1723 | Record now the last rule we read, so following spurious
|
|---|
| 1724 | commands are properly diagnosed. */
|
|---|
| 1725 | record_waiting_files ();
|
|---|
| 1726 | }
|
|---|
| 1727 |
|
|---|
| 1728 | #undef word1eq
|
|---|
| 1729 |
|
|---|
| 1730 | if (conditionals->if_cmds)
|
|---|
| 1731 | O (fatal, fstart, _("missing 'endif'"));
|
|---|
| 1732 | #ifdef KMK
|
|---|
| 1733 |
|
|---|
| 1734 | if (kdata != NULL)
|
|---|
| 1735 | O (fatal, fstart, _("missing `kBuild-endef-*'"));
|
|---|
| 1736 | #endif
|
|---|
| 1737 |
|
|---|
| 1738 | /* At eof, record the last rule. */
|
|---|
| 1739 | record_waiting_files ();
|
|---|
| 1740 |
|
|---|
| 1741 | free (collapsed);
|
|---|
| 1742 | free (commands);
|
|---|
| 1743 | }
|
|---|
| 1744 | |
|---|
| 1745 |
|
|---|
| 1746 |
|
|---|
| 1747 | /* Remove comments from LINE.
|
|---|
| 1748 | This is done by copying the text at LINE onto itself. */
|
|---|
| 1749 |
|
|---|
| 1750 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1751 | static void
|
|---|
| 1752 | remove_comments (char *line)
|
|---|
| 1753 | #else
|
|---|
| 1754 | static char *
|
|---|
| 1755 | remove_comments (char *line, char *eos)
|
|---|
| 1756 | #endif
|
|---|
| 1757 | {
|
|---|
| 1758 | char *comment;
|
|---|
| 1759 |
|
|---|
| 1760 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1761 | comment = find_char_unquote (line, MAP_COMMENT);
|
|---|
| 1762 |
|
|---|
| 1763 | if (comment != 0)
|
|---|
| 1764 | /* Cut off the line at the #. */
|
|---|
| 1765 | *comment = '\0';
|
|---|
| 1766 | #else
|
|---|
| 1767 | comment = find_char_unquote_0 (line, '#', MAP_COMMENT, &eos);
|
|---|
| 1768 | if (comment)
|
|---|
| 1769 | {
|
|---|
| 1770 | /* Cut off the line at the #. */
|
|---|
| 1771 | *comment = '\0';
|
|---|
| 1772 | return comment;
|
|---|
| 1773 | }
|
|---|
| 1774 | return eos;
|
|---|
| 1775 | #endif
|
|---|
| 1776 | }
|
|---|
| 1777 |
|
|---|
| 1778 | /* Execute a 'undefine' directive.
|
|---|
| 1779 | The undefine line has already been read, and NAME is the name of
|
|---|
| 1780 | the variable to be undefined. */
|
|---|
| 1781 |
|
|---|
| 1782 | static void
|
|---|
| 1783 | do_undefine (char *name, enum variable_origin origin, struct ebuffer *ebuf)
|
|---|
| 1784 | {
|
|---|
| 1785 | char *p, *var;
|
|---|
| 1786 |
|
|---|
| 1787 | /* Expand the variable name and find the beginning (NAME) and end. */
|
|---|
| 1788 | var = allocated_variable_expand (name);
|
|---|
| 1789 | name = next_token (var);
|
|---|
| 1790 | if (*name == '\0')
|
|---|
| 1791 | O (fatal, &ebuf->floc, _("empty variable name"));
|
|---|
| 1792 | p = name + strlen (name) - 1;
|
|---|
| 1793 | while (p > name && ISBLANK (*p))
|
|---|
| 1794 | --p;
|
|---|
| 1795 | p[1] = '\0';
|
|---|
| 1796 |
|
|---|
| 1797 | undefine_variable_global (name, p - name + 1, origin);
|
|---|
| 1798 | free (var);
|
|---|
| 1799 | }
|
|---|
| 1800 |
|
|---|
| 1801 | /* Execute a 'define' directive.
|
|---|
| 1802 | The first line has already been read, and NAME is the name of
|
|---|
| 1803 | the variable to be defined. The following lines remain to be read. */
|
|---|
| 1804 |
|
|---|
| 1805 | static struct variable *
|
|---|
| 1806 | do_define (char *name IF_WITH_VALUE_LENGTH_PARAM(char *eos),
|
|---|
| 1807 | enum variable_origin origin, struct ebuffer *ebuf)
|
|---|
| 1808 | {
|
|---|
| 1809 | struct variable *v;
|
|---|
| 1810 | struct variable var;
|
|---|
| 1811 | floc defstart;
|
|---|
| 1812 | int nlevels = 1;
|
|---|
| 1813 | unsigned int length = 100;
|
|---|
| 1814 | char *definition = xmalloc (length);
|
|---|
| 1815 | unsigned int idx = 0;
|
|---|
| 1816 | char *p, *n;
|
|---|
| 1817 |
|
|---|
| 1818 | defstart = ebuf->floc;
|
|---|
| 1819 |
|
|---|
| 1820 | p = parse_variable_definition (name, &var);
|
|---|
| 1821 | if (p == NULL)
|
|---|
| 1822 | /* No assignment token, so assume recursive. */
|
|---|
| 1823 | var.flavor = f_recursive;
|
|---|
| 1824 | else
|
|---|
| 1825 | {
|
|---|
| 1826 | if (var.value[0] != '\0')
|
|---|
| 1827 | O (error, &defstart, _("extraneous text after 'define' directive"));
|
|---|
| 1828 |
|
|---|
| 1829 | /* Chop the string before the assignment token to get the name. */
|
|---|
| 1830 | #ifndef CONFIG_WITH_STRCACHE2
|
|---|
| 1831 | var.name[var.length] = '\0';
|
|---|
| 1832 | #else
|
|---|
| 1833 | assert (!strcache2_is_cached (&variable_strcache, var.name));
|
|---|
| 1834 | ((char *)var.name)[var.length] = '\0';
|
|---|
| 1835 | #endif
|
|---|
| 1836 | }
|
|---|
| 1837 |
|
|---|
| 1838 | /* Expand the variable name and find the beginning (NAME) and end. */
|
|---|
| 1839 | n = allocated_variable_expand (name);
|
|---|
| 1840 | name = next_token (n);
|
|---|
| 1841 | if (name[0] == '\0')
|
|---|
| 1842 | O (fatal, &defstart, _("empty variable name"));
|
|---|
| 1843 | p = name + strlen (name) - 1;
|
|---|
| 1844 | while (p > name && ISBLANK (*p))
|
|---|
| 1845 | --p;
|
|---|
| 1846 | p[1] = '\0';
|
|---|
| 1847 |
|
|---|
| 1848 | /* Now read the value of the variable. */
|
|---|
| 1849 | while (1)
|
|---|
| 1850 | {
|
|---|
| 1851 | unsigned int len;
|
|---|
| 1852 | char *line;
|
|---|
| 1853 | long nlines = readline (ebuf);
|
|---|
| 1854 |
|
|---|
| 1855 | /* If there is nothing left to be eval'd, there's no 'endef'!! */
|
|---|
| 1856 | if (nlines < 0)
|
|---|
| 1857 | O (fatal, &defstart, _("missing 'endef', unterminated 'define'"));
|
|---|
| 1858 |
|
|---|
| 1859 | ebuf->floc.lineno += nlines;
|
|---|
| 1860 | line = ebuf->buffer;
|
|---|
| 1861 |
|
|---|
| 1862 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1863 | collapse_continuations (line);
|
|---|
| 1864 | #else
|
|---|
| 1865 | ebuf->eol = collapse_continuations (line, ebuf->eol - line);
|
|---|
| 1866 | #endif
|
|---|
| 1867 |
|
|---|
| 1868 | /* If the line doesn't begin with a tab, test to see if it introduces
|
|---|
| 1869 | another define, or ends one. Stop if we find an 'endef' */
|
|---|
| 1870 | if (line[0] != cmd_prefix)
|
|---|
| 1871 | {
|
|---|
| 1872 | p = next_token (line);
|
|---|
| 1873 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1874 | len = strlen (p);
|
|---|
| 1875 | #else
|
|---|
| 1876 | len = ebuf->eol - p;
|
|---|
| 1877 | assert (len == strlen (p));
|
|---|
| 1878 | #endif
|
|---|
| 1879 |
|
|---|
| 1880 | /* If this is another 'define', increment the level count. */
|
|---|
| 1881 | if ((len == 6 || (len > 6 && ISBLANK (p[6])))
|
|---|
| 1882 | && strneq (p, "define", 6))
|
|---|
| 1883 | ++nlevels;
|
|---|
| 1884 |
|
|---|
| 1885 | /* If this is an 'endef', decrement the count. If it's now 0,
|
|---|
| 1886 | we've found the last one. */
|
|---|
| 1887 | else if ((len == 5 || (len > 5 && ISBLANK (p[5])))
|
|---|
| 1888 | && strneq (p, "endef", 5))
|
|---|
| 1889 | {
|
|---|
| 1890 | p += 5;
|
|---|
| 1891 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1892 | remove_comments (p);
|
|---|
| 1893 | #else
|
|---|
| 1894 | ebuf->eol = remove_comments (p, ebuf->eol);
|
|---|
| 1895 | #endif
|
|---|
| 1896 | if (*(next_token (p)) != '\0')
|
|---|
| 1897 | O (error, &ebuf->floc,
|
|---|
| 1898 | _("extraneous text after 'endef' directive"));
|
|---|
| 1899 |
|
|---|
| 1900 | if (--nlevels == 0)
|
|---|
| 1901 | break;
|
|---|
| 1902 | }
|
|---|
| 1903 | }
|
|---|
| 1904 |
|
|---|
| 1905 | /* Add this line to the variable definition. */
|
|---|
| 1906 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1907 | len = strlen (line);
|
|---|
| 1908 | #else
|
|---|
| 1909 | len = ebuf->eol - line;
|
|---|
| 1910 | assert (len == strlen (line));
|
|---|
| 1911 | #endif
|
|---|
| 1912 | if (idx + len + 1 > length)
|
|---|
| 1913 | {
|
|---|
| 1914 | length = (idx + len) * 2;
|
|---|
| 1915 | definition = xrealloc (definition, length + 1);
|
|---|
| 1916 | }
|
|---|
| 1917 |
|
|---|
| 1918 | memcpy (&definition[idx], line, len);
|
|---|
| 1919 | idx += len;
|
|---|
| 1920 | /* Separate lines with a newline. */
|
|---|
| 1921 | definition[idx++] = '\n';
|
|---|
| 1922 | }
|
|---|
| 1923 |
|
|---|
| 1924 | /* We've got what we need; define the variable. */
|
|---|
| 1925 | if (idx == 0)
|
|---|
| 1926 | definition[0] = '\0';
|
|---|
| 1927 | else
|
|---|
| 1928 | definition[idx - 1] = '\0';
|
|---|
| 1929 |
|
|---|
| 1930 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1931 | v = do_variable_definition (&defstart, name,
|
|---|
| 1932 | definition, origin, var.flavor, 0);
|
|---|
| 1933 | #else
|
|---|
| 1934 | v = do_variable_definition_2 (&defstart, name, definition,
|
|---|
| 1935 | idx ? idx - 1 : idx, var.flavor == f_simple,
|
|---|
| 1936 | 0 /* free_value */, origin, var.flavor,
|
|---|
| 1937 | 0 /*target_var*/);
|
|---|
| 1938 | #endif
|
|---|
| 1939 | free (definition);
|
|---|
| 1940 | free (n);
|
|---|
| 1941 | return (v);
|
|---|
| 1942 | }
|
|---|
| 1943 | |
|---|
| 1944 |
|
|---|
| 1945 | /* Interpret conditional commands "ifdef", "ifndef", "ifeq",
|
|---|
| 1946 | "ifneq", "if1of", "ifn1of", "else" and "endif".
|
|---|
| 1947 | LINE is the input line, with the command as its first word.
|
|---|
| 1948 |
|
|---|
| 1949 | FILENAME and LINENO are the filename and line number in the
|
|---|
| 1950 | current makefile. They are used for error messages.
|
|---|
| 1951 |
|
|---|
| 1952 | Value is -2 if the line is not a conditional at all,
|
|---|
| 1953 | -1 if the line is an invalid conditional,
|
|---|
| 1954 | 0 if following text should be interpreted,
|
|---|
| 1955 | 1 if following text should be ignored. */
|
|---|
| 1956 |
|
|---|
| 1957 | static int
|
|---|
| 1958 | conditional_line (char *line IF_WITH_VALUE_LENGTH_PARAM(char *eol), int len, const floc *flocp)
|
|---|
| 1959 | {
|
|---|
| 1960 | const char *cmdname;
|
|---|
| 1961 | enum { c_ifdef, c_ifndef, c_ifeq, c_ifneq,
|
|---|
| 1962 | #ifdef CONFIG_WITH_SET_CONDITIONALS
|
|---|
| 1963 | c_if1of, c_ifn1of,
|
|---|
| 1964 | #endif
|
|---|
| 1965 | #ifdef CONFIG_WITH_IF_CONDITIONALS
|
|---|
| 1966 | c_ifcond,
|
|---|
| 1967 | #endif
|
|---|
| 1968 | c_else, c_endif
|
|---|
| 1969 | } cmdtype;
|
|---|
| 1970 | unsigned int i;
|
|---|
| 1971 | unsigned int o;
|
|---|
| 1972 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 1973 | assert (strchr (line, '\0') == eol);
|
|---|
| 1974 | #endif
|
|---|
| 1975 |
|
|---|
| 1976 | /* Compare a word, both length and contents. */
|
|---|
| 1977 | #define word1eq(s) (len == CSTRLEN (s) && strneq (s, line, CSTRLEN (s)))
|
|---|
| 1978 | #define chkword(s, t) if (word1eq (s)) { cmdtype = (t); cmdname = (s); }
|
|---|
| 1979 |
|
|---|
| 1980 | /* Make sure this line is a conditional. */
|
|---|
| 1981 | chkword ("ifdef", c_ifdef)
|
|---|
| 1982 | else chkword ("ifndef", c_ifndef)
|
|---|
| 1983 | else chkword ("ifeq", c_ifeq)
|
|---|
| 1984 | else chkword ("ifneq", c_ifneq)
|
|---|
| 1985 | #ifdef CONFIG_WITH_SET_CONDITIONALS
|
|---|
| 1986 | else chkword ("if1of", c_if1of)
|
|---|
| 1987 | else chkword ("ifn1of", c_ifn1of)
|
|---|
| 1988 | #endif
|
|---|
| 1989 | #ifdef CONFIG_WITH_IF_CONDITIONALS
|
|---|
| 1990 | else chkword ("if", c_ifcond)
|
|---|
| 1991 | #endif
|
|---|
| 1992 | else chkword ("else", c_else)
|
|---|
| 1993 | else chkword ("endif", c_endif)
|
|---|
| 1994 | else
|
|---|
| 1995 | return -2;
|
|---|
| 1996 |
|
|---|
| 1997 | /* Found one: skip past it and any whitespace after it. */
|
|---|
| 1998 | line += len;
|
|---|
| 1999 | NEXT_TOKEN (line);
|
|---|
| 2000 |
|
|---|
| 2001 | #define EXTRATEXT() OS (error, flocp, _("extraneous text after '%s' directive"), cmdname)
|
|---|
| 2002 | #define EXTRACMD() OS (fatal, flocp, _("extraneous '%s'"), cmdname)
|
|---|
| 2003 |
|
|---|
| 2004 | /* An 'endif' cannot contain extra text, and reduces the if-depth by 1 */
|
|---|
| 2005 | if (cmdtype == c_endif)
|
|---|
| 2006 | {
|
|---|
| 2007 | if (*line != '\0')
|
|---|
| 2008 | EXTRATEXT ();
|
|---|
| 2009 |
|
|---|
| 2010 | if (!conditionals->if_cmds)
|
|---|
| 2011 | EXTRACMD ();
|
|---|
| 2012 |
|
|---|
| 2013 | --conditionals->if_cmds;
|
|---|
| 2014 |
|
|---|
| 2015 | goto DONE;
|
|---|
| 2016 | }
|
|---|
| 2017 |
|
|---|
| 2018 | /* An 'else' statement can either be simple, or it can have another
|
|---|
| 2019 | conditional after it. */
|
|---|
| 2020 | if (cmdtype == c_else)
|
|---|
| 2021 | {
|
|---|
| 2022 | const char *p;
|
|---|
| 2023 |
|
|---|
| 2024 | if (!conditionals->if_cmds)
|
|---|
| 2025 | EXTRACMD ();
|
|---|
| 2026 |
|
|---|
| 2027 | o = conditionals->if_cmds - 1;
|
|---|
| 2028 |
|
|---|
| 2029 | if (conditionals->seen_else[o])
|
|---|
| 2030 | O (fatal, flocp, _("only one 'else' per conditional"));
|
|---|
| 2031 |
|
|---|
| 2032 | /* Change the state of ignorance. */
|
|---|
| 2033 | switch (conditionals->ignoring[o])
|
|---|
| 2034 | {
|
|---|
| 2035 | case 0:
|
|---|
| 2036 | /* We've just been interpreting. Never do it again. */
|
|---|
| 2037 | conditionals->ignoring[o] = 2;
|
|---|
| 2038 | break;
|
|---|
| 2039 | case 1:
|
|---|
| 2040 | /* We've never interpreted yet. Maybe this time! */
|
|---|
| 2041 | conditionals->ignoring[o] = 0;
|
|---|
| 2042 | break;
|
|---|
| 2043 | }
|
|---|
| 2044 |
|
|---|
| 2045 | /* It's a simple 'else'. */
|
|---|
| 2046 | if (*line == '\0')
|
|---|
| 2047 | {
|
|---|
| 2048 | conditionals->seen_else[o] = 1;
|
|---|
| 2049 | goto DONE;
|
|---|
| 2050 | }
|
|---|
| 2051 |
|
|---|
| 2052 | /* The 'else' has extra text. That text must be another conditional
|
|---|
| 2053 | and cannot be an 'else' or 'endif'. */
|
|---|
| 2054 |
|
|---|
| 2055 | /* Find the length of the next word. */
|
|---|
| 2056 | for (p = line+1; ! STOP_SET (*p, MAP_SPACE|MAP_NUL); ++p)
|
|---|
| 2057 | ;
|
|---|
| 2058 | len = p - line;
|
|---|
| 2059 |
|
|---|
| 2060 | /* If it's 'else' or 'endif' or an illegal conditional, fail. */
|
|---|
| 2061 | if (word1eq ("else") || word1eq ("endif")
|
|---|
| 2062 | || conditional_line (line IF_WITH_VALUE_LENGTH_PARAM(eol), len, flocp) < 0)
|
|---|
| 2063 | EXTRATEXT ();
|
|---|
| 2064 | else
|
|---|
| 2065 | {
|
|---|
| 2066 | /* conditional_line() created a new level of conditional.
