| 1 | /* Reading and parsing of makefiles for GNU Make.
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| 2 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
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| 3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
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| 4 | Foundation, Inc.
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| 5 | This file is part of GNU Make.
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| 6 |
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| 7 | GNU Make is free software; you can redistribute it and/or modify it under the
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| 8 | terms of the GNU General Public License as published by the Free Software
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| 9 | Foundation; either version 3 of the License, or (at your option) any later
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| 10 | version.
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| 11 |
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| 12 | GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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| 14 | A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License along with
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| 17 | this program. If not, see <http://www.gnu.org/licenses/>. */
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| 18 |
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| 19 | #include "make.h"
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| 20 |
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| 21 | #include <assert.h>
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| 22 |
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| 23 | #include <glob.h>
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| 24 |
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| 25 | #include "dep.h"
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| 26 | #include "filedef.h"
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| 27 | #include "job.h"
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| 28 | #include "commands.h"
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| 29 | #include "variable.h"
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| 30 | #include "rule.h"
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| 31 | #include "debug.h"
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| 32 | #include "hash.h"
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| 33 |
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| 34 |
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| 35 | #ifndef WINDOWS32
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| 36 | #ifndef _AMIGA
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| 37 | #ifndef VMS
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| 38 | #include <pwd.h>
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| 39 | #else
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| 40 | struct passwd *getpwnam (char *name);
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| 41 | #endif
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| 42 | #endif
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| 43 | #endif /* !WINDOWS32 */
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| 44 |
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| 45 | /* A 'struct ebuffer' controls the origin of the makefile we are currently
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| 46 | eval'ing.
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| 47 | */
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| 48 |
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| 49 | struct ebuffer
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| 50 | {
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| 51 | char *buffer; /* Start of the current line in the buffer. */
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| 52 | char *bufnext; /* Start of the next line in the buffer. */
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| 53 | char *bufstart; /* Start of the entire buffer. */
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| 54 | unsigned int size; /* Malloc'd size of buffer. */
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| 55 | FILE *fp; /* File, or NULL if this is an internal buffer. */
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| 56 | struct floc floc; /* Info on the file in fp (if any). */
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| 57 | };
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| 58 |
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| 59 | /* Types of "words" that can be read in a makefile. */
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| 60 | enum make_word_type
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| 61 | {
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| 62 | w_bogus, w_eol, w_static, w_variable, w_colon, w_dcolon, w_semicolon,
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| 63 | w_varassign
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| 64 | };
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| 65 |
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| 66 |
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| 67 | /* A `struct conditionals' contains the information describing
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| 68 | all the active conditionals in a makefile.
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| 69 |
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| 70 | The global variable `conditionals' contains the conditionals
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| 71 | information for the current makefile. It is initialized from
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| 72 | the static structure `toplevel_conditionals' and is later changed
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| 73 | to new structures for included makefiles. */
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| 74 |
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| 75 | struct conditionals
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| 76 | {
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| 77 | unsigned int if_cmds; /* Depth of conditional nesting. */
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| 78 | unsigned int allocated; /* Elts allocated in following arrays. */
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| 79 | char *ignoring; /* Are we ignoring or interpreting?
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| 80 | 0=interpreting, 1=not yet interpreted,
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| 81 | 2=already interpreted */
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| 82 | char *seen_else; /* Have we already seen an `else'? */
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| 83 | };
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| 84 |
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| 85 | static struct conditionals toplevel_conditionals;
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| 86 | static struct conditionals *conditionals = &toplevel_conditionals;
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| 87 |
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| 88 |
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| 89 | /* Default directories to search for include files in */
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| 90 |
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| 91 | static const char *default_include_directories[] =
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| 92 | {
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| 93 | #if defined(WINDOWS32) && !defined(INCLUDEDIR)
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| 94 | /* This completely up to the user when they install MSVC or other packages.
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| 95 | This is defined as a placeholder. */
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| 96 | # define INCLUDEDIR "."