|
|---|
| 2067 | Raise it back to this level. */
|
|---|
| 2068 | if (conditionals->ignoring[o] < 2)
|
|---|
| 2069 | conditionals->ignoring[o] = conditionals->ignoring[o+1];
|
|---|
| 2070 | --conditionals->if_cmds;
|
|---|
| 2071 | }
|
|---|
| 2072 |
|
|---|
| 2073 | goto DONE;
|
|---|
| 2074 | }
|
|---|
| 2075 |
|
|---|
| 2076 | #ifndef KMK
|
|---|
| 2077 | if (conditionals->allocated == 0)
|
|---|
| 2078 | {
|
|---|
| 2079 | conditionals->allocated = 5;
|
|---|
| 2080 | conditionals->ignoring = xmalloc (conditionals->allocated);
|
|---|
| 2081 | conditionals->seen_else = xmalloc (conditionals->allocated);
|
|---|
| 2082 | }
|
|---|
| 2083 | #endif
|
|---|
| 2084 |
|
|---|
| 2085 | o = conditionals->if_cmds++;
|
|---|
| 2086 | if (conditionals->if_cmds > conditionals->allocated)
|
|---|
| 2087 | {
|
|---|
| 2088 | #ifdef KMK
|
|---|
| 2089 | if (conditionals->allocated <= sizeof (conditionals->ignoring_first))
|
|---|
| 2090 | {
|
|---|
| 2091 | assert (conditionals->allocated == sizeof (conditionals->ignoring_first));
|
|---|
| 2092 | conditionals->allocated += 16;
|
|---|
| 2093 | conditionals->ignoring = xmalloc (conditionals->allocated);
|
|---|
| 2094 | memcpy (conditionals->ignoring, conditionals->ignoring_first,
|
|---|
| 2095 | sizeof (conditionals->ignoring_first));
|
|---|
| 2096 | conditionals->seen_else = xmalloc (conditionals->allocated);
|
|---|
| 2097 | memcpy (conditionals->seen_else, conditionals->seen_else_first,
|
|---|
| 2098 | sizeof (conditionals->seen_else_first));
|
|---|
| 2099 | }
|
|---|
| 2100 | else
|
|---|
| 2101 | {
|
|---|
| 2102 | conditionals->allocated *= 2;
|
|---|
| 2103 | #else /* !KMK */
|
|---|
| 2104 | conditionals->allocated += 5;
|
|---|
| 2105 | #endif /* !KMK */
|
|---|
| 2106 | conditionals->ignoring = xrealloc (conditionals->ignoring,
|
|---|
| 2107 | conditionals->allocated);
|
|---|
| 2108 | conditionals->seen_else = xrealloc (conditionals->seen_else,
|
|---|
| 2109 | conditionals->allocated);
|
|---|
| 2110 | #ifdef KMK
|
|---|
| 2111 | }
|
|---|
| 2112 | #endif
|
|---|
| 2113 | }
|
|---|
| 2114 |
|
|---|
| 2115 | /* Record that we have seen an 'if...' but no 'else' so far. */
|
|---|
| 2116 | conditionals->seen_else[o] = 0;
|
|---|
| 2117 |
|
|---|
| 2118 | /* Search through the stack to see if we're already ignoring. */
|
|---|
| 2119 | for (i = 0; i < o; ++i)
|
|---|
| 2120 | if (conditionals->ignoring[i])
|
|---|
| 2121 | {
|
|---|
| 2122 | /* We are already ignoring, so just push a level to match the next
|
|---|
| 2123 | "else" or "endif", and keep ignoring. We don't want to expand
|
|---|
| 2124 | variables in the condition. */
|
|---|
| 2125 | conditionals->ignoring[o] = 1;
|
|---|
| 2126 | return 1;
|
|---|
| 2127 | }
|
|---|
| 2128 |
|
|---|
| 2129 | if (cmdtype == c_ifdef || cmdtype == c_ifndef)
|
|---|
| 2130 | {
|
|---|
| 2131 | char *var;
|
|---|
| 2132 | struct variable *v;
|
|---|
| 2133 | char *p;
|
|---|
| 2134 |
|
|---|
| 2135 | /* Expand the thing we're looking up, so we can use indirect and
|
|---|
| 2136 | constructed variable names. */
|
|---|
| 2137 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2138 | var = allocated_variable_expand (line);
|
|---|
| 2139 | #else
|
|---|
| 2140 | var = variable_expand_string_2 (NULL, line, eol - line, &p);
|
|---|
| 2141 | #endif
|
|---|
| 2142 |
|
|---|
| 2143 | /* Make sure there's only one variable name to test. */
|
|---|
| 2144 | p = end_of_token (var);
|
|---|
| 2145 | i = p - var;
|
|---|
| 2146 | NEXT_TOKEN (p);
|
|---|
| 2147 | if (*p != '\0')
|
|---|
| 2148 | return -1;
|
|---|
| 2149 |
|
|---|
| 2150 | var[i] = '\0';
|
|---|
| 2151 | v = lookup_variable (var, i);
|
|---|
| 2152 |
|
|---|
| 2153 | conditionals->ignoring[o] =
|
|---|
| 2154 | ((v != 0 && *v->value != '\0') == (cmdtype == c_ifndef));
|
|---|
| 2155 |
|
|---|
| 2156 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2157 | free (var);
|
|---|
| 2158 | #endif
|
|---|
| 2159 | }
|
|---|
| 2160 | #ifdef CONFIG_WITH_IF_CONDITIONALS
|
|---|
| 2161 | else if (cmdtype == c_ifcond)
|
|---|
| 2162 | {
|
|---|
| 2163 | int rval = expr_eval_if_conditionals (line, flocp);
|
|---|
| 2164 | if (rval == -1)
|
|---|
| 2165 | return rval;
|
|---|
| 2166 | conditionals->ignoring[o] = rval;
|
|---|
| 2167 | }
|
|---|
| 2168 | #endif
|
|---|
| 2169 | else
|
|---|
| 2170 | {
|
|---|
| 2171 | #ifdef CONFIG_WITH_SET_CONDITIONALS
|
|---|
| 2172 | /* "ifeq", "ifneq", "if1of" or "ifn1of". */
|
|---|
| 2173 | #else
|
|---|
| 2174 | /* "ifeq" or "ifneq". */
|
|---|
| 2175 | #endif
|
|---|
| 2176 | char *s1, *s2;
|
|---|
| 2177 | unsigned int l;
|
|---|
| 2178 | char termin = *line == '(' ? ',' : *line;
|
|---|
| 2179 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2180 | char *s1_end, *s2_end;
|
|---|
| 2181 | #endif
|
|---|
| 2182 |
|
|---|
| 2183 | if (termin != ',' && termin != '"' && termin != '\'')
|
|---|
| 2184 | return -1;
|
|---|
| 2185 |
|
|---|
| 2186 | s1 = ++line;
|
|---|
| 2187 | /* Find the end of the first string. */
|
|---|
| 2188 | if (termin == ',')
|
|---|
| 2189 | {
|
|---|
| 2190 | int count = 0;
|
|---|
| 2191 | for (; *line != '\0'; ++line)
|
|---|
| 2192 | if (*line == '(')
|
|---|
| 2193 | ++count;
|
|---|
| 2194 | else if (*line == ')')
|
|---|
| 2195 | --count;
|
|---|
| 2196 | else if (*line == ',' && count <= 0)
|
|---|
| 2197 | break;
|
|---|
| 2198 | }
|
|---|
| 2199 | else
|
|---|
| 2200 | while (*line != '\0' && *line != termin)
|
|---|
| 2201 | ++line;
|
|---|
| 2202 |
|
|---|
| 2203 | if (*line == '\0')
|
|---|
| 2204 | return -1;
|
|---|
| 2205 |
|
|---|
| 2206 | if (termin == ',')
|
|---|
| 2207 | {
|
|---|
| 2208 | /* Strip blanks after the first string. */
|
|---|
| 2209 | char *p = line++;
|
|---|
| 2210 | while (ISBLANK (p[-1]))
|
|---|
| 2211 | --p;
|
|---|
| 2212 | *p = '\0';
|
|---|
| 2213 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2214 | l = p - s1;
|
|---|
| 2215 | #endif
|
|---|
| 2216 | }
|
|---|
| 2217 | else
|
|---|
| 2218 | {
|
|---|
| 2219 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2220 | l = line - s1;
|
|---|
| 2221 | #endif
|
|---|
| 2222 | *line++ = '\0';
|
|---|
| 2223 | }
|
|---|
| 2224 |
|
|---|
| 2225 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2226 | s2 = variable_expand (s1);
|
|---|
| 2227 | /* We must allocate a new copy of the expanded string because
|
|---|
| 2228 | variable_expand re-uses the same buffer. */
|
|---|
| 2229 | l = strlen (s2);
|
|---|
| 2230 | s1 = alloca (l + 1);
|
|---|
| 2231 | memcpy (s1, s2, l + 1);
|
|---|
| 2232 | #else
|
|---|
| 2233 | s1 = variable_expand_string_2 (NULL, s1, l, &s1_end);
|
|---|
| 2234 | #endif
|
|---|
| 2235 |
|
|---|
| 2236 | if (termin != ',')
|
|---|
| 2237 | /* Find the start of the second string. */
|
|---|
| 2238 | NEXT_TOKEN (line);
|
|---|
| 2239 |
|
|---|
| 2240 | termin = termin == ',' ? ')' : *line;
|
|---|
| 2241 | if (termin != ')' && termin != '"' && termin != '\'')
|
|---|
| 2242 | return -1;
|
|---|
| 2243 |
|
|---|
| 2244 | /* Find the end of the second string. */
|
|---|
| 2245 | if (termin == ')')
|
|---|
| 2246 | {
|
|---|
| 2247 | int count = 0;
|
|---|
| 2248 | s2 = next_token (line);
|
|---|
| 2249 | for (line = s2; *line != '\0'; ++line)
|
|---|
| 2250 | {
|
|---|
| 2251 | if (*line == '(')
|
|---|
| 2252 | ++count;
|
|---|
| 2253 | else if (*line == ')')
|
|---|
| 2254 | {
|
|---|
| 2255 | if (count <= 0)
|
|---|
| 2256 | break;
|
|---|
| 2257 | else
|
|---|
| 2258 | --count;
|
|---|
| 2259 | }
|
|---|
| 2260 | }
|
|---|
| 2261 | }
|
|---|
| 2262 | else
|
|---|
| 2263 | {
|
|---|
| 2264 | ++line;
|
|---|
| 2265 | s2 = line;
|
|---|
| 2266 | while (*line != '\0' && *line != termin)
|
|---|
| 2267 | ++line;
|
|---|
| 2268 | }
|
|---|
| 2269 |
|
|---|
| 2270 | if (*line == '\0')
|
|---|
| 2271 | return -1;
|
|---|
| 2272 |
|
|---|
| 2273 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2274 | l = line - s2;
|
|---|
| 2275 | #endif
|
|---|
| 2276 | *(line++) = '\0';
|
|---|
| 2277 | NEXT_TOKEN (line);
|
|---|
| 2278 | if (*line != '\0')
|
|---|
| 2279 | EXTRATEXT ();
|
|---|
| 2280 |
|
|---|
| 2281 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2282 | s2 = variable_expand (s2);
|
|---|
| 2283 | #else
|
|---|
| 2284 | s2 = variable_expand_string_2 (s1_end + 1, s2, l, &s2_end);
|
|---|
| 2285 | if (s2 != s1_end + 1)
|
|---|
| 2286 | s1 += s2 - s1_end - 1; /* the variable buffer was reallocated */
|
|---|
| 2287 | #endif
|
|---|
| 2288 | #ifdef CONFIG_WITH_SET_CONDITIONALS
|
|---|
| 2289 | if (cmdtype == c_if1of || cmdtype == c_ifn1of)
|
|---|
| 2290 | {
|
|---|
| 2291 | const char *s1_cur;
|
|---|
| 2292 | unsigned int s1_len;
|
|---|
| 2293 | const char *s1_iterator = s1;
|
|---|
| 2294 |
|
|---|
| 2295 | conditionals->ignoring[o] = (cmdtype == c_if1of); /* if not found */
|
|---|
| 2296 | while ((s1_cur = find_next_token (&s1_iterator, &s1_len)) != 0)
|
|---|
| 2297 | {
|
|---|
| 2298 | const char *s2_cur;
|
|---|
| 2299 | unsigned int s2_len;
|
|---|
| 2300 | const char *s2_iterator = s2;
|
|---|
| 2301 | while ((s2_cur = find_next_token (&s2_iterator, &s2_len)) != 0)
|
|---|
| 2302 | if (s2_len == s1_len
|
|---|
| 2303 | && strneq (s2_cur, s1_cur, s1_len) )
|
|---|
| 2304 | {
|
|---|
| 2305 | conditionals->ignoring[o] = (cmdtype != c_if1of); /* found */
|
|---|
| 2306 | break;
|
|---|
| 2307 | }
|
|---|
| 2308 | }
|
|---|
| 2309 | }
|
|---|
| 2310 | else
|
|---|
| 2311 | conditionals->ignoring[o] = (streq (s1, s2) == (cmdtype == c_ifneq));
|
|---|
| 2312 | #else
|
|---|
| 2313 | conditionals->ignoring[o] = (streq (s1, s2) == (cmdtype == c_ifneq));
|
|---|
| 2314 | #endif
|
|---|
| 2315 | }
|
|---|
| 2316 |
|
|---|
| 2317 | DONE:
|
|---|
| 2318 | /* Search through the stack to see if we're ignoring. */
|
|---|
| 2319 | for (i = 0; i < conditionals->if_cmds; ++i)
|
|---|
| 2320 | if (conditionals->ignoring[i])
|
|---|
| 2321 | return 1;
|
|---|
| 2322 | return 0;
|
|---|
| 2323 | }
|
|---|
| 2324 | |
|---|
| 2325 |
|
|---|
| 2326 | /* Record target-specific variable values for files FILENAMES.
|
|---|
| 2327 | TWO_COLON is nonzero if a double colon was used.
|
|---|
| 2328 |
|
|---|
| 2329 | The links of FILENAMES are freed, and so are any names in it
|
|---|
| 2330 | that are not incorporated into other data structures.
|
|---|
| 2331 |
|
|---|
| 2332 | If the target is a pattern, add the variable to the pattern-specific
|
|---|
| 2333 | variable value list. */
|
|---|
| 2334 |
|
|---|
| 2335 | static void
|
|---|
| 2336 | record_target_var (struct nameseq *filenames, char *defn,
|
|---|
| 2337 | enum variable_origin origin, struct vmodifiers *vmod,
|
|---|
| 2338 | const floc *flocp)
|
|---|
| 2339 | {
|
|---|
| 2340 | struct nameseq *nextf;
|
|---|
| 2341 | struct variable_set_list *global;
|
|---|
| 2342 |
|
|---|
| 2343 | global = current_variable_set_list;
|
|---|
| 2344 |
|
|---|
| 2345 | /* If the variable is an append version, store that but treat it as a
|
|---|
| 2346 | normal recursive variable. */
|
|---|
| 2347 |
|
|---|
| 2348 | for (; filenames != 0; filenames = nextf)
|
|---|
| 2349 | {
|
|---|
| 2350 | struct variable *v;
|
|---|
| 2351 | const char *name = filenames->name;
|
|---|
| 2352 | const char *percent;
|
|---|
| 2353 | struct pattern_var *p;
|
|---|
| 2354 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2355 | const char *fname;
|
|---|
| 2356 | #endif
|
|---|
| 2357 |
|
|---|
| 2358 | nextf = filenames->next;
|
|---|
| 2359 | free_ns (filenames);
|
|---|
| 2360 |
|
|---|
| 2361 | /* If it's a pattern target, then add it to the pattern-specific
|
|---|
| 2362 | variable list. */
|
|---|
| 2363 | percent = find_percent_cached (&name);
|
|---|
| 2364 | if (percent)
|
|---|
| 2365 | {
|
|---|
| 2366 | /* Get a reference for this pattern-specific variable struct. */
|
|---|
| 2367 | p = create_pattern_var (name, percent);
|
|---|
| 2368 | p->variable.fileinfo = *flocp;
|
|---|
| 2369 | /* I don't think this can fail since we already determined it was a
|
|---|
| 2370 | variable definition. */
|
|---|
| 2371 | v = assign_variable_definition (&p->variable, defn IF_WITH_VALUE_LENGTH_PARAM(NULL));
|
|---|
| 2372 | assert (v != 0);
|
|---|
| 2373 |
|
|---|
| 2374 | v->origin = origin;
|
|---|
| 2375 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2376 | if (v->flavor == f_simple)
|
|---|
| 2377 | v->value = allocated_variable_expand (v->value);
|
|---|
| 2378 | else
|
|---|
| 2379 | v->value = xstrdup (v->value);
|
|---|
| 2380 | #else
|
|---|
| 2381 | v->value_length = strlen (v->value);
|
|---|
| 2382 | if (v->flavor == f_simple)
|
|---|
| 2383 | v->value = allocated_variable_expand_2 (v->value, v->value_length, &v->value_length);
|
|---|
| 2384 | else
|
|---|
| 2385 | v->value = (char *)memcpy (xmalloc (v->value_length + 1), v->value, v->value_length + 1);
|
|---|
| 2386 | v->value_alloc_len = v->value_length + 1;
|
|---|
| 2387 | #endif
|
|---|
| 2388 | }
|
|---|
| 2389 | else
|
|---|
| 2390 | {
|
|---|
| 2391 | struct file *f;
|
|---|
| 2392 |
|
|---|
| 2393 | /* Get a file reference for this file, and initialize it.
|
|---|
| 2394 | We don't want to just call enter_file() because that allocates a
|
|---|
| 2395 | new entry if the file is a double-colon, which we don't want in
|
|---|
| 2396 | this situation. */
|
|---|
| 2397 | #ifndef CONFIG_WITH_STRCACHE2
|
|---|
| 2398 | f = lookup_file (name);
|
|---|
| 2399 | if (!f)
|
|---|
| 2400 | f = enter_file (strcache_add (name));
|
|---|
| 2401 | #else /* CONFIG_WITH_STRCACHE2 */
|
|---|
| 2402 | /* XXX: this is probably already a cached string. */
|
|---|
| 2403 | fname = strcache_add (name);
|
|---|
| 2404 | f = lookup_file_cached (fname);
|
|---|
| 2405 | if (!f)
|
|---|
| 2406 | f = enter_file (fname);
|
|---|
| 2407 | #endif /* CONFIG_WITH_STRCACHE2 */
|
|---|
| 2408 | else if (f->double_colon)
|
|---|
| 2409 | f = f->double_colon;
|
|---|
| 2410 |
|
|---|
| 2411 | initialize_file_variables (f, 1);
|
|---|
| 2412 |
|
|---|
| 2413 | current_variable_set_list = f->variables;
|
|---|
| 2414 | v = try_variable_definition (flocp, defn IF_WITH_VALUE_LENGTH_PARAM(NULL), origin, 1);
|
|---|
| 2415 | if (!v)
|
|---|
| 2416 | O (fatal, flocp, _("Malformed target-specific variable definition"));
|
|---|
| 2417 | current_variable_set_list = global;
|
|---|
| 2418 | }
|
|---|
| 2419 |
|
|---|
| 2420 | /* Set up the variable to be *-specific. */
|
|---|
| 2421 | v->per_target = 1;
|
|---|
| 2422 | v->private_var = vmod->private_v;
|
|---|
| 2423 | v->export = vmod->export_v ? v_export : v_default;
|
|---|
| 2424 |
|
|---|
| 2425 | /* If it's not an override, check to see if there was a command-line
|
|---|
| 2426 | setting. If so, reset the value. */
|
|---|
| 2427 | if (v->origin != o_override)
|
|---|
| 2428 | {
|
|---|
| 2429 | struct variable *gv;
|
|---|
| 2430 | #ifndef CONFIG_WITH_STRCACHE2
|
|---|
| 2431 | int len = strlen (v->name);
|
|---|
| 2432 | #else
|
|---|
| 2433 | int len = !percent
|
|---|
| 2434 | ? strcache2_get_len (&variable_strcache, v->name)
|
|---|
| 2435 | : strlen(v->name);
|
|---|
| 2436 | #endif
|
|---|
| 2437 |
|
|---|
| 2438 | gv = lookup_variable (v->name, len);
|
|---|
| 2439 | if (gv && v != gv
|
|---|
| 2440 | && (gv->origin == o_env_override || gv->origin == o_command))
|
|---|
| 2441 | {
|
|---|
| 2442 | #ifdef CONFIG_WITH_RDONLY_VARIABLE_VALUE
|
|---|
| 2443 | assert (!v->rdonly_val); /* paranoia */
|
|---|
| 2444 | #endif
|
|---|
| 2445 | free (v->value);
|
|---|
| 2446 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2447 | v->value = xstrdup (gv->value);
|
|---|
| 2448 | #else
|
|---|
| 2449 | v->value = xstrndup (gv->value, gv->value_length);
|
|---|
| 2450 | v->value_length = gv->value_length;
|
|---|
| 2451 | #endif
|
|---|
| 2452 | v->origin = gv->origin;
|
|---|
| 2453 | v->recursive = gv->recursive;
|
|---|
| 2454 | v->append = 0;
|
|---|
| 2455 | VARIABLE_CHANGED (v);
|
|---|
| 2456 | }
|
|---|
| 2457 | }
|
|---|
| 2458 | }
|
|---|
| 2459 | }
|
|---|
| 2460 | |
|---|
| 2461 |
|
|---|
| 2462 | /* Record a description line for files FILENAMES,
|
|---|
| 2463 | with dependencies DEPS, commands to execute described
|
|---|
| 2464 | by COMMANDS and COMMANDS_IDX, coming from FILENAME:COMMANDS_STARTED.
|
|---|
| 2465 | TWO_COLON is nonzero if a double colon was used.
|
|---|
| 2466 | If not nil, PATTERN is the '%' pattern to make this
|
|---|
| 2467 | a static pattern rule, and PATTERN_PERCENT is a pointer
|
|---|
| 2468 | to the '%' within it.
|
|---|
| 2469 |
|
|---|
| 2470 | The links of FILENAMES are freed, and so are any names in it
|
|---|
| 2471 | that are not incorporated into other data structures. */
|
|---|
| 2472 |
|
|---|
| 2473 | static void
|
|---|
| 2474 | record_files (struct nameseq *filenames, const char *pattern,
|
|---|
| 2475 | const char *pattern_percent, char *depstr,
|
|---|
| 2476 | unsigned int cmds_started, char *commands,
|
|---|
| 2477 | unsigned int commands_idx, int two_colon,
|
|---|
| 2478 | char prefix, const floc *flocp)
|
|---|
| 2479 | {
|
|---|
| 2480 | #ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
|
|---|
| 2481 | struct file *prev_file = 0;
|
|---|
| 2482 | enum multitarget_mode { m_unsettled, m_no, m_yes, m_yes_maybe }
|
|---|
| 2483 | multi_mode = !two_colon && !pattern ? m_unsettled : m_no;
|
|---|
| 2484 | #endif
|
|---|
| 2485 | struct commands *cmds;
|
|---|
| 2486 | struct dep *deps;
|
|---|
| 2487 | const char *implicit_percent;
|
|---|
| 2488 | const char *name;
|
|---|
| 2489 |
|
|---|
| 2490 | /* If we've already snapped deps, that means we're in an eval being
|
|---|
| 2491 | resolved after the makefiles have been read in. We can't add more rules
|
|---|
| 2492 | at this time, since they won't get snapped and we'll get core dumps.
|
|---|
| 2493 | See Savannah bug # 12124. */
|
|---|
| 2494 | if (snapped_deps)
|
|---|
| 2495 | O (fatal, flocp, _("prerequisites cannot be defined in recipes"));
|
|---|
| 2496 |
|
|---|
| 2497 | /* Determine if this is a pattern rule or not. */
|
|---|
| 2498 | name = filenames->name;
|
|---|
| 2499 | implicit_percent = find_percent_cached (&name);
|
|---|
| 2500 |
|
|---|
| 2501 | /* If there's a recipe, set up a struct for it. */
|
|---|
| 2502 | if (commands_idx > 0)
|
|---|
| 2503 | {
|
|---|
| 2504 | #ifndef CONFIG_WITH_ALLOC_CACHES
|
|---|
| 2505 | cmds = xmalloc (sizeof (struct commands));
|
|---|
| 2506 | #else
|
|---|
| 2507 | cmds = alloccache_alloc (&commands_cache);
|
|---|
| 2508 | #endif
|
|---|
| 2509 | cmds->fileinfo.filenm = flocp->filenm;
|
|---|
| 2510 | cmds->fileinfo.lineno = cmds_started;
|
|---|
| 2511 | cmds->fileinfo.offset = 0;
|
|---|
| 2512 | cmds->commands = xstrndup (commands, commands_idx);
|
|---|
| 2513 | cmds->command_lines = 0;
|
|---|
| 2514 | cmds->recipe_prefix = prefix;
|
|---|
| 2515 | #ifdef CONFIG_WITH_MEMORY_OPTIMIZATIONS
|
|---|
| 2516 | cmds->refs = 0;
|
|---|
| 2517 | #endif
|
|---|
| 2518 | }
|
|---|
| 2519 | else
|
|---|
| 2520 | cmds = 0;
|
|---|
| 2521 |
|
|---|
| 2522 | /* If there's a prereq string then parse it--unless it's eligible for 2nd
|
|---|
| 2523 | expansion: if so, snap_deps() will do it. */
|
|---|
| 2524 | if (depstr == 0)
|
|---|
| 2525 | deps = 0;
|
|---|
| 2526 | else
|
|---|
| 2527 | {
|
|---|
| 2528 | depstr = unescape_char (depstr, ':');
|
|---|
| 2529 | if (second_expansion && strchr (depstr, '$'))
|
|---|
| 2530 | {
|
|---|
| 2531 | deps = alloc_dep ();
|
|---|
| 2532 | deps->name = depstr;
|
|---|
| 2533 | deps->need_2nd_expansion = 1;
|
|---|
| 2534 | deps->staticpattern = pattern != 0;
|
|---|
| 2535 | }
|
|---|
| 2536 | else
|
|---|
| 2537 | {
|
|---|
| 2538 | deps = split_prereqs (depstr);
|
|---|
| 2539 | free (depstr);
|
|---|
| 2540 |
|
|---|
| 2541 | /* We'll enter static pattern prereqs later when we have the stem.
|
|---|
| 2542 | We don't want to enter pattern rules at all so that we don't
|
|---|
| 2543 | think that they ought to exist (make manual "Implicit Rule Search
|
|---|
| 2544 | Algorithm", item 5c). */
|
|---|
| 2545 | if (! pattern && ! implicit_percent)
|
|---|
| 2546 | deps = enter_prereqs (deps, NULL);
|
|---|
| 2547 | }
|
|---|
| 2548 | }
|
|---|
| 2549 |
|
|---|
| 2550 | /* For implicit rules, _all_ the targets must have a pattern. That means we
|
|---|
| 2551 | can test the first one to see if we're working with an implicit rule; if
|
|---|
| 2552 | so we handle it specially. */
|
|---|
| 2553 |
|
|---|
| 2554 | if (implicit_percent)
|
|---|
| 2555 | {
|
|---|
| 2556 | struct nameseq *nextf;
|
|---|
| 2557 | const char **targets, **target_pats;
|
|---|
| 2558 | unsigned int c;
|
|---|
| 2559 |
|
|---|
| 2560 | if (pattern != 0)
|
|---|
| 2561 | O (fatal, flocp, _("mixed implicit and static pattern rules"));
|
|---|
| 2562 |
|
|---|
| 2563 | /* Count the targets to create an array of target names.
|
|---|
| 2564 | We already have the first one. */
|
|---|
| 2565 | nextf = filenames->next;
|
|---|
| 2566 | free_ns (filenames);
|
|---|
| 2567 | filenames = nextf;
|
|---|
| 2568 |
|
|---|
| 2569 | for (c = 1; nextf; ++c, nextf = nextf->next)
|
|---|
| 2570 | ;
|
|---|
| 2571 | targets = xmalloc (c * sizeof (const char *));
|
|---|
| 2572 | target_pats = xmalloc (c * sizeof (const char *));
|
|---|
| 2573 |
|
|---|
| 2574 | targets[0] = name;
|
|---|
| 2575 | target_pats[0] = implicit_percent;
|
|---|
| 2576 |
|
|---|
| 2577 | c = 1;
|
|---|
| 2578 | while (filenames)
|
|---|
| 2579 | {
|
|---|
| 2580 | name = filenames->name;
|
|---|
| 2581 | implicit_percent = find_percent_cached (&name);
|
|---|
| 2582 |
|
|---|
| 2583 | if (implicit_percent == 0)
|
|---|
| 2584 | O (fatal, flocp, _("mixed implicit and normal rules"));
|
|---|
| 2585 |
|
|---|
| 2586 | targets[c] = name;
|
|---|
| 2587 | target_pats[c] = implicit_percent;
|
|---|
| 2588 | ++c;
|
|---|
| 2589 |
|
|---|
| 2590 | nextf = filenames->next;
|
|---|
| 2591 | free_ns (filenames);
|
|---|
| 2592 | filenames = nextf;
|
|---|
| 2593 | }
|
|---|
| 2594 |
|
|---|
| 2595 | create_pattern_rule (targets, target_pats, c, two_colon, deps, cmds, 1);
|
|---|
| 2596 |
|
|---|
| 2597 | return;
|
|---|
| 2598 | }
|
|---|
| 2599 |
|
|---|
| 2600 |
|
|---|
| 2601 | /* Walk through each target and create it in the database.