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| 97 | #endif
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| 98 | INCLUDEDIR,
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| 99 | #ifndef _AMIGA
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| 100 | "/usr/gnu/include",
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| 101 | "/usr/local/include",
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| 102 | "/usr/include",
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| 103 | #endif
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| 104 | 0
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| 105 | };
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| 106 |
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| 107 | /* List of directories to search for include files in */
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| 108 |
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| 109 | static const char **include_directories;
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| 110 |
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| 111 | /* Maximum length of an element of the above. */
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| 112 |
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| 113 | static unsigned int max_incl_len;
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| 114 |
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| 115 | /* The filename and pointer to line number of the
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| 116 | makefile currently being read in. */
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| 117 |
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| 118 | const struct floc *reading_file = 0;
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| 119 |
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| 120 | /* The chain of makefiles read by read_makefile. */
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| 121 |
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| 122 | static struct dep *read_makefiles = 0;
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| 123 |
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| 124 | static int eval_makefile (const char *filename, int flags);
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| 125 | static int eval (struct ebuffer *buffer, int flags);
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| 126 |
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| 127 | static long readline (struct ebuffer *ebuf);
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| 128 | static void do_define (char *name, unsigned int namelen,
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| 129 | enum variable_origin origin, struct ebuffer *ebuf);
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| 130 | static int conditional_line (char *line, int len, const struct floc *flocp);
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| 131 | static void record_files (struct nameseq *filenames, const char *pattern,
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| 132 | const char *pattern_percent, struct dep *deps,
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| 133 | unsigned int cmds_started, char *commands,
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| 134 | unsigned int commands_idx, int two_colon,
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| 135 | const struct floc *flocp);
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| 136 | static void record_target_var (struct nameseq *filenames, char *defn,
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| 137 | enum variable_origin origin, int enabled,
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| 138 | const struct floc *flocp);
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| 139 | static enum make_word_type get_next_mword (char *buffer, char *delim,
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| 140 | char **startp, unsigned int *length);
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| 141 | static void remove_comments (char *line);
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| 142 | static char *find_char_unquote (char *string, int stop1, int stop2,
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| 143 | int blank, int ignorevars);
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| 144 | |
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| 145 |
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| 146 | /* Read in all the makefiles and return the chain of their names. */
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| 147 |
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| 148 | struct dep *
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| 149 | read_all_makefiles (const char **makefiles)
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| 150 | {
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| 151 | unsigned int num_makefiles = 0;
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| 152 |
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| 153 | /* Create *_LIST variables, to hold the makefiles, targets, and variables
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| 154 | we will be reading. */
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| 155 |
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| 156 | define_variable ("MAKEFILE_LIST", sizeof ("MAKEFILE_LIST")-1, "", o_file, 0);
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| 157 |
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| 158 | DB (DB_BASIC, (_("Reading makefiles...\n")));
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| 159 |
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| 160 | /* If there's a non-null variable MAKEFILES, its value is a list of
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| 161 | files to read first thing. But don't let it prevent reading the
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| 162 | default makefiles and don't let the default goal come from there. */
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| 163 |
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| 164 | {
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| 165 | char *value;
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| 166 | char *name, *p;
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| 167 | unsigned int length;
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| 168 |
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| 169 | {
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| 170 | /* Turn off --warn-undefined-variables while we expand MAKEFILES. */
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| 171 | int save = warn_undefined_variables_flag;
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| 172 | warn_undefined_variables_flag = 0;
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| 173 |
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| 174 | value = allocated_variable_expand ("$(MAKEFILES)");
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| 175 |
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| 176 | warn_undefined_variables_flag = save;
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| 177 | }
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| 178 |
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| 179 | /* Set NAME to the start of next token and LENGTH to its length.