|
|---|
| 2602 | We already set up the first target, above. */
|
|---|
| 2603 | while (1)
|
|---|
| 2604 | {
|
|---|
| 2605 | struct nameseq *nextf = filenames->next;
|
|---|
| 2606 | struct file *f;
|
|---|
| 2607 | struct dep *this = 0;
|
|---|
| 2608 |
|
|---|
| 2609 | free_ns (filenames);
|
|---|
| 2610 |
|
|---|
| 2611 | /* Check for special targets. Do it here instead of, say, snap_deps()
|
|---|
| 2612 | so that we can immediately use the value. */
|
|---|
| 2613 | if (streq (name, ".POSIX"))
|
|---|
| 2614 | {
|
|---|
| 2615 | posix_pedantic = 1;
|
|---|
| 2616 | define_variable_cname (".SHELLFLAGS", "-ec", o_default, 0);
|
|---|
| 2617 | /* These default values are based on IEEE Std 1003.1-2008. */
|
|---|
| 2618 | define_variable_cname ("ARFLAGS", "-rv", o_default, 0);
|
|---|
| 2619 | define_variable_cname ("CC", "c99", o_default, 0);
|
|---|
| 2620 | define_variable_cname ("CFLAGS", "-O", o_default, 0);
|
|---|
| 2621 | define_variable_cname ("FC", "fort77", o_default, 0);
|
|---|
| 2622 | define_variable_cname ("FFLAGS", "-O 1", o_default, 0);
|
|---|
| 2623 | define_variable_cname ("SCCSGETFLAGS", "-s", o_default, 0);
|
|---|
| 2624 | }
|
|---|
| 2625 | else if (streq (name, ".SECONDEXPANSION"))
|
|---|
| 2626 | second_expansion = 1;
|
|---|
| 2627 | #ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
|
|---|
| 2628 | else if (streq (name, ".SECONDTARGETEXPANSION"))
|
|---|
| 2629 | second_target_expansion = 1;
|
|---|
| 2630 | #endif
|
|---|
| 2631 | #if !defined (__MSDOS__) && !defined (__EMX__)
|
|---|
| 2632 | else if (streq (name, ".ONESHELL"))
|
|---|
| 2633 | one_shell = 1;
|
|---|
| 2634 | #endif
|
|---|
| 2635 |
|
|---|
| 2636 | #ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
|
|---|
| 2637 | /* Check for the explicit multitarget mode operators. For this to be
|
|---|
| 2638 | identified as an explicit multiple target rule, the first + or +|
|
|---|
| 2639 | operator *must* appear between the first two files. If not found as
|
|---|
| 2640 | the 2nd file or if found as the 1st file, the rule will be rejected
|
|---|
| 2641 | as a potential multiple first target rule. For the subsequent files
|
|---|
| 2642 | the operator is only required to switch between maybe and non-maybe
|
|---|
| 2643 | mode:
|
|---|
| 2644 | `primary + 2nd 3rd +| 4th-maybe + 5th-for-sure: deps; cmds'
|
|---|
| 2645 |
|
|---|
| 2646 | The whole idea of the maybe-updated files is this:
|
|---|
| 2647 | timestamp +| maybe.h: src1.c src2.c
|
|---|
| 2648 | grep goes-into-maybe.h $* > timestamp
|
|---|
| 2649 | cmp timestamp maybe.h || cp -f timestamp maybe.h
|
|---|
| 2650 |
|
|---|
| 2651 | This is implemented in remake.c where we don't consider the mtime of
|
|---|
| 2652 | the maybe-updated targets. */
|
|---|
| 2653 | if (multi_mode != m_no && name[0] == '+'
|
|---|
| 2654 | && (name[1] == '\0' || (name[1] == '|' && name[2] == '\0')))
|
|---|
| 2655 | {
|
|---|
| 2656 | if (!prev_file)
|
|---|
| 2657 | multi_mode = m_no; /* first */
|
|---|
| 2658 | else
|
|---|
| 2659 | {
|
|---|
| 2660 | if (multi_mode == m_unsettled)
|
|---|
| 2661 | {
|
|---|
| 2662 | prev_file->multi_head = prev_file;
|
|---|
| 2663 |
|
|---|
| 2664 | /* Only the primary file needs the dependencies. */
|
|---|
| 2665 | if (deps)
|
|---|
| 2666 | {
|
|---|
| 2667 | free_dep_chain (deps);
|
|---|
| 2668 | deps = NULL;
|
|---|
| 2669 | }
|
|---|
| 2670 | }
|
|---|
| 2671 | multi_mode = name[1] == '\0' ? m_yes : m_yes_maybe;
|
|---|
| 2672 | goto l_next;
|
|---|
| 2673 | }
|
|---|
| 2674 | }
|
|---|
| 2675 | else if (multi_mode == m_unsettled && prev_file)
|
|---|
| 2676 | multi_mode = m_no;
|
|---|
| 2677 | #endif
|
|---|
| 2678 |
|
|---|
| 2679 | /* If this is a static pattern rule:
|
|---|
| 2680 | 'targets: target%pattern: prereq%pattern; recipe',
|
|---|
| 2681 | make sure the pattern matches this target name. */
|
|---|
| 2682 | if (pattern && !pattern_matches (pattern, pattern_percent, name))
|
|---|
| 2683 | OS (error, flocp,
|
|---|
| 2684 | _("target '%s' doesn't match the target pattern"), name);
|
|---|
| 2685 | else if (deps)
|
|---|
| 2686 | /* If there are multiple targets, copy the chain DEPS for all but the
|
|---|
| 2687 | last one. It is not safe for the same deps to go in more than one
|
|---|
| 2688 | place in the database. */
|
|---|
| 2689 | this = nextf != 0 ? copy_dep_chain (deps) : deps;
|
|---|
| 2690 |
|
|---|
| 2691 | /* Find or create an entry in the file database for this target. */
|
|---|
| 2692 | if (!two_colon)
|
|---|
| 2693 | {
|
|---|
| 2694 | /* Single-colon. Combine this rule with the file's existing record,
|
|---|
| 2695 | if any. */
|
|---|
| 2696 | #ifndef KMK
|
|---|
| 2697 | f = enter_file (strcache_add (name));
|
|---|
| 2698 | #else /* KMK - the name is already in the cache, don't waste time. */
|
|---|
| 2699 | f = enter_file (name);
|
|---|
| 2700 | #endif
|
|---|
| 2701 | if (f->double_colon)
|
|---|
| 2702 | OS (fatal, flocp,
|
|---|
| 2703 | _("target file '%s' has both : and :: entries"), f->name);
|
|---|
| 2704 |
|
|---|
| 2705 | /* If CMDS == F->CMDS, this target was listed in this rule
|
|---|
| 2706 | more than once. Just give a warning since this is harmless. */
|
|---|
| 2707 | if (cmds != 0 && cmds == f->cmds)
|
|---|
| 2708 | OS (error, flocp,
|
|---|
| 2709 | _("target '%s' given more than once in the same rule"),
|
|---|
| 2710 | f->name);
|
|---|
| 2711 |
|
|---|
| 2712 | /* Check for two single-colon entries both with commands.
|
|---|
| 2713 | Check is_target so that we don't lose on files such as .c.o
|
|---|
| 2714 | whose commands were preinitialized. */
|
|---|
| 2715 | else if (cmds != 0 && f->cmds != 0 && f->is_target)
|
|---|
| 2716 | {
|
|---|
| 2717 | size_t l = strlen (f->name);
|
|---|
| 2718 | error (&cmds->fileinfo, l,
|
|---|
| 2719 | _("warning: overriding recipe for target '%s'"),
|
|---|
| 2720 | f->name);
|
|---|
| 2721 | error (&f->cmds->fileinfo, l,
|
|---|
| 2722 | _("warning: ignoring old recipe for target '%s'"),
|
|---|
| 2723 | f->name);
|
|---|
| 2724 | }
|
|---|
| 2725 |
|
|---|
| 2726 | /* Defining .DEFAULT with no deps or cmds clears it. */
|
|---|
| 2727 | if (f == default_file && this == 0 && cmds == 0)
|
|---|
| 2728 | f->cmds = 0;
|
|---|
| 2729 | if (cmds != 0)
|
|---|
| 2730 | f->cmds = cmds;
|
|---|
| 2731 |
|
|---|
| 2732 | #ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
|
|---|
| 2733 | /* If this is an explicit multi target rule, add it to the
|
|---|
| 2734 | target chain and set the multi_maybe flag according to
|
|---|
| 2735 | the current mode. */
|
|---|
| 2736 |
|
|---|
| 2737 | if (multi_mode >= m_yes)
|
|---|
| 2738 | {
|
|---|
| 2739 | f->multi_maybe = multi_mode == m_yes_maybe;
|
|---|
| 2740 | prev_file->multi_next = f;
|
|---|
| 2741 | assert (prev_file->multi_head != 0);
|
|---|
| 2742 | f->multi_head = prev_file->multi_head;
|
|---|
| 2743 |
|
|---|
| 2744 | if (f == suffix_file)
|
|---|
| 2745 | O (error, flocp,
|
|---|
| 2746 | _(".SUFFIXES encountered in an explicit multi target rule"));
|
|---|
| 2747 | }
|
|---|
| 2748 | prev_file = f;
|
|---|
| 2749 | #endif
|
|---|
| 2750 |
|
|---|
| 2751 | /* Defining .SUFFIXES with no dependencies clears out the list of
|
|---|
| 2752 | suffixes. */
|
|---|
| 2753 | if (f == suffix_file && this == 0)
|
|---|
| 2754 | {
|
|---|
| 2755 | free_dep_chain (f->deps);
|
|---|
| 2756 | f->deps = 0;
|
|---|
| 2757 | }
|
|---|
| 2758 | }
|
|---|
| 2759 | else
|
|---|
| 2760 | {
|
|---|
| 2761 | /* Double-colon. Make a new record even if there already is one. */
|
|---|
| 2762 | #ifndef CONFIG_WITH_STRCACHE2
|
|---|
| 2763 | f = lookup_file (name);
|
|---|
| 2764 | #else /* CONFIG_WITH_STRCACHE2 - the name is already in the cache, don't waste time. */
|
|---|
| 2765 | f = lookup_file_cached (name);
|
|---|
| 2766 | #endif /* CONFIG_WITH_STRCACHE2 */
|
|---|
| 2767 |
|
|---|
| 2768 | /* Check for both : and :: rules. Check is_target so we don't lose
|
|---|
| 2769 | on default suffix rules or makefiles. */
|
|---|
| 2770 | if (f != 0 && f->is_target && !f->double_colon)
|
|---|
| 2771 | OS (fatal, flocp,
|
|---|
| 2772 | _("target file '%s' has both : and :: entries"), f->name);
|
|---|
| 2773 |
|
|---|
| 2774 | #ifndef KMK
|
|---|
| 2775 | f = enter_file (strcache_add (name));
|
|---|
| 2776 | #else /* KMK - the name is already in the cache, don't waste time. */
|
|---|
| 2777 | f = enter_file (name);
|
|---|
| 2778 | #endif
|
|---|
| 2779 | /* If there was an existing entry and it was a double-colon entry,
|
|---|
| 2780 | enter_file will have returned a new one, making it the prev
|
|---|
| 2781 | pointer of the old one, and setting its double_colon pointer to
|
|---|
| 2782 | the first one. */
|
|---|
| 2783 | if (f->double_colon == 0)
|
|---|
| 2784 | /* This is the first entry for this name, so we must set its
|
|---|
| 2785 | double_colon pointer to itself. */
|
|---|
| 2786 | f->double_colon = f;
|
|---|
| 2787 |
|
|---|
| 2788 | f->cmds = cmds;
|
|---|
| 2789 | }
|
|---|
| 2790 |
|
|---|
| 2791 | f->is_target = 1;
|
|---|
| 2792 |
|
|---|
| 2793 | /* If this is a static pattern rule, set the stem to the part of its
|
|---|
| 2794 | name that matched the '%' in the pattern, so you can use $* in the
|
|---|
| 2795 | commands. If we didn't do it before, enter the prereqs now. */
|
|---|
| 2796 | if (pattern)
|
|---|
| 2797 | {
|
|---|
| 2798 | static const char *percent = "%";
|
|---|
| 2799 | char *buffer = variable_expand ("");
|
|---|
| 2800 | const size_t buffer_offset = buffer - variable_buffer; /* bird */
|
|---|
| 2801 | char *o = patsubst_expand_pat (buffer, name, pattern, percent,
|
|---|
| 2802 | pattern_percent+1, percent+1);
|
|---|
| 2803 | buffer = variable_buffer + buffer_offset; /* bird - variable_buffer may have been reallocated. */
|
|---|
| 2804 | f->stem = strcache_add_len (buffer, o - buffer);
|
|---|
| 2805 | if (this)
|
|---|
| 2806 | {
|
|---|
| 2807 | if (! this->need_2nd_expansion)
|
|---|
| 2808 | this = enter_prereqs (this, f->stem);
|
|---|
| 2809 | else
|
|---|
| 2810 | this->stem = f->stem;
|
|---|
| 2811 | }
|
|---|
| 2812 | }
|
|---|
| 2813 |
|
|---|
| 2814 | /* Add the dependencies to this file entry. */
|
|---|
| 2815 | if (this != 0)
|
|---|
| 2816 | {
|
|---|
| 2817 | /* Add the file's old deps and the new ones in THIS together. */
|
|---|
| 2818 | if (f->deps == 0)
|
|---|
| 2819 | f->deps = this;
|
|---|
| 2820 | else if (cmds != 0)
|
|---|
| 2821 | {
|
|---|
| 2822 | struct dep *d = this;
|
|---|
| 2823 |
|
|---|
| 2824 | /* If this rule has commands, put these deps first. */
|
|---|
| 2825 | while (d->next != 0)
|
|---|
| 2826 | d = d->next;
|
|---|
| 2827 |
|
|---|
| 2828 | d->next = f->deps;
|
|---|
| 2829 | f->deps = this;
|
|---|
| 2830 | }
|
|---|
| 2831 | else
|
|---|
| 2832 | {
|
|---|
| 2833 | struct dep *d = f->deps;
|
|---|
| 2834 |
|
|---|
| 2835 | /* A rule without commands: put its prereqs at the end. */
|
|---|
| 2836 | while (d->next != 0)
|
|---|
| 2837 | d = d->next;
|
|---|
| 2838 |
|
|---|
| 2839 | d->next = this;
|
|---|
| 2840 | }
|
|---|
| 2841 | }
|
|---|
| 2842 |
|
|---|
| 2843 | name = f->name;
|
|---|
| 2844 |
|
|---|
| 2845 | #ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
|
|---|
| 2846 | l_next:
|
|---|
| 2847 | #endif
|
|---|
| 2848 | /* All done! Set up for the next one. */
|
|---|
| 2849 | if (nextf == 0)
|
|---|
| 2850 | break;
|
|---|
| 2851 |
|
|---|
| 2852 | filenames = nextf;
|
|---|
| 2853 |
|
|---|
| 2854 | /* Reduce escaped percents. If there are any unescaped it's an error */
|
|---|
| 2855 | name = filenames->name;
|
|---|
| 2856 | if (find_percent_cached (&name))
|
|---|
| 2857 | O (error, flocp,
|
|---|
| 2858 | _("*** mixed implicit and normal rules: deprecated syntax"));
|
|---|
| 2859 | }
|
|---|
| 2860 | }
|
|---|
| 2861 | |
|---|
| 2862 |
|
|---|
| 2863 | /* Search STRING for an unquoted STOPCHAR or blank (if BLANK is nonzero).
|
|---|
| 2864 | Backslashes quote STOPCHAR, blanks if BLANK is nonzero, and backslash.
|
|---|
| 2865 | Quoting backslashes are removed from STRING by compacting it into
|
|---|
| 2866 | itself. Returns a pointer to the first unquoted STOPCHAR if there is
|
|---|
| 2867 | one, or nil if there are none. STOPCHARs inside variable references are
|
|---|
| 2868 | ignored if IGNOREVARS is true.