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| 180 | MAKEFILES is updated for finding remaining tokens. */
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| 181 | p = value;
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| 182 |
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| 183 | while ((name = find_next_token ((const char **)&p, &length)) != 0)
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| 184 | {
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| 185 | if (*p != '\0')
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| 186 | *p++ = '\0';
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| 187 | eval_makefile (name, RM_NO_DEFAULT_GOAL|RM_INCLUDED|RM_DONTCARE);
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| 188 | }
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| 189 |
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| 190 | free (value);
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| 191 | }
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| 192 |
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| 193 | /* Read makefiles specified with -f switches. */
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| 194 |
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| 195 | if (makefiles != 0)
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| 196 | while (*makefiles != 0)
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| 197 | {
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| 198 | struct dep *tail = read_makefiles;
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| 199 | register struct dep *d;
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| 200 |
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| 201 | if (! eval_makefile (*makefiles, 0))
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| 202 | perror_with_name ("", *makefiles);
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| 203 |
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| 204 | /* Find the right element of read_makefiles. */
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| 205 | d = read_makefiles;
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| 206 | while (d->next != tail)
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| 207 | d = d->next;
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| 208 |
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| 209 | /* Use the storage read_makefile allocates. */
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| 210 | *makefiles = dep_name (d);
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| 211 | ++num_makefiles;
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| 212 | ++makefiles;
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| 213 | }
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| 214 |
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| 215 | /* If there were no -f switches, try the default names. */
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| 216 |
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| 217 | if (num_makefiles == 0)
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| 218 | {
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| 219 | static char *default_makefiles[] =
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| 220 | #ifdef VMS
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| 221 | /* all lower case since readdir() (the vms version) 'lowercasifies' */
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| 222 | { "makefile.vms", "gnumakefile.", "makefile.", 0 };
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| 223 | #else
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| 224 | #ifdef _AMIGA
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| 225 | { "GNUmakefile", "Makefile", "SMakefile", 0 };
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| 226 | #else /* !Amiga && !VMS */
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| 227 | { "GNUmakefile", "makefile", "Makefile", 0 };
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| 228 | #endif /* AMIGA */
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| 229 | #endif /* VMS */
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| 230 | register char **p = default_makefiles;
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| 231 | while (*p != 0 && !file_exists_p (*p))
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| 232 | ++p;
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| 233 |
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| 234 | if (*p != 0)
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| 235 | {
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| 236 | if (! eval_makefile (*p, 0))
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| 237 | perror_with_name ("", *p);
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| 238 | }
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| 239 | else
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| 240 | {
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| 241 | /* No default makefile was found. Add the default makefiles to the
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| 242 | `read_makefiles' chain so they will be updated if possible. */
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| 243 | struct dep *tail = read_makefiles;
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| 244 | /* Add them to the tail, after any MAKEFILES variable makefiles. */
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| 245 | while (tail != 0 && tail->next != 0)
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| 246 | tail = tail->next;
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| 247 | for (p = default_makefiles; *p != 0; ++p)
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| 248 | {
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| 249 | struct dep *d = alloc_dep ();
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| 250 | d->file = enter_file (strcache_add (*p));
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| 251 | d->file->dontcare = 1;
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| 252 | /* Tell update_goal_chain to bail out as soon as this file is
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| 253 | made, and main not to die if we can't make this file. */
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| 254 | d->changed = RM_DONTCARE;
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| 255 | if (tail == 0)
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| 256 | read_makefiles = d;
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| 257 | else
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| 258 | tail->next = d;
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| 259 | tail = d;
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| 260 | }
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| 261 | if (tail != 0)
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| 262 | tail->next = 0;
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| 263 | }
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| 264 | }
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| 265 |
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| 266 | return read_makefiles;
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| 267 | }
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| 268 | |
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| 269 |
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| 270 | /* Install a new conditional and return the previous one. */
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| 271 |
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| 272 | static struct conditionals *
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| 273 | install_conditionals (struct conditionals *new)
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| 274 | {
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| 275 | struct conditionals *save = conditionals;
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| 276 |
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| 277 | memset (new, '\0', sizeof (*new));
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| 278 | conditionals = new;
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| 279 |
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| 280 | return save;
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| 281 | }
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| 282 |
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| 283 | /* Free the current conditionals and reinstate a saved one. */
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| 284 |
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| 285 | static void
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| 286 | restore_conditionals (struct conditionals *saved)
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| 287 | {
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| 288 | /* Free any space allocated by conditional_line. */
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| 289 | if (conditionals->ignoring)
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| 290 | free (conditionals->ignoring);
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| 291 | if (conditionals->seen_else)
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| 292 | free (conditionals->seen_else);
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| 293 |
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| 294 | /* Restore state. */
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| 295 | conditionals = saved;
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| 296 | }
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| 297 | |
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| 298 |
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| 299 | static int
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| 300 | eval_makefile (const char *filename, int flags)
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| 301 | {
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| 302 | struct dep *deps;
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| 303 | struct ebuffer ebuf;
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| 304 | const struct floc *curfile;
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| 305 | char *expanded = 0;
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| 306 | int makefile_errno;