|
|---|
| 2869 |
|
|---|
| 2870 | STOPCHAR _cannot_ be '$' if IGNOREVARS is true. */
|
|---|
| 2871 |
|
|---|
| 2872 | static char *
|
|---|
| 2873 | find_char_unquote (char *string, int map IF_WITH_VALUE_LENGTH_PARAM(unsigned int string_len))
|
|---|
| 2874 | {
|
|---|
| 2875 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2876 | unsigned int string_len = 0;
|
|---|
| 2877 | #endif
|
|---|
| 2878 | char *p = string;
|
|---|
| 2879 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2880 | assert (string_len == 0 || string_len == strlen (string));
|
|---|
| 2881 | #endif
|
|---|
| 2882 |
|
|---|
| 2883 | /* Always stop on NUL. */
|
|---|
| 2884 | map |= MAP_NUL;
|
|---|
| 2885 |
|
|---|
| 2886 | while (1)
|
|---|
| 2887 | {
|
|---|
| 2888 | while (! STOP_SET (*p, map))
|
|---|
| 2889 | ++p;
|
|---|
| 2890 |
|
|---|
| 2891 | if (*p == '\0')
|
|---|
| 2892 | break;
|
|---|
| 2893 |
|
|---|
| 2894 | /* If we stopped due to a variable reference, skip over its contents. */
|
|---|
| 2895 | if (STOP_SET (*p, MAP_VARIABLE))
|
|---|
| 2896 | {
|
|---|
| 2897 | char openparen = p[1];
|
|---|
| 2898 |
|
|---|
| 2899 | /* Check if '$' is the last character in the string. */
|
|---|
| 2900 | if (openparen == '\0')
|
|---|
| 2901 | break;
|
|---|
| 2902 |
|
|---|
| 2903 | p += 2;
|
|---|
| 2904 |
|
|---|
| 2905 | /* Skip the contents of a non-quoted, multi-char variable ref. */
|
|---|
| 2906 | if (openparen == '(' || openparen == '{')
|
|---|
| 2907 | {
|
|---|
| 2908 | unsigned int pcount = 1;
|
|---|
| 2909 | char closeparen = (openparen == '(' ? ')' : '}');
|
|---|
| 2910 | char ch; /* bird */
|
|---|
| 2911 |
|
|---|
| 2912 | while ((ch = *p))
|
|---|
| 2913 | {
|
|---|
| 2914 | if (ch == openparen)
|
|---|
| 2915 | ++pcount;
|
|---|
| 2916 | else if (ch == closeparen)
|
|---|
| 2917 | if (--pcount == 0)
|
|---|
| 2918 | {
|
|---|
| 2919 | ++p;
|
|---|
| 2920 | break;
|
|---|
| 2921 | }
|
|---|
| 2922 | ++p;
|
|---|
| 2923 | }
|
|---|
| 2924 | }
|
|---|
| 2925 |
|
|---|
| 2926 | /* Skipped the variable reference: look for STOPCHARS again. */
|
|---|
| 2927 | continue;
|
|---|
| 2928 | }
|
|---|
| 2929 |
|
|---|
| 2930 | if (p > string && p[-1] == '\\')
|
|---|
| 2931 | {
|
|---|
| 2932 | /* Search for more backslashes. */
|
|---|
| 2933 | int i = -2;
|
|---|
| 2934 | while (&p[i] >= string && p[i] == '\\')
|
|---|
| 2935 | --i;
|
|---|
| 2936 | ++i;
|
|---|
| 2937 | /* Only compute the length if really needed. */
|
|---|
| 2938 | if (string_len == 0)
|
|---|
| 2939 | string_len = strlen (string);
|
|---|
| 2940 | /* The number of backslashes is now -I.
|
|---|
| 2941 | Copy P over itself to swallow half of them. */
|
|---|
| 2942 | memmove (&p[i], &p[i/2], (string_len - (p - string)) - (i/2) + 1);
|
|---|
| 2943 | p += i/2;
|
|---|
| 2944 | if (i % 2 == 0)
|
|---|
| 2945 | /* All the backslashes quoted each other; the STOPCHAR was
|
|---|
| 2946 | unquoted. */
|
|---|
| 2947 | return p;
|
|---|
| 2948 |
|
|---|
| 2949 | /* The STOPCHAR was quoted by a backslash. Look for another. */
|
|---|
| 2950 | }
|
|---|
| 2951 | else
|
|---|
| 2952 | /* No backslash in sight. */
|
|---|
| 2953 | return p;
|
|---|
| 2954 | }
|
|---|
| 2955 |
|
|---|
| 2956 | /* Never hit a STOPCHAR or blank (with BLANK nonzero). */
|
|---|
| 2957 | return 0;
|
|---|
| 2958 | }
|
|---|
| 2959 |
|
|---|
| 2960 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 2961 | /* Special case version of find_char_unquote that only takes stop character.
|
|---|
| 2962 | This is so common that it makes a lot of sense to specialize this. */
|
|---|
| 2963 |
|
|---|
| 2964 | K_INLINE char *
|
|---|
| 2965 | find_char_unquote_0 (char *string, int stop1, int map, char **eosp)
|
|---|
| 2966 | {
|
|---|
| 2967 | unsigned int string_len = *eosp - string;
|
|---|
| 2968 | char *p;
|
|---|
| 2969 |
|
|---|
| 2970 | assert (strlen (string) == string_len);
|
|---|
| 2971 | assert (!(map & MAP_VARIABLE) && map != 0);
|
|---|
| 2972 | assert ((stopchar_map[(unsigned char)stop1] & map) == map);
|
|---|
| 2973 |
|
|---|
| 2974 | p = (char *)memchr (string, stop1, string_len);
|
|---|
| 2975 | if (!p)
|
|---|
| 2976 | return NULL;
|
|---|
| 2977 | if (p <= string || p[-1] != '\\')
|
|---|
| 2978 | return p;
|
|---|
| 2979 |
|
|---|
| 2980 | p = find_char_unquote (string, map, string_len);
|
|---|
| 2981 | *eosp = memchr (string, '\0', string_len);
|
|---|
| 2982 | return p;
|
|---|
| 2983 | }
|
|---|
| 2984 | #endif
|
|---|
| 2985 |
|
|---|
| 2986 | /* Unescape a character in a string. The string is compressed onto itself. */
|
|---|
| 2987 |
|
|---|
| 2988 | static char *
|
|---|
| 2989 | unescape_char (char *string, int c)
|
|---|
| 2990 | {
|
|---|
| 2991 | char *p = string;
|
|---|
| 2992 | char *s = string;
|
|---|
| 2993 |
|
|---|
| 2994 | while (*s != '\0')
|
|---|
| 2995 | {
|
|---|
| 2996 | if (*s == '\\')
|
|---|
| 2997 | {
|
|---|
| 2998 | char *e = s;
|
|---|
| 2999 | int l;
|
|---|
| 3000 |
|
|---|
| 3001 | /* We found a backslash. See if it's escaping our character. */
|
|---|
| 3002 | while (*e == '\\')
|
|---|
| 3003 | ++e;
|
|---|
| 3004 | l = e - s;
|
|---|
| 3005 |
|
|---|
| 3006 | if (*e != c || l%2 == 0)
|
|---|
| 3007 | {
|
|---|
| 3008 | /* It's not; just take it all without unescaping. */
|
|---|
| 3009 | memmove (p, s, l);
|
|---|
| 3010 | p += l;
|
|---|
| 3011 |
|
|---|
| 3012 | // If we hit the end of the string, we're done
|
|---|
| 3013 | if (*e == '\0')
|
|---|
| 3014 | break;
|
|---|
| 3015 | }
|
|---|
| 3016 | else if (l > 1)
|
|---|
| 3017 | {
|
|---|
| 3018 | /* It is, and there's >1 backslash. Take half of them. */
|
|---|
| 3019 | l /= 2;
|
|---|
| 3020 | memmove (p, s, l);
|
|---|
| 3021 | p += l;
|
|---|
| 3022 | }
|
|---|
| 3023 |
|
|---|
| 3024 | s = e;
|
|---|
| 3025 | }
|
|---|
| 3026 |
|
|---|
| 3027 | *(p++) = *(s++);
|
|---|
| 3028 | }
|
|---|
| 3029 |
|
|---|
| 3030 | *p = '\0';
|
|---|
| 3031 | return string;
|
|---|
| 3032 | }
|
|---|
| 3033 |
|
|---|
| 3034 | /* Search PATTERN for an unquoted % and handle quoting. */
|
|---|
| 3035 |
|
|---|
| 3036 | char *
|
|---|
| 3037 | find_percent (char *pattern)
|
|---|
| 3038 | {
|
|---|
| 3039 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3040 | return find_char_unquote (pattern, MAP_PERCENT);
|
|---|
| 3041 | #else
|
|---|
| 3042 | char *eos = strchr(pattern, '\0');
|
|---|
| 3043 | return find_char_unquote_0 (pattern, '%', MAP_PERCENT, &eos);
|
|---|
| 3044 | #endif
|
|---|
| 3045 | }
|
|---|
| 3046 |
|
|---|
| 3047 | /* Search STRING for an unquoted % and handle quoting. Returns a pointer to
|
|---|
| 3048 | the % or NULL if no % was found.
|
|---|
| 3049 | This version is used with strings in the string cache: if there's a need to
|
|---|
| 3050 | modify the string a new version will be added to the string cache and
|
|---|
| 3051 | *STRING will be set to that. */
|
|---|
| 3052 |
|
|---|
| 3053 | const char *
|
|---|
| 3054 | find_percent_cached (const char **string)
|
|---|
| 3055 | {
|
|---|
| 3056 | const char *p = *string;
|
|---|
| 3057 | char *new = 0;
|
|---|
| 3058 | int slen = 0;
|
|---|
| 3059 |
|
|---|
| 3060 | /* If the first char is a % return now. This lets us avoid extra tests
|
|---|
| 3061 | inside the loop. */
|
|---|
| 3062 | if (*p == '%')
|
|---|
| 3063 | return p;
|
|---|
| 3064 |
|
|---|
| 3065 | while (1)
|
|---|
| 3066 | {
|
|---|
| 3067 | while (! STOP_SET (*p, MAP_PERCENT|MAP_NUL))
|
|---|
| 3068 | ++p;
|
|---|
| 3069 |
|
|---|
| 3070 | if (*p == '\0')
|
|---|
| 3071 | break;
|
|---|
| 3072 |
|
|---|
| 3073 | /* See if this % is escaped with a backslash; if not we're done. */
|
|---|
| 3074 | if (p[-1] != '\\')
|
|---|
| 3075 | break;
|
|---|
| 3076 |
|
|---|
| 3077 | {
|
|---|
| 3078 | /* Search for more backslashes. */
|
|---|
| 3079 | char *pv;
|
|---|
| 3080 | int i = -2;
|
|---|
| 3081 |
|
|---|
| 3082 | while (&p[i] >= *string && p[i] == '\\')
|
|---|
| 3083 | --i;
|
|---|
| 3084 | ++i;
|
|---|
| 3085 |
|
|---|
| 3086 | /* At this point we know we'll need to allocate a new string.
|
|---|
| 3087 | Make a copy if we haven't yet done so. */
|
|---|
| 3088 | if (! new)
|
|---|
| 3089 | {
|
|---|
| 3090 | slen = strlen (*string);
|
|---|
| 3091 | new = alloca (slen + 1);
|
|---|
| 3092 | memcpy (new, *string, slen + 1);
|
|---|
| 3093 | p = new + (p - *string);
|
|---|
| 3094 | *string = new;
|
|---|
| 3095 | }
|
|---|
| 3096 |
|
|---|
| 3097 | /* At this point *string, p, and new all point into the same string.
|
|---|
| 3098 | Get a non-const version of p so we can modify new. */
|
|---|
| 3099 | pv = new + (p - *string);
|
|---|
| 3100 |
|
|---|
| 3101 | /* The number of backslashes is now -I.
|
|---|
| 3102 | Copy P over itself to swallow half of them. */
|
|---|
| 3103 | memmove (&pv[i], &pv[i/2], (slen - (pv - new)) - (i/2) + 1);
|
|---|
| 3104 | p += i/2;
|
|---|
| 3105 |
|
|---|
| 3106 | /* If the backslashes quoted each other; the % was unquoted. */
|
|---|
| 3107 | if (i % 2 == 0)
|
|---|
| 3108 | break;
|
|---|
| 3109 | }
|
|---|
| 3110 | }
|
|---|
| 3111 |
|
|---|
| 3112 | /* If we had to change STRING, add it to the strcache. */
|
|---|
| 3113 | if (new)
|
|---|
| 3114 | {
|
|---|
| 3115 | *string = strcache_add (*string);
|
|---|
| 3116 | p = *string + (p - new);
|
|---|
| 3117 | }
|
|---|
| 3118 |
|
|---|
| 3119 | /* If we didn't find a %, return NULL. Otherwise return a ptr to it. */
|
|---|
| 3120 | return (*p == '\0') ? NULL : p;
|
|---|
| 3121 | }
|
|---|
| 3122 | |
|---|
| 3123 |
|
|---|
| 3124 | /* Find the next line of text in an eval buffer, combining continuation lines
|
|---|
| 3125 | into one line.
|
|---|
| 3126 | Return the number of actual lines read (> 1 if continuation lines).
|
|---|
| 3127 | Returns -1 if there's nothing left in the buffer.
|
|---|
| 3128 |
|
|---|
| 3129 | After this function, ebuf->buffer points to the first character of the
|
|---|
| 3130 | line we just found.
|
|---|
| 3131 | */
|
|---|
| 3132 |
|
|---|
| 3133 | /* Read a line of text from a STRING.
|
|---|
| 3134 | Since we aren't really reading from a file, don't bother with linenumbers.
|
|---|
| 3135 | */
|
|---|
| 3136 |
|
|---|
| 3137 | static long
|
|---|
| 3138 | readstring (struct ebuffer *ebuf)
|
|---|
| 3139 | {
|
|---|
| 3140 | char *eol;
|
|---|
| 3141 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3142 | char *end;
|
|---|
| 3143 | #endif
|
|---|
| 3144 |
|
|---|
| 3145 | /* If there is nothing left in this buffer, return 0. */
|
|---|
| 3146 | if (ebuf->bufnext >= ebuf->bufstart + ebuf->size)
|
|---|
| 3147 | return -1;
|
|---|
| 3148 |
|
|---|
| 3149 | /* Set up a new starting point for the buffer, and find the end of the
|
|---|
| 3150 | next logical line (taking into account backslash/newline pairs). */
|
|---|
| 3151 |
|
|---|
| 3152 | eol = ebuf->buffer = ebuf->bufnext;
|
|---|
| 3153 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3154 | end = ebuf->bufstart + ebuf->size;
|
|---|
| 3155 | #endif
|
|---|
| 3156 |
|
|---|
| 3157 | while (1)
|
|---|
| 3158 | {
|
|---|
| 3159 | int backslash = 0;
|
|---|
| 3160 | const char *bol = eol;
|
|---|
| 3161 | const char *p;
|
|---|
| 3162 |
|
|---|
| 3163 | /* Find the next newline. At EOS, stop. */
|
|---|
| 3164 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3165 | p = eol = strchr (eol , '\n');
|
|---|
| 3166 | #else
|
|---|
| 3167 | p = (char *)memchr (eol, '\n', end - eol);
|
|---|
| 3168 | assert (!memchr (eol, '\0', p != 0 ? p - eol : end - eol));
|
|---|
| 3169 | eol = (char *)p;
|
|---|
| 3170 | #endif
|
|---|
| 3171 | if (!eol)
|
|---|
| 3172 | {
|
|---|
| 3173 | ebuf->bufnext = ebuf->bufstart + ebuf->size + 1;
|
|---|
| 3174 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3175 | ebuf->eol = end;
|
|---|
| 3176 | #endif
|
|---|
| 3177 | return 0;
|
|---|
| 3178 | }
|
|---|
| 3179 |
|
|---|
| 3180 | /* Found a newline; if it's escaped continue; else we're done. */
|
|---|
| 3181 | while (p > bol && *(--p) == '\\')
|
|---|
| 3182 | backslash = !backslash;
|
|---|
| 3183 | if (!backslash)
|
|---|
| 3184 | break;
|
|---|
| 3185 | ++eol;
|
|---|
| 3186 | }
|
|---|
| 3187 |
|
|---|
| 3188 | /* Overwrite the newline char. */
|
|---|
| 3189 | *eol = '\0';
|
|---|
| 3190 | ebuf->bufnext = eol+1;
|
|---|
| 3191 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3192 | ebuf->eol = eol;
|
|---|
| 3193 | #endif
|
|---|
| 3194 |
|
|---|
| 3195 | return 0;
|
|---|
| 3196 | }
|
|---|
| 3197 |
|
|---|
| 3198 | static long
|
|---|
| 3199 | readline (struct ebuffer *ebuf)
|
|---|
| 3200 | {
|
|---|
| 3201 | char *p;
|
|---|
| 3202 | char *end;
|
|---|
| 3203 | char *start;
|
|---|
| 3204 | long nlines = 0;
|
|---|
| 3205 |
|
|---|
| 3206 | /* The behaviors between string and stream buffers are different enough to
|
|---|
| 3207 | warrant different functions. Do the Right Thing. */
|
|---|
| 3208 |
|
|---|
| 3209 | if (!ebuf->fp)
|
|---|
| 3210 | return readstring (ebuf);
|
|---|
| 3211 |
|
|---|
| 3212 | /* When reading from a file, we always start over at the beginning of the
|
|---|
| 3213 | buffer for each new line. */
|
|---|
| 3214 |
|
|---|
| 3215 | p = start = ebuf->bufstart;
|
|---|
| 3216 | end = p + ebuf->size;
|
|---|
| 3217 | *p = '\0';
|
|---|
| 3218 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3219 | ebuf->eol = p;
|
|---|
| 3220 | #endif
|
|---|
| 3221 |
|
|---|
| 3222 | while (fgets (p, end - p, ebuf->fp) != 0)
|
|---|
| 3223 | {
|
|---|
| 3224 | char *p2;
|
|---|
| 3225 | unsigned long len;
|
|---|
| 3226 | int backslash;
|
|---|
| 3227 |
|
|---|
| 3228 | len = strlen (p);
|
|---|
| 3229 | if (len == 0)
|
|---|
| 3230 | {
|
|---|
| 3231 | /* This only happens when the first thing on the line is a '\0'.
|
|---|
| 3232 | It is a pretty hopeless case, but (wonder of wonders) Athena
|
|---|
| 3233 | lossage strikes again! (xmkmf puts NULs in its makefiles.)
|
|---|
| 3234 | There is nothing really to be done; we synthesize a newline so
|
|---|
| 3235 | the following line doesn't appear to be part of this line. */
|
|---|
| 3236 | O (error, &ebuf->floc,
|
|---|
| 3237 | _("warning: NUL character seen; rest of line ignored"));
|
|---|
| 3238 | p[0] = '\n';
|
|---|
| 3239 | len = 1;
|
|---|
| 3240 | }
|
|---|
| 3241 |
|
|---|
| 3242 | /* Jump past the text we just read. */
|
|---|
| 3243 | p += len;
|
|---|
| 3244 |
|
|---|
| 3245 | /* If the last char isn't a newline, the whole line didn't fit into the
|
|---|
| 3246 | buffer. Get some more buffer and try again. */
|
|---|
| 3247 | if (p[-1] != '\n')
|
|---|
| 3248 | goto more_buffer;
|
|---|
| 3249 |
|
|---|
| 3250 | /* We got a newline, so add one to the count of lines. */
|
|---|
| 3251 | ++nlines;
|
|---|
| 3252 |
|
|---|
| 3253 | #if !defined(WINDOWS32) && !defined(__MSDOS__) && !defined(__EMX__)
|
|---|
| 3254 | /* Check to see if the line was really ended with CRLF; if so ignore
|
|---|
| 3255 | the CR. */
|
|---|
| 3256 | if ((p - start) > 1 && p[-2] == '\r')
|
|---|
| 3257 | {
|
|---|
| 3258 | --p;
|
|---|
| 3259 | memmove (p-1, p, strlen (p) + 1);
|
|---|
| 3260 | }
|
|---|
| 3261 | #endif
|
|---|
| 3262 |
|
|---|
| 3263 | backslash = 0;
|
|---|
| 3264 | for (p2 = p - 2; p2 >= start; --p2)
|
|---|
| 3265 | {
|
|---|
| 3266 | if (*p2 != '\\')
|
|---|
| 3267 | break;
|
|---|
| 3268 | backslash = !backslash;
|
|---|
| 3269 | }
|
|---|
| 3270 |
|
|---|
| 3271 | if (!backslash)
|
|---|
| 3272 | {
|
|---|
| 3273 | p[-1] = '\0';
|
|---|
| 3274 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3275 | ebuf->eol = p - 1;
|
|---|
| 3276 | #endif
|
|---|
| 3277 | break;
|
|---|
| 3278 | }
|
|---|
| 3279 |
|
|---|
| 3280 | /* It was a backslash/newline combo. If we have more space, read
|
|---|
| 3281 | another line. */
|
|---|
| 3282 | if (end - p >= 80)
|
|---|
| 3283 | {
|
|---|
| 3284 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3285 | ebuf->eol = p;
|
|---|
| 3286 | #endif
|
|---|
| 3287 | continue;
|
|---|
| 3288 | }
|
|---|
| 3289 |
|
|---|
| 3290 | /* We need more space at the end of our buffer, so realloc it.
|
|---|
| 3291 | Make sure to preserve the current offset of p. */
|
|---|
| 3292 | more_buffer:
|
|---|
| 3293 | {
|
|---|
| 3294 | unsigned long off = p - start;
|
|---|
| 3295 | ebuf->size *= 2;
|
|---|
| 3296 | start = ebuf->buffer = ebuf->bufstart = xrealloc (start, ebuf->size);
|
|---|
| 3297 | p = start + off;
|
|---|
| 3298 | end = start + ebuf->size;
|
|---|
| 3299 | *p = '\0';
|
|---|
| 3300 | #ifdef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3301 | ebuf->eol = p;
|
|---|
| 3302 | #endif
|
|---|
| 3303 | }
|
|---|
| 3304 | }
|
|---|
| 3305 |
|
|---|
| 3306 | if (ferror (ebuf->fp))
|
|---|
| 3307 | pfatal_with_name (ebuf->floc.filenm);
|
|---|
| 3308 |
|
|---|
| 3309 | /* If we found some lines, return how many.
|
|---|
| 3310 | If we didn't, but we did find _something_, that indicates we read the last
|
|---|
| 3311 | line of a file with no final newline; return 1.
|
|---|
| 3312 | If we read nothing, we're at EOF; return -1. */
|
|---|
| 3313 |
|
|---|
| 3314 | return nlines ? nlines : p == ebuf->bufstart ? -1 : 1;
|
|---|
| 3315 | }
|
|---|
| 3316 | |
|---|
| 3317 |
|
|---|
| 3318 | /* Parse the next "makefile word" from the input buffer, and return info
|
|---|
| 3319 | about it.
|
|---|
| 3320 |
|
|---|
| 3321 | A "makefile word" is one of:
|
|---|
| 3322 |
|
|---|
| 3323 | w_bogus Should never happen
|
|---|
| 3324 | w_eol End of input
|
|---|
| 3325 | w_static A static word; cannot be expanded
|
|---|
| 3326 | w_variable A word containing one or more variables/functions
|
|---|
| 3327 | w_colon A colon
|
|---|
| 3328 | w_dcolon A double-colon
|
|---|
| 3329 | w_semicolon A semicolon
|
|---|
| 3330 | w_varassign A variable assignment operator (=, :=, ::=, +=, >=, ?=, or !=)
|
|---|
| 3331 |
|
|---|
| 3332 | Note that this function is only used when reading certain parts of the
|
|---|
| 3333 | makefile. Don't use it where special rules hold sway (RHS of a variable,
|
|---|
| 3334 | in a command list, etc.) */
|
|---|
| 3335 |
|
|---|
| 3336 | static enum make_word_type
|
|---|
| 3337 | get_next_mword (char *buffer, char *delim, char **startp, unsigned int *length)
|
|---|
| 3338 | {
|
|---|
| 3339 | enum make_word_type wtype = w_bogus;
|
|---|
| 3340 | char *p = buffer, *beg;
|
|---|
| 3341 | char c;
|
|---|
| 3342 |
|
|---|
| 3343 | /* Skip any leading whitespace. */
|
|---|
| 3344 | while (ISBLANK (*p))
|
|---|
| 3345 | ++p;
|
|---|
| 3346 |
|
|---|
| 3347 | beg = p;
|
|---|
| 3348 | c = *(p++);
|
|---|
| 3349 | switch (c)
|
|---|
| 3350 | {
|
|---|
| 3351 | case '\0':
|
|---|
| 3352 | wtype = w_eol;
|
|---|
| 3353 | break;
|
|---|
| 3354 |
|
|---|
| 3355 | case ';':
|
|---|
| 3356 | wtype = w_semicolon;
|
|---|
| 3357 | break;
|
|---|
| 3358 |
|
|---|
| 3359 | case '=':
|
|---|
| 3360 | wtype = w_varassign;
|
|---|
| 3361 | break;
|
|---|
| 3362 |
|
|---|
| 3363 | case ':':
|
|---|
| 3364 | wtype = w_colon;
|
|---|
| 3365 | switch (*p)
|
|---|
| 3366 | {
|
|---|
| 3367 | case ':':
|
|---|
| 3368 | ++p;
|
|---|
| 3369 | if (p[1] != '=')
|
|---|
| 3370 | wtype = w_dcolon;
|
|---|
| 3371 | else
|
|---|
| 3372 | {
|
|---|
| 3373 | wtype = w_varassign;
|
|---|
| 3374 | ++p;
|
|---|
| 3375 | }
|
|---|
| 3376 | break;
|
|---|
| 3377 |
|
|---|
| 3378 | case '=':
|
|---|
| 3379 | ++p;
|
|---|
| 3380 | wtype = w_varassign;
|
|---|
| 3381 | break;
|
|---|
| 3382 | }
|
|---|
| 3383 | break;
|
|---|
| 3384 |
|
|---|
| 3385 | case '+':
|
|---|
| 3386 | case '?':
|
|---|
| 3387 | case '!':
|
|---|
| 3388 | #ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
|
|---|
| 3389 | case '>':
|
|---|
| 3390 | #endif
|
|---|
| 3391 | if (*p == '=')
|
|---|
| 3392 | {
|
|---|
| 3393 | ++p;
|
|---|
| 3394 | wtype = w_varassign;
|
|---|
| 3395 | break;
|
|---|
| 3396 | }
|
|---|
| 3397 | /* fall thru */
|
|---|
| 3398 |
|
|---|
| 3399 | default:
|
|---|
| 3400 | if (delim && strchr (delim, c))
|
|---|
| 3401 | wtype = w_static;
|
|---|
| 3402 | break;
|
|---|
| 3403 | }
|
|---|
| 3404 |
|
|---|
| 3405 | /* Did we find something? If so, return now. */
|
|---|
| 3406 | if (wtype != w_bogus)
|
|---|
| 3407 | goto done;
|
|---|
| 3408 |
|
|---|
| 3409 | /* This is some non-operator word. A word consists of the longest
|
|---|
| 3410 | string of characters that doesn't contain whitespace, one of [:=#],
|
|---|
| 3411 | or [?+!]=, or one of the chars in the DELIM string. */
|
|---|
| 3412 |
|
|---|
| 3413 | /* We start out assuming a static word; if we see a variable we'll
|
|---|
| 3414 | adjust our assumptions then. */
|
|---|
| 3415 | wtype = w_static;
|
|---|
| 3416 |
|
|---|
| 3417 | /* We already found the first value of "c", above. */
|
|---|
| 3418 | while (1)
|
|---|
| 3419 | {
|
|---|
| 3420 | char closeparen;
|
|---|
| 3421 | int count;
|
|---|
| 3422 |
|
|---|
| 3423 | switch (c)
|
|---|
| 3424 | {
|
|---|
| 3425 | case '\0':
|
|---|
| 3426 | case ' ':
|
|---|
| 3427 | case '\t':
|
|---|
| 3428 | case '=':
|
|---|
| 3429 | goto done_word;
|
|---|
| 3430 |
|
|---|
| 3431 | case ':':
|
|---|
| 3432 | #ifdef HAVE_DOS_PATHS
|
|---|
| 3433 | /* A word CAN include a colon in its drive spec. The drive
|
|---|
| 3434 | spec is allowed either at the beginning of a word, or as part
|
|---|
| 3435 | of the archive member name, like in "libfoo.a(d:/foo/bar.o)". */
|
|---|
| 3436 | if (!(p - beg >= 2
|
|---|
| 3437 | && (*p == '/' || *p == '\\') && isalpha ((unsigned char)p[-2])
|
|---|
| 3438 | && (p - beg == 2 || p[-3] == '(')))
|
|---|
| 3439 | #endif
|
|---|
| 3440 | goto done_word;
|
|---|
| 3441 |
|
|---|
| 3442 | case '$':
|
|---|
| 3443 | c = *(p++);
|
|---|
| 3444 | if (c == '$')
|
|---|
| 3445 | break;
|
|---|
| 3446 | if (c == '\0')
|
|---|
| 3447 | goto done_word;
|
|---|
| 3448 |
|
|---|
| 3449 | /* This is a variable reference, so note that it's expandable.
|
|---|
| 3450 | Then read it to the matching close paren. */
|
|---|
| 3451 | wtype = w_variable;
|
|---|
| 3452 |
|
|---|
| 3453 | if (c == '(')
|
|---|
| 3454 | closeparen = ')';
|
|---|
| 3455 | else if (c == '{')
|
|---|
| 3456 | closeparen = '}';
|
|---|
| 3457 | else
|
|---|
| 3458 | /* This is a single-letter variable reference. */
|
|---|
| 3459 | break;
|
|---|
| 3460 |
|
|---|
| 3461 | for (count=0; *p != '\0'; ++p)
|
|---|
| 3462 | {
|
|---|
| 3463 | if (*p == c)
|
|---|
| 3464 | ++count;
|
|---|
| 3465 | else if (*p == closeparen && --count < 0)
|
|---|
| 3466 | {
|
|---|
| 3467 | ++p;
|
|---|
| 3468 | break;
|
|---|
| 3469 | }
|
|---|
| 3470 | }
|
|---|
| 3471 | break;
|
|---|
| 3472 |
|
|---|
| 3473 | case '?':
|
|---|
| 3474 | case '+':
|
|---|
| 3475 | #ifdef CONFIG_WITH_PREPEND_ASSIGNMENT
|
|---|
| 3476 | case '>':
|
|---|
| 3477 | #endif
|
|---|
| 3478 | if (*p == '=')
|
|---|
| 3479 | goto done_word;
|
|---|
| 3480 | break;
|
|---|
| 3481 |
|
|---|
| 3482 | case '\\':
|
|---|
| 3483 | switch (*p)
|
|---|
| 3484 | {
|
|---|
| 3485 | case ':':
|
|---|
| 3486 | case ';':
|
|---|
| 3487 | case '=':
|
|---|
| 3488 | case '\\':
|
|---|
| 3489 | ++p;
|
|---|
| 3490 | break;
|
|---|
| 3491 | }
|
|---|
| 3492 | break;
|
|---|
| 3493 |
|
|---|
| 3494 | default:
|
|---|
| 3495 | if (delim && strchr (delim, c))
|
|---|
| 3496 | goto done_word;
|
|---|
| 3497 | break;
|
|---|
| 3498 | }
|
|---|
| 3499 |
|
|---|
| 3500 | c = *(p++);
|
|---|
| 3501 | }
|
|---|
| 3502 | done_word:
|
|---|
| 3503 | --p;
|
|---|
| 3504 |
|
|---|
| 3505 | done:
|
|---|
| 3506 | if (startp)
|
|---|
| 3507 | *startp = beg;
|
|---|
| 3508 | if (length)
|
|---|
| 3509 | *length = p - beg;
|
|---|
| 3510 | return wtype;
|
|---|
| 3511 | }
|
|---|
| 3512 | |
|---|
| 3513 |
|
|---|
| 3514 | /* Construct the list of include directories
|
|---|
| 3515 | from the arguments and the default list. */
|
|---|
| 3516 |
|
|---|
| 3517 | void
|
|---|
| 3518 | construct_include_path (const char **arg_dirs)
|
|---|
| 3519 | {
|
|---|
| 3520 | #ifdef VAXC /* just don't ask ... */
|
|---|
| 3521 | stat_t stbuf;
|
|---|
| 3522 | #else
|
|---|
| 3523 | struct stat stbuf;
|
|---|
| 3524 | #endif
|
|---|
| 3525 | const char **dirs;
|
|---|
| 3526 | const char **cpp;
|
|---|
| 3527 | unsigned int idx;
|
|---|
| 3528 |
|
|---|
| 3529 | /* Compute the number of pointers we need in the table. */
|
|---|
| 3530 | idx = sizeof (default_include_directories) / sizeof (const char *);
|
|---|
| 3531 | if (arg_dirs)
|
|---|
| 3532 | for (cpp = arg_dirs; *cpp != 0; ++cpp)
|
|---|
| 3533 | ++idx;
|
|---|
| 3534 |
|
|---|
| 3535 | #ifdef __MSDOS__
|
|---|
| 3536 | /* Add one for $DJDIR. */
|
|---|
| 3537 | ++idx;
|
|---|
| 3538 | #endif
|
|---|
| 3539 | #ifdef KMK
|
|---|
| 3540 | /* Add one for the kBuild directory. */
|
|---|
| 3541 | ++idx;
|
|---|
| 3542 | #endif
|
|---|
| 3543 |
|
|---|
| 3544 | dirs = xmalloc (idx * sizeof (const char *));
|
|---|
| 3545 |
|
|---|
| 3546 | idx = 0;
|
|---|
| 3547 | max_incl_len = 0;
|
|---|
| 3548 |
|
|---|
| 3549 | /* First consider any dirs specified with -I switches.