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| 307 | int r;
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| 308 |
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| 309 | filename = strcache_add (filename);
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| 310 | ebuf.floc.filenm = filename;
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| 311 | ebuf.floc.lineno = 1;
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| 312 |
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| 313 | if (ISDB (DB_VERBOSE))
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| 314 | {
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| 315 | printf (_("Reading makefile `%s'"), filename);
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| 316 | if (flags & RM_NO_DEFAULT_GOAL)
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| 317 | printf (_(" (no default goal)"));
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| 318 | if (flags & RM_INCLUDED)
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| 319 | printf (_(" (search path)"));
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| 320 | if (flags & RM_DONTCARE)
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| 321 | printf (_(" (don't care)"));
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| 322 | if (flags & RM_NO_TILDE)
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| 323 | printf (_(" (no ~ expansion)"));
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| 324 | puts ("...");
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| 325 | }
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| 326 |
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| 327 | /* First, get a stream to read. */
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| 328 |
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| 329 | /* Expand ~ in FILENAME unless it came from `include',
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| 330 | in which case it was already done. */
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| 331 | if (!(flags & RM_NO_TILDE) && filename[0] == '~')
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| 332 | {
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| 333 | expanded = tilde_expand (filename);
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| 334 | if (expanded != 0)
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| 335 | filename = expanded;
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| 336 | }
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| 337 |
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| 338 | ebuf.fp = fopen (filename, "r");
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| 339 | /* Save the error code so we print the right message later. */
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| 340 | makefile_errno = errno;
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| 341 |
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| 342 | /* If the makefile wasn't found and it's either a makefile from
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| 343 | the `MAKEFILES' variable or an included makefile,
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| 344 | search the included makefile search path for this makefile. */
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| 345 | if (ebuf.fp == 0 && (flags & RM_INCLUDED) && *filename != '/')
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| 346 | {
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| 347 | unsigned int i;
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| 348 | for (i = 0; include_directories[i] != 0; ++i)
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| 349 | {
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| 350 | const char *included = concat (include_directories[i], "/", filename);
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| 351 | ebuf.fp = fopen (included, "r");
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| 352 | if (ebuf.fp)
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| 353 | {
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| 354 | filename = strcache_add (included);
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| 355 | break;
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| 356 | }
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| 357 | }
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| 358 | }
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| 359 |
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| 360 | /* Add FILENAME to the chain of read makefiles. */
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| 361 | deps = alloc_dep ();
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| 362 | deps->next = read_makefiles;
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| 363 | read_makefiles = deps;
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| 364 | deps->file = lookup_file (filename);
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| 365 | if (deps->file == 0)
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| 366 | deps->file = enter_file (filename);
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| 367 | filename = deps->file->name;
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| 368 | deps->changed = flags;
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| 369 | if (flags & RM_DONTCARE)
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| 370 | deps->file->dontcare = 1;
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| 371 |
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| 372 | if (expanded)
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| 373 | free (expanded);
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| 374 |
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| 375 | /* If the makefile can't be found at all, give up entirely. */
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| 376 |
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| 377 | if (ebuf.fp == 0)
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| 378 | {
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| 379 | /* If we did some searching, errno has the error from the last
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| 380 | attempt, rather from FILENAME itself. Restore it in case the
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| 381 | caller wants to use it in a message. */
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| 382 | errno = makefile_errno;
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| 383 | return 0;
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| 384 | }
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| 385 |
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| 386 | /* Add this makefile to the list. */
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| 387 | do_variable_definition (&ebuf.floc, "MAKEFILE_LIST", filename, o_file,
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| 388 | f_append, 0);
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| 389 |
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| 390 | /* Evaluate the makefile */
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| 391 |
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| 392 | ebuf.size = 200;
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| 393 | ebuf.buffer = ebuf.bufnext = ebuf.bufstart = xmalloc (ebuf.size);
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| 394 |
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| 395 | curfile = reading_file;
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| 396 | reading_file = &ebuf.floc;
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| 397 |
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| 398 | r = eval (&ebuf, !(flags & RM_NO_DEFAULT_GOAL));
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| 399 |
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| 400 | reading_file = curfile;
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| 401 |
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| 402 | fclose (ebuf.fp);
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| 403 |
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| 404 | free (ebuf.bufstart);
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| 405 | alloca (0);
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| 406 | return r;
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| 407 | }
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| 408 |
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| 409 | int
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| 410 | eval_buffer (char *buffer)
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| 411 | {
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| 412 | struct ebuffer ebuf;
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| 413 | struct conditionals *saved;
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| 414 | struct conditionals new;
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| 415 | const struct floc *curfile;
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| 416 | int r;
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| 417 |
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| 418 | /* Evaluate the buffer */
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| 419 |
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| 420 | ebuf.size = strlen (buffer);
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| 421 | ebuf.buffer = ebuf.bufnext = ebuf.bufstart = buffer;
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| 422 | ebuf.fp = NULL;
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| 423 |
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| 424 | ebuf.floc = *reading_file;
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| 425 |
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| 426 | curfile = reading_file;
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| 427 | reading_file = &ebuf.floc;
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| 428 |
|
|---|
| 429 | saved = install_conditionals (&new);
|
|---|
| 430 |
|
|---|
| 431 | r = eval (&ebuf, 1);
|
|---|
| 432 |
|
|---|
| 433 | restore_conditionals (saved);
|
|---|
| 434 |
|
|---|
| 435 | reading_file = curfile;
|
|---|
| 436 |
|
|---|
| 437 | alloca (0);
|
|---|
| 438 | return r;
|
|---|
| 439 | }
|
|---|
| 440 |
|
|---|
| 441 | |
|---|
| 442 |
|
|---|
| 443 | /* Read file FILENAME as a makefile and add its contents to the data base.