|
|---|
| 3550 | Ignore any that don't exist. Remember the maximum string length. */
|
|---|
| 3551 |
|
|---|
| 3552 | if (arg_dirs)
|
|---|
| 3553 | while (*arg_dirs != 0)
|
|---|
| 3554 | {
|
|---|
| 3555 | const char *dir = *(arg_dirs++);
|
|---|
| 3556 | char *expanded = 0;
|
|---|
| 3557 | int e;
|
|---|
| 3558 |
|
|---|
| 3559 | if (dir[0] == '~')
|
|---|
| 3560 | {
|
|---|
| 3561 | expanded = tilde_expand (dir);
|
|---|
| 3562 | if (expanded != 0)
|
|---|
| 3563 | dir = expanded;
|
|---|
| 3564 | }
|
|---|
| 3565 |
|
|---|
| 3566 | EINTRLOOP (e, stat (dir, &stbuf));
|
|---|
| 3567 | if (e == 0 && S_ISDIR (stbuf.st_mode))
|
|---|
| 3568 | {
|
|---|
| 3569 | unsigned int len = strlen (dir);
|
|---|
| 3570 | /* If dir name is written with trailing slashes, discard them. */
|
|---|
| 3571 | while (len > 1 && dir[len - 1] == '/')
|
|---|
| 3572 | --len;
|
|---|
| 3573 | if (len > max_incl_len)
|
|---|
| 3574 | max_incl_len = len;
|
|---|
| 3575 | dirs[idx++] = strcache_add_len (dir, len);
|
|---|
| 3576 | }
|
|---|
| 3577 |
|
|---|
| 3578 | free (expanded);
|
|---|
| 3579 | }
|
|---|
| 3580 |
|
|---|
| 3581 | /* Now add the standard default dirs at the end. */
|
|---|
| 3582 |
|
|---|
| 3583 | #ifdef __MSDOS__
|
|---|
| 3584 | {
|
|---|
| 3585 | /* The environment variable $DJDIR holds the root of the DJGPP directory
|
|---|
| 3586 | tree; add ${DJDIR}/include. */
|
|---|
| 3587 | struct variable *djdir = lookup_variable ("DJDIR", 5);
|
|---|
| 3588 |
|
|---|
| 3589 | if (djdir)
|
|---|
| 3590 | {
|
|---|
| 3591 | unsigned int len = strlen (djdir->value) + 8;
|
|---|
| 3592 | char *defdir = alloca (len + 1);
|
|---|
| 3593 |
|
|---|
| 3594 | strcat (strcpy (defdir, djdir->value), "/include");
|
|---|
| 3595 | dirs[idx++] = strcache_add (defdir);
|
|---|
| 3596 |
|
|---|
| 3597 | if (len > max_incl_len)
|
|---|
| 3598 | max_incl_len = len;
|
|---|
| 3599 | }
|
|---|
| 3600 | }
|
|---|
| 3601 | #endif
|
|---|
| 3602 | #ifdef KMK
|
|---|
| 3603 | /* Add $(KBUILD_PATH). */
|
|---|
| 3604 | {
|
|---|
| 3605 | size_t len = strlen (get_kbuild_path ());
|
|---|
| 3606 | dirs[idx++] = strcache_add_len (get_kbuild_path (), len);
|
|---|
| 3607 | if (len > max_incl_len)
|
|---|
| 3608 | max_incl_len = len;
|
|---|
| 3609 | }
|
|---|
| 3610 | #endif
|
|---|
| 3611 |
|
|---|
| 3612 | for (cpp = default_include_directories; *cpp != 0; ++cpp)
|
|---|
| 3613 | {
|
|---|
| 3614 | int e;
|
|---|
| 3615 |
|
|---|
| 3616 | EINTRLOOP (e, stat (*cpp, &stbuf));
|
|---|
| 3617 | if (e == 0 && S_ISDIR (stbuf.st_mode))
|
|---|
| 3618 | {
|
|---|
| 3619 | unsigned int len = strlen (*cpp);
|
|---|
| 3620 | /* If dir name is written with trailing slashes, discard them. */
|
|---|
| 3621 | while (len > 1 && (*cpp)[len - 1] == '/')
|
|---|
| 3622 | --len;
|
|---|
| 3623 | if (len > max_incl_len)
|
|---|
| 3624 | max_incl_len = len;
|
|---|
| 3625 | dirs[idx++] = strcache_add_len (*cpp, len);
|
|---|
| 3626 | }
|
|---|
| 3627 | }
|
|---|
| 3628 |
|
|---|
| 3629 | dirs[idx] = 0;
|
|---|
| 3630 |
|
|---|
| 3631 | /* Now add each dir to the .INCLUDE_DIRS variable. */
|
|---|
| 3632 |
|
|---|
| 3633 | for (cpp = dirs; *cpp != 0; ++cpp)
|
|---|
| 3634 | do_variable_definition (NILF, ".INCLUDE_DIRS", *cpp,
|
|---|
| 3635 | o_default, f_append, 0);
|
|---|
| 3636 |
|
|---|
| 3637 | include_directories = dirs;
|
|---|
| 3638 | }
|
|---|
| 3639 | |
|---|
| 3640 |
|
|---|
| 3641 | /* Expand ~ or ~USER at the beginning of NAME.
|
|---|
| 3642 | Return a newly malloc'd string or 0. */
|
|---|
| 3643 |
|
|---|
| 3644 | char *
|
|---|
| 3645 | tilde_expand (const char *name)
|
|---|
| 3646 | {
|
|---|
| 3647 | #ifndef VMS
|
|---|
| 3648 | if (name[1] == '/' || name[1] == '\0')
|
|---|
| 3649 | {
|
|---|
| 3650 | char *home_dir;
|
|---|
| 3651 | int is_variable;
|
|---|
| 3652 |
|
|---|
| 3653 | {
|
|---|
| 3654 | /* Turn off --warn-undefined-variables while we expand HOME. */
|
|---|
| 3655 | int save = warn_undefined_variables_flag;
|
|---|
| 3656 | warn_undefined_variables_flag = 0;
|
|---|
| 3657 |
|
|---|
| 3658 | #ifndef CONFIG_WITH_VALUE_LENGTH
|
|---|
| 3659 | home_dir = allocated_variable_expand ("$(HOME)");
|
|---|
| 3660 | #else
|
|---|
| 3661 | home_dir = allocated_variable_expand_2 (STRING_SIZE_TUPLE("$(HOME)"), NULL);
|
|---|
| 3662 | #endif
|
|---|
| 3663 |
|
|---|
| 3664 | warn_undefined_variables_flag = save;
|
|---|
| 3665 | }
|
|---|
| 3666 |
|
|---|
| 3667 | is_variable = home_dir[0] != '\0';
|
|---|
| 3668 | if (!is_variable)
|
|---|
| 3669 | {
|
|---|
| 3670 | free (home_dir);
|
|---|
| 3671 | home_dir = getenv ("HOME");
|
|---|
| 3672 | }
|
|---|
| 3673 | # if !defined(_AMIGA) && !defined(WINDOWS32)
|
|---|
| 3674 | if (home_dir == 0 || home_dir[0] == '\0')
|
|---|
| 3675 | {
|
|---|
| 3676 | char *logname = getlogin ();
|
|---|
| 3677 | home_dir = 0;
|
|---|
| 3678 | if (logname != 0)
|
|---|
| 3679 | {
|
|---|
| 3680 | struct passwd *p = getpwnam (logname);
|
|---|
| 3681 | if (p != 0)
|
|---|
| 3682 | home_dir = p->pw_dir;
|
|---|
| 3683 | }
|
|---|
| 3684 | }
|
|---|
| 3685 | # endif /* !AMIGA && !WINDOWS32 */
|
|---|
| 3686 | if (home_dir != 0)
|
|---|
| 3687 | {
|
|---|
| 3688 | char *new = xstrdup (concat (2, home_dir, name + 1));
|
|---|
| 3689 | if (is_variable)
|
|---|
| 3690 | free (home_dir);
|
|---|
| 3691 | return new;
|
|---|
| 3692 | }
|
|---|
| 3693 | }
|
|---|
| 3694 | # if !defined(_AMIGA) && !defined(WINDOWS32)
|
|---|
| 3695 | else
|
|---|
| 3696 | {
|
|---|
| 3697 | struct passwd *pwent;
|
|---|
| 3698 | char *userend = strchr (name + 1, '/');
|
|---|
| 3699 | if (userend != 0)
|
|---|
| 3700 | *userend = '\0';
|
|---|
| 3701 | pwent = getpwnam (name + 1);
|
|---|
| 3702 | if (pwent != 0)
|
|---|
| 3703 | {
|
|---|
| 3704 | if (userend == 0)
|
|---|
| 3705 | return xstrdup (pwent->pw_dir);
|
|---|
| 3706 | else
|
|---|
| 3707 | return xstrdup (concat (3, pwent->pw_dir, "/", userend + 1));
|
|---|
| 3708 | }
|
|---|
| 3709 | else if (userend != 0)
|
|---|
| 3710 | *userend = '/';
|
|---|
| 3711 | }
|
|---|
| 3712 | # endif /* !AMIGA && !WINDOWS32 */
|
|---|
| 3713 | #endif /* !VMS */
|
|---|
| 3714 | return 0;
|
|---|
| 3715 | }
|
|---|
| 3716 | |
|---|
| 3717 |
|
|---|
| 3718 | /* Parse a string into a sequence of filenames represented as a chain of
|
|---|
| 3719 | struct nameseq's and return that chain. Optionally expand the strings via
|
|---|
| 3720 | glob().
|
|---|
| 3721 |
|
|---|
| 3722 | The string is passed as STRINGP, the address of a string pointer.
|
|---|
| 3723 | The string pointer is updated to point at the first character
|
|---|
| 3724 | not parsed, which either is a null char or equals STOPCHAR.
|
|---|
| 3725 |
|
|---|
| 3726 | SIZE is how big to construct chain elements.
|
|---|
| 3727 | This is useful if we want them actually to be other structures
|
|---|
| 3728 | that have room for additional info.
|
|---|
| 3729 |
|
|---|
| 3730 | PREFIX, if non-null, is added to the beginning of each filename.
|
|---|
| 3731 |
|
|---|
| 3732 | FLAGS allows one or more of the following bitflags to be set:
|
|---|
| 3733 | PARSEFS_NOSTRIP - Do no strip './'s off the beginning
|
|---|
| 3734 | PARSEFS_NOAR - Do not check filenames for archive references
|
|---|
| 3735 | PARSEFS_NOGLOB - Do not expand globbing characters
|
|---|
| 3736 | PARSEFS_EXISTS - Only return globbed files that actually exist
|
|---|
| 3737 | (cannot also set NOGLOB)
|
|---|
| 3738 | PARSEFS_NOCACHE - Do not add filenames to the strcache (caller frees)
|
|---|
| 3739 | */
|
|---|
| 3740 |
|
|---|
| 3741 | void *
|
|---|
| 3742 | parse_file_seq (char **stringp, unsigned int size, int stopmap,
|
|---|
| 3743 | const char *prefix, int flags
|
|---|
| 3744 | IF_WITH_ALLOC_CACHES_PARAM(struct alloccache *alloc_cache) )
|
|---|
| 3745 | {
|
|---|
| 3746 | /* tmp points to tmpbuf after the prefix, if any.
|
|---|
| 3747 | tp is the end of the buffer. */
|
|---|
| 3748 | static char *tmpbuf = NULL;
|
|---|
| 3749 |
|
|---|
| 3750 | int cachep = NONE_SET (flags, PARSEFS_NOCACHE);
|
|---|
| 3751 |
|
|---|
| 3752 | struct nameseq *new = 0;
|
|---|
| 3753 | struct nameseq **newp = &new;
|
|---|
| 3754 | #ifndef CONFIG_WITH_ALLOC_CACHES
|
|---|
| 3755 | #define NEWELT(_n) do { \
|
|---|
| 3756 | const char *__n = (_n); \
|
|---|
| 3757 | *newp = xcalloc (size); \
|
|---|
| 3758 | (*newp)->name = (cachep ? strcache_add (__n) : xstrdup (__n)); \
|
|---|
| 3759 | newp = &(*newp)->next; \
|
|---|
| 3760 | } while(0)
|
|---|
| 3761 | #else
|
|---|
| 3762 | # define NEWELT(_n) do { \
|
|---|
| 3763 | const char *__n = (_n); \
|
|---|
| 3764 | *newp = alloccache_calloc (alloc_cache); \
|
|---|
| 3765 | (*newp)->name = (cachep ? strcache_add (__n) : xstrdup (__n)); \
|
|---|
| 3766 | newp = &(*newp)->next; \
|
|---|
| 3767 | } while(0)
|
|---|
| 3768 | #endif
|
|---|
| 3769 |
|
|---|
| 3770 | char *p;
|
|---|
| 3771 | glob_t gl;
|
|---|
| 3772 | char *tp;
|
|---|
| 3773 |
|
|---|
| 3774 | /* Always stop on NUL. */
|
|---|
| 3775 | stopmap |= MAP_NUL;
|
|---|
| 3776 |
|
|---|
| 3777 | if (size < sizeof (struct nameseq))
|
|---|
| 3778 | size = sizeof (struct nameseq);
|
|---|
| 3779 |
|
|---|
| 3780 | if (NONE_SET (flags, PARSEFS_NOGLOB))
|
|---|
| 3781 | dir_setup_glob (&gl);
|
|---|
| 3782 |
|
|---|
| 3783 | /* Get enough temporary space to construct the largest possible target. */
|
|---|
| 3784 | {
|
|---|
| 3785 | static int tmpbuf_len = 0;
|
|---|
| 3786 | int l = strlen (*stringp) + 1;
|
|---|
| 3787 | if (l > tmpbuf_len)
|
|---|
| 3788 | {
|
|---|
| 3789 | tmpbuf = xrealloc (tmpbuf, l);
|
|---|
| 3790 | tmpbuf_len = l;
|
|---|
| 3791 | }
|
|---|
| 3792 | }
|
|---|
| 3793 | tp = tmpbuf;
|
|---|
| 3794 |
|
|---|
| 3795 | /* Parse STRING. P will always point to the end of the parsed content. */
|
|---|
| 3796 | p = *stringp;
|
|---|
| 3797 | while (1)
|
|---|
| 3798 | {
|
|---|
| 3799 | const char *name;
|
|---|
| 3800 | const char **nlist = 0;
|
|---|
| 3801 | char *tildep = 0;
|
|---|
| 3802 | int globme = 1;
|
|---|
| 3803 | #ifndef NO_ARCHIVES
|
|---|
| 3804 | char *arname = 0;
|
|---|
| 3805 | char *memname = 0;
|
|---|
| 3806 | #endif
|
|---|
| 3807 | char *s;
|
|---|
| 3808 | int nlen;
|
|---|
| 3809 | int i;
|
|---|
| 3810 |
|
|---|
| 3811 | /* Skip whitespace; at the end of the string or STOPCHAR we're done. */
|
|---|
| 3812 | NEXT_TOKEN (p);
|
|---|
| 3813 | if (STOP_SET (*p, stopmap))
|
|---|
| 3814 | break;
|
|---|
| 3815 |
|
|---|
| 3816 | /* There are names left, so find the end of the next name.
|
|---|
| 3817 | Throughout this iteration S points to the start. */
|
|---|
| 3818 | s = p;
|
|---|
| 3819 | p = find_char_unquote (p, stopmap|MAP_VMSCOMMA|MAP_BLANK IF_WITH_VALUE_LENGTH_PARAM(0));
|
|---|
| 3820 | #ifdef VMS
|
|---|
| 3821 | /* convert comma separated list to space separated */
|
|---|
| 3822 | if (p && *p == ',')
|
|---|
| 3823 | *p =' ';
|
|---|
| 3824 | #endif
|
|---|
| 3825 | #ifdef _AMIGA
|
|---|
| 3826 | if (p && STOP_SET (*p, stopmap & MAP_COLON)
|
|---|
| 3827 | && !(ISSPACE (p[1]) || !p[1] || ISSPACE (p[-1])))
|
|---|
| 3828 | p = find_char_unquote (p+1, stopmap|MAP_VMSCOMMA|MAP_BLANK);
|
|---|
| 3829 | #endif
|
|---|
| 3830 | #ifdef HAVE_DOS_PATHS
|
|---|
| 3831 | /* For DOS paths, skip a "C:\..." or a "C:/..." until we find the
|
|---|
| 3832 | first colon which isn't followed by a slash or a backslash.
|
|---|
| 3833 | Note that tokens separated by spaces should be treated as separate
|
|---|
| 3834 | tokens since make doesn't allow path names with spaces */
|
|---|
| 3835 | if (stopmap | MAP_COLON)
|
|---|
| 3836 | while (p != 0 && !ISSPACE (*p) &&
|
|---|
| 3837 | (p[1] == '\\' || p[1] == '/') && isalpha ((unsigned char)p[-1]))
|
|---|
| 3838 | p = find_char_unquote (p + 1, stopmap|MAP_VMSCOMMA|MAP_BLANK IF_WITH_VALUE_LENGTH_PARAM(0));
|
|---|
| 3839 | #endif
|
|---|
| 3840 | if (p == 0)
|
|---|
| 3841 | p = s + strlen (s);
|
|---|
| 3842 |
|
|---|
| 3843 | /* Strip leading "this directory" references. */
|
|---|
| 3844 | if (NONE_SET (flags, PARSEFS_NOSTRIP))
|
|---|
| 3845 | #ifdef VMS
|
|---|
| 3846 | /* Skip leading '[]'s. should only be one set or bug somwhere else */
|
|---|
| 3847 | if (p - s > 2 && s[0] == '[' && s[1] == ']')
|
|---|
| 3848 | s += 2;
|
|---|
| 3849 | /* Skip leading '<>'s. should only be one set or bug somwhere else */
|
|---|
| 3850 | if (p - s > 2 && s[0] == '<' && s[1] == '>')
|
|---|
| 3851 | s += 2;
|
|---|
| 3852 | #endif
|
|---|
| 3853 | /* Skip leading './'s. */
|
|---|
| 3854 | while (p - s > 2 && s[0] == '.' && s[1] == '/')
|
|---|
| 3855 | {
|
|---|
| 3856 | /* Skip "./" and all following slashes. */
|
|---|
| 3857 | s += 2;
|
|---|
| 3858 | while (*s == '/')
|
|---|
| 3859 | ++s;
|
|---|
| 3860 | }
|
|---|
| 3861 |
|
|---|
| 3862 | /* Extract the filename just found, and skip it.
|
|---|
| 3863 | Set NAME to the string, and NLEN to its length. */
|
|---|
| 3864 |
|
|---|
| 3865 | if (s == p)
|
|---|
| 3866 | {
|
|---|
| 3867 | /* The name was stripped to empty ("./"). */
|
|---|
| 3868 | #if defined(_AMIGA)
|
|---|
| 3869 | /* PDS-- This cannot be right!! */
|
|---|
| 3870 | tp[0] = '\0';
|
|---|
| 3871 | nlen = 0;
|
|---|
| 3872 | #else
|
|---|
| 3873 | tp[0] = '.';
|
|---|
| 3874 | tp[1] = '/';
|
|---|
| 3875 | tp[2] = '\0';
|
|---|
| 3876 | nlen = 2;
|
|---|
| 3877 | #endif
|
|---|
| 3878 | }
|
|---|
| 3879 | else
|
|---|
| 3880 | {
|
|---|
| 3881 | #ifdef VMS
|
|---|
| 3882 | /* VMS filenames can have a ':' in them but they have to be '\'ed but we need
|
|---|
| 3883 | * to remove this '\' before we can use the filename.
|
|---|
| 3884 | * xstrdup called because S may be read-only string constant.
|
|---|
| 3885 | */
|
|---|
| 3886 | char *n = tp;
|
|---|
| 3887 | while (s < p)
|
|---|
| 3888 | {
|
|---|
| 3889 | if (s[0] == '\\' && s[1] == ':')
|
|---|
| 3890 | ++s;
|
|---|
| 3891 | *(n++) = *(s++);
|
|---|
| 3892 | }
|
|---|
| 3893 | n[0] = '\0';
|
|---|
| 3894 | nlen = strlen (tp);
|
|---|
| 3895 | #else
|
|---|
| 3896 | nlen = p - s;
|
|---|
| 3897 | memcpy (tp, s, nlen);
|
|---|
| 3898 | tp[nlen] = '\0';
|
|---|
| 3899 | #endif
|
|---|
| 3900 | }
|
|---|
| 3901 |
|
|---|
| 3902 | /* At this point, TP points to the element and NLEN is its length. */
|
|---|
| 3903 |
|
|---|
| 3904 | #ifndef NO_ARCHIVES
|
|---|
| 3905 | /* If this is the start of an archive group that isn't complete, set up
|
|---|
| 3906 | to add the archive prefix for future files. A file list like:
|
|---|
| 3907 | "libf.a(x.o y.o z.o)" needs to be expanded as:
|
|---|
| 3908 | "libf.a(x.o) libf.a(y.o) libf.a(z.o)"
|
|---|
| 3909 |
|
|---|
| 3910 | TP == TMP means we're not already in an archive group. Ignore
|
|---|
| 3911 | something starting with '(', as that cannot actually be an
|
|---|
| 3912 | archive-member reference (and treating it as such results in an empty
|
|---|
| 3913 | file name, which causes much lossage). Also if it ends in ")" then
|
|---|
| 3914 | it's a complete reference so we don't need to treat it specially.
|
|---|
| 3915 |
|
|---|
| 3916 | Finally, note that archive groups must end with ')' as the last
|
|---|
| 3917 | character, so ensure there's some word ending like that before
|
|---|
| 3918 | considering this an archive group. */
|
|---|
| 3919 | if (NONE_SET (flags, PARSEFS_NOAR)
|
|---|
| 3920 | && tp == tmpbuf && tp[0] != '(' && tp[nlen-1] != ')')
|
|---|
| 3921 | {
|
|---|
| 3922 | char *n = strchr (tp, '(');
|
|---|
| 3923 | if (n)
|
|---|
| 3924 | {
|
|---|
| 3925 | /* This looks like the first element in an open archive group.
|
|---|
| 3926 | A valid group MUST have ')' as the last character. */
|
|---|
| 3927 | const char *e = p;
|
|---|
| 3928 | do
|
|---|
| 3929 | {
|
|---|
| 3930 | const char *o = e;
|
|---|
| 3931 | NEXT_TOKEN (e);
|
|---|
| 3932 | /* Find the end of this word. We don't want to unquote and
|
|---|
| 3933 | we don't care about quoting since we're looking for the
|
|---|
| 3934 | last char in the word. */
|
|---|
| 3935 | while (! STOP_SET (*e, stopmap|MAP_BLANK|MAP_VMSCOMMA))
|
|---|
| 3936 | ++e;
|
|---|
| 3937 | /* If we didn't move, we're done now. */
|
|---|
| 3938 | if (e == o)
|
|---|
| 3939 | break;
|
|---|
| 3940 | if (e[-1] == ')')
|
|---|
| 3941 | {
|
|---|
| 3942 | /* Found the end, so this is the first element in an
|
|---|
| 3943 | open archive group. It looks like "lib(mem".
|
|---|
| 3944 | Reset TP past the open paren. */
|
|---|
| 3945 | nlen -= (n + 1) - tp;
|
|---|
| 3946 | tp = n + 1;
|
|---|
| 3947 |
|
|---|
| 3948 | /* We can stop looking now. */
|
|---|
| 3949 | break;
|
|---|
| 3950 | }
|
|---|
| 3951 | }
|
|---|
| 3952 | while (*e != '\0');
|
|---|
| 3953 |
|
|---|
| 3954 | /* If we have just "lib(", part of something like "lib( a b)",
|
|---|
| 3955 | go to the next item. */
|
|---|
| 3956 | if (! nlen)
|
|---|
| 3957 | continue;
|
|---|
| 3958 | }
|
|---|
| 3959 | }
|
|---|
| 3960 |
|
|---|
| 3961 | /* If we are inside an archive group, make sure it has an end. */
|
|---|
| 3962 | if (tp > tmpbuf)
|
|---|
| 3963 | {
|
|---|
| 3964 | if (tp[nlen-1] == ')')
|
|---|
| 3965 | {
|
|---|
| 3966 | /* This is the natural end; reset TP. */
|
|---|
| 3967 | tp = tmpbuf;
|
|---|
| 3968 |
|
|---|
| 3969 | /* This is just ")", something like "lib(a b )": skip it. */
|
|---|
| 3970 | if (nlen == 1)
|
|---|
| 3971 | continue;
|
|---|
| 3972 | }
|
|---|
| 3973 | else
|
|---|
| 3974 | {
|
|---|
| 3975 | /* Not the end, so add a "fake" end. */
|
|---|
| 3976 | tp[nlen++] = ')';
|
|---|
| 3977 | tp[nlen] = '\0';
|
|---|
| 3978 | }
|
|---|
| 3979 | }
|
|---|
| 3980 | #endif
|
|---|
| 3981 |
|
|---|
| 3982 | /* If we're not globbing we're done: add it to the end of the chain.
|
|---|
| 3983 | Go to the next item in the string. */
|
|---|
| 3984 | if (ANY_SET (flags, PARSEFS_NOGLOB))
|
|---|
| 3985 | {
|
|---|
| 3986 | NEWELT (concat (2, prefix, tmpbuf));
|
|---|
| 3987 | continue;
|
|---|
| 3988 | }
|
|---|
| 3989 |
|
|---|
| 3990 | /* If we get here we know we're doing glob expansion.
|
|---|
| 3991 | TP is a string in tmpbuf. NLEN is no longer used.
|
|---|
| 3992 | We may need to do more work: after this NAME will be set. */
|
|---|
| 3993 | name = tmpbuf;
|
|---|
| 3994 |
|
|---|
| 3995 | /* Expand tilde if applicable. */
|
|---|
| 3996 | if (tmpbuf[0] == '~')
|
|---|
| 3997 | {
|
|---|
| 3998 | tildep = tilde_expand (tmpbuf);
|
|---|
| 3999 | if (tildep != 0)
|
|---|
| 4000 | name = tildep;
|
|---|
| 4001 | }
|
|---|
| 4002 |
|
|---|
| 4003 | #ifndef NO_ARCHIVES
|
|---|
| 4004 | /* If NAME is an archive member reference replace it with the archive
|
|---|
| 4005 | file name, and save the member name in MEMNAME. We will glob on the
|
|---|
| 4006 | archive name and then reattach MEMNAME later. */
|
|---|
| 4007 | if (NONE_SET (flags, PARSEFS_NOAR) && ar_name (name))
|
|---|
| 4008 | {
|
|---|
| 4009 | ar_parse_name (name, &arname, &memname);
|
|---|
| 4010 | name = arname;
|
|---|
| 4011 | }
|
|---|
| 4012 | #endif /* !NO_ARCHIVES */
|
|---|
| 4013 |
|
|---|
| 4014 | /* glob() is expensive: don't call it unless we need to. */
|
|---|
| 4015 | if (NONE_SET (flags, PARSEFS_EXISTS) && strpbrk (name, "?*[") == NULL)
|
|---|
| 4016 | {
|
|---|
| 4017 | globme = 0;
|
|---|
| 4018 | i = 1;
|
|---|
| 4019 | nlist = &name;
|
|---|
| 4020 | }
|
|---|
| 4021 | else
|
|---|
| 4022 | switch (glob (name, GLOB_NOSORT|GLOB_ALTDIRFUNC, NULL, &gl))
|
|---|
| 4023 | {
|
|---|
| 4024 | case GLOB_NOSPACE:
|
|---|
| 4025 | OUT_OF_MEM();
|
|---|
| 4026 |
|
|---|
| 4027 | case 0:
|
|---|
| 4028 | /* Success. */
|
|---|
| 4029 | i = gl.gl_pathc;
|
|---|
| 4030 | nlist = (const char **)gl.gl_pathv;
|
|---|
| 4031 | break;
|
|---|
| 4032 |
|
|---|
| 4033 | case GLOB_NOMATCH:
|
|---|
| 4034 | /* If we want only existing items, skip this one. */
|
|---|
| 4035 | if (ANY_SET (flags, PARSEFS_EXISTS))
|
|---|
| 4036 | {
|
|---|
| 4037 | i = 0;
|
|---|
| 4038 | break;
|
|---|
| 4039 | }
|
|---|
| 4040 | /* FALLTHROUGH */
|
|---|
| 4041 |
|
|---|
| 4042 | default:
|
|---|
| 4043 | /* By default keep this name. */
|
|---|
| 4044 | i = 1;
|
|---|
| 4045 | nlist = &name;
|
|---|
| 4046 | break;
|
|---|
| 4047 | }
|
|---|
| 4048 |
|
|---|
| 4049 | /* For each matched element, add it to the list. */
|
|---|
| 4050 | while (i-- > 0)
|
|---|
| 4051 | #ifndef NO_ARCHIVES
|
|---|
| 4052 | if (memname != 0)
|
|---|
| 4053 | {
|
|---|
| 4054 | /* Try to glob on MEMNAME within the archive. */
|
|---|
| 4055 | struct nameseq *found = ar_glob (nlist[i], memname, size);
|
|---|
| 4056 | if (! found)
|
|---|
| 4057 | /* No matches. Use MEMNAME as-is. */
|
|---|
| 4058 | NEWELT (concat (5, prefix, nlist[i], "(", memname, ")"));
|
|---|
| 4059 | else
|
|---|
| 4060 | {
|
|---|
| 4061 | /* We got a chain of items. Attach them. */
|
|---|
| 4062 | if (*newp)
|
|---|
| 4063 | (*newp)->next = found;
|
|---|
| 4064 | else
|
|---|
| 4065 | *newp = found;
|
|---|
| 4066 |
|
|---|
| 4067 | /* Find and set the new end. Massage names if necessary. */
|
|---|
| 4068 | while (1)
|
|---|
| 4069 | {
|
|---|
| 4070 | if (! cachep)
|
|---|
| 4071 | found->name = xstrdup (concat (2, prefix, name));
|
|---|
| 4072 | else if (prefix)
|
|---|
| 4073 | found->name = strcache_add (concat (2, prefix, name));
|
|---|
| 4074 |
|
|---|
| 4075 | if (found->next == 0)
|
|---|
| 4076 | break;
|
|---|
| 4077 |
|
|---|
| 4078 | found = found->next;
|
|---|
| 4079 | }
|
|---|
| 4080 | newp = &found->next;
|
|---|
| 4081 | }
|
|---|
| 4082 | }
|
|---|
| 4083 | else
|
|---|
| 4084 | #endif /* !NO_ARCHIVES */
|
|---|
| 4085 | NEWELT (concat (2, prefix, nlist[i]));
|
|---|
| 4086 |
|
|---|
| 4087 | if (globme)
|
|---|
| 4088 | globfree (&gl);
|
|---|
| 4089 |
|
|---|
| 4090 | #ifndef NO_ARCHIVES
|
|---|
| 4091 | free (arname);
|
|---|
| 4092 | #endif
|
|---|
| 4093 |
|
|---|
| 4094 | free (tildep);
|
|---|
| 4095 | }
|
|---|
| 4096 |
|
|---|
| 4097 | *stringp = p;
|
|---|
| 4098 | return new;
|
|---|
| 4099 | }
|
|---|
| 4100 |
|
|---|