|
|---|
| 444 |
|
|---|
| 445 | SET_DEFAULT is true if we are allowed to set the default goal. */
|
|---|
| 446 |
|
|---|
| 447 |
|
|---|
| 448 | static int
|
|---|
| 449 | eval (struct ebuffer *ebuf, int set_default)
|
|---|
| 450 | {
|
|---|
| 451 | char *collapsed = 0;
|
|---|
| 452 | unsigned int collapsed_length = 0;
|
|---|
| 453 | unsigned int commands_len = 200;
|
|---|
| 454 | char *commands;
|
|---|
| 455 | unsigned int commands_idx = 0;
|
|---|
| 456 | unsigned int cmds_started, tgts_started;
|
|---|
| 457 | int ignoring = 0, in_ignored_define = 0;
|
|---|
| 458 | int no_targets = 0; /* Set when reading a rule without targets. */
|
|---|
| 459 | struct nameseq *filenames = 0;
|
|---|
| 460 | struct dep *deps = 0;
|
|---|
| 461 | long nlines = 0;
|
|---|
| 462 | int two_colon = 0;
|
|---|
| 463 | const char *pattern = 0;
|
|---|
| 464 | const char *pattern_percent;
|
|---|
| 465 | struct floc *fstart;
|
|---|
| 466 | struct floc fi;
|
|---|
| 467 |
|
|---|
| 468 | #define record_waiting_files() \
|
|---|
| 469 | do \
|
|---|
| 470 | { \
|
|---|
| 471 | if (filenames != 0) \
|
|---|
| 472 | { \
|
|---|
| 473 | fi.lineno = tgts_started; \
|
|---|
| 474 | record_files (filenames, pattern, pattern_percent, deps, \
|
|---|
| 475 | cmds_started, commands, commands_idx, two_colon, \
|
|---|
| 476 | &fi); \
|
|---|
| 477 | } \
|
|---|
| 478 | filenames = 0; \
|
|---|
| 479 | commands_idx = 0; \
|
|---|
| 480 | no_targets = 0; \
|
|---|
| 481 | pattern = 0; \
|
|---|
| 482 | } while (0)
|
|---|
| 483 |
|
|---|
| 484 | pattern_percent = 0;
|
|---|
| 485 | cmds_started = tgts_started = 1;
|
|---|
| 486 |
|
|---|
| 487 | fstart = &ebuf->floc;
|
|---|
| 488 | fi.filenm = ebuf->floc.filenm;
|
|---|
| 489 |
|
|---|
| 490 | /* Loop over lines in the file.
|
|---|
| 491 | The strategy is to accumulate target names in FILENAMES, dependencies
|
|---|
| 492 | in DEPS and commands in COMMANDS. These are used to define a rule
|
|---|
| 493 | when the start of the next rule (or eof) is encountered.
|
|---|
| 494 |
|
|---|
| 495 | When you see a "continue" in the loop below, that means we are moving on
|
|---|
| 496 | to the next line _without_ ending any rule that we happen to be working
|
|---|
| 497 | with at the moment. If you see a "goto rule_complete", then the
|
|---|
| 498 | statement we just parsed also finishes the previous rule. */
|
|---|
| 499 |
|
|---|
| 500 | commands = xmalloc (200);
|
|---|
| 501 |
|
|---|
| 502 | while (1)
|
|---|
| 503 | {
|
|---|
| 504 | unsigned int linelen;
|
|---|
| 505 | char *line;
|
|---|
| 506 | unsigned int wlen;
|
|---|
| 507 | char *p;
|
|---|
| 508 | char *p2;
|
|---|
| 509 |
|
|---|
| 510 | /* Grab the next line to be evaluated */
|
|---|
| 511 | ebuf->floc.lineno += nlines;
|
|---|
| 512 | nlines = readline (ebuf);
|
|---|
| 513 |
|
|---|
| 514 | /* If there is nothing left to eval, we're done. */
|
|---|
| 515 | if (nlines < 0)
|
|---|
| 516 | break;
|
|---|
| 517 |
|
|---|
| 518 | /* If this line is empty, skip it. */
|
|---|
| 519 | line = ebuf->buffer;
|
|---|
| 520 | if (line[0] == '\0')
|
|---|
| 521 | continue;
|
|---|
| 522 |
|
|---|
| 523 | linelen = strlen (line);
|
|---|
| 524 |
|
|---|
| 525 | /* Check for a shell command line first.
|
|---|
| 526 | If it is not one, we can stop treating tab specially. */
|
|---|
| 527 | if (line[0] == cmd_prefix)
|
|---|
| 528 | {
|
|---|
| 529 | if (no_targets)
|
|---|
| 530 | /* Ignore the commands in a rule with no targets. */
|
|---|
| 531 | continue;
|
|---|
| 532 |
|
|---|
| 533 | /* If there is no preceding rule line, don't treat this line
|
|---|
| 534 | as a command, even though it begins with a tab character.
|
|---|
| 535 | SunOS 4 make appears to behave this way. */
|
|---|
| 536 |
|
|---|
| 537 | if (filenames != 0)
|
|---|
| 538 | {
|
|---|
| 539 | if (ignoring)
|
|---|
| 540 | /* Yep, this is a shell command, and we don't care. */
|
|---|
| 541 | continue;
|
|---|
| 542 |
|
|---|
| 543 | /* Append this command line to the line being accumulated.
|
|---|
| 544 | Strip command prefix chars that appear after newlines. */
|
|---|
| 545 | if (commands_idx == 0)
|
|---|
| 546 | cmds_started = ebuf->floc.lineno;
|
|---|
| 547 |
|
|---|
| 548 | if (linelen + commands_idx > commands_len)
|
|---|
| 549 | {
|
|---|
| 550 | commands_len = (linelen + commands_idx) * 2;
|
|---|
| 551 | commands = xrealloc (commands, commands_len);
|
|---|
| 552 | }
|
|---|
| 553 | p = &commands[commands_idx];
|
|---|
| 554 | p2 = line + 1;
|
|---|
| 555 | while (--linelen)
|
|---|
| 556 | {
|
|---|
| 557 | ++commands_idx;
|
|---|
| 558 | *(p++) = *p2;
|
|---|
| 559 | if (p2[0] == '\n' && p2[1] == cmd_prefix)
|
|---|
| 560 | {
|
|---|
| 561 | ++p2;
|
|---|
| 562 | --linelen;
|
|---|
| 563 | }
|
|---|
| 564 | ++p2;
|
|---|
| 565 | }
|
|---|
| 566 | *p = '\n';
|
|---|
| 567 | ++commands_idx;
|
|---|
| 568 |
|
|---|
| 569 | continue;
|
|---|
| 570 | }
|
|---|
| 571 | }
|
|---|
| 572 |
|
|---|
| 573 | /* This line is not a shell command line. Don't worry about tabs.
|
|---|
| 574 | Get more space if we need it; we don't need to preserve the current
|
|---|
| 575 | contents of the buffer. */
|
|---|
| 576 |
|
|---|
| 577 | if (collapsed_length < linelen+1)
|
|---|
| 578 | {
|
|---|
| 579 | collapsed_length = linelen+1;
|
|---|
| 580 | if (collapsed)
|
|---|
| 581 | free (collapsed);
|
|---|
| 582 | collapsed = xmalloc (collapsed_length);
|
|---|
| 583 | }
|
|---|
| 584 | strcpy (collapsed, line);
|
|---|
| 585 | /* Collapse continuation lines. */
|
|---|
| 586 | collapse_continuations (collapsed);
|
|---|
| 587 | remove_comments (collapsed);
|
|---|
| 588 |
|
|---|
| 589 | /* Compare a word, both length and contents. */
|
|---|
| 590 | #define word1eq(s) (wlen == sizeof(s)-1 && strneq (s, p, sizeof(s)-1))
|
|---|
| 591 | p = collapsed;
|
|---|
| 592 | while (isspace ((unsigned char)*p))
|
|---|
| 593 | ++p;
|
|---|
| 594 |
|
|---|
| 595 | if (*p == '\0')
|
|---|
| 596 | /* This line is completely empty--ignore it. */
|
|---|
| 597 | continue;
|
|---|
| 598 |
|
|---|
| 599 | /* Find the end of the first token. Note we don't need to worry about
|
|---|
| 600 | * ":" here since we compare tokens by length (so "export" will never
|
|---|
| 601 | * be equal to "export:").
|
|---|
| 602 | */
|
|---|
| 603 | for (p2 = p+1; *p2 != '\0' && !isspace ((unsigned char)*p2); ++p2)
|
|---|
| 604 | ;
|
|---|
| 605 | wlen = p2 - p;
|
|---|
| 606 |
|
|---|
| 607 | /* Find the start of the second token. If it looks like a target or
|
|---|
| 608 | variable definition it can't be a preprocessor token so skip
|
|---|
| 609 | them--this allows variables/targets named `ifdef', `export', etc. */
|
|---|
| 610 | while (isspace ((unsigned char)*p2))
|
|---|
| 611 | ++p2;
|
|---|
| 612 |
|
|---|
| 613 | if ((p2[0] == ':' || p2[0] == '+' || p2[0] == '=') && p2[1] == '\0')
|
|---|
| 614 | {
|
|---|
| 615 | /* It can't be a preprocessor token so skip it if we're ignoring */
|
|---|
| 616 | if (ignoring)
|
|---|
| 617 | continue;
|
|---|
| 618 |
|
|---|
| 619 | goto skip_conditionals;
|
|---|
| 620 | }
|
|---|
| 621 |
|
|---|
| 622 | /* We must first check for conditional and `define' directives before
|
|---|
| 623 | ignoring anything, since they control what we will do with
|
|---|
| 624 | following lines. */
|
|---|
| 625 |
|
|---|
| 626 | if (!in_ignored_define)
|
|---|
| 627 | {
|
|---|
| 628 | int i = conditional_line (p, wlen, fstart);
|
|---|
| 629 | if (i != -2)
|
|---|
| 630 | {
|
|---|
| 631 | if (i == -1)
|
|---|
| 632 | fatal (fstart, _("invalid syntax in conditional"));
|
|---|
| 633 |
|
|---|
| 634 | ignoring = i;
|
|---|
| 635 | continue;
|
|---|
| 636 | }
|
|---|
| 637 | }
|
|---|
| 638 |
|
|---|
| 639 | if (word1eq ("endef"))
|
|---|
| 640 | {
|
|---|
| 641 | if (!in_ignored_define)
|
|---|
| 642 | fatal (fstart, _("extraneous `endef'"));
|
|---|
| 643 | in_ignored_define = 0;
|
|---|
| 644 | continue;
|
|---|
| 645 | }
|
|---|
| 646 |
|
|---|
| 647 | if (word1eq ("define"))
|
|---|
| 648 | {
|
|---|
| 649 | if (ignoring)
|
|---|
| 650 | in_ignored_define = 1;
|
|---|
| 651 | else
|
|---|
| 652 | {
|
|---|
| 653 | if (*p2 == '\0')
|
|---|
| 654 | fatal (fstart, _("empty variable name"));
|
|---|
| 655 |
|
|---|
| 656 | /* Let the variable name be the whole rest of the line,
|
|---|
| 657 | with trailing blanks stripped (comments have already been
|
|---|
| 658 | removed), so it could be a complex variable/function
|
|---|
| 659 | reference that might contain blanks. */
|
|---|
| 660 | p = strchr (p2, '\0');
|
|---|
| 661 | while (isblank ((unsigned char)p[-1]))
|
|---|
| 662 | --p;
|
|---|
| 663 | do_define (p2, p - p2, o_file, ebuf);
|
|---|
| 664 | }
|
|---|
| 665 | continue;
|
|---|
| 666 | }
|
|---|
| 667 |
|
|---|
| 668 | if (word1eq ("override"))
|
|---|
| 669 | {
|
|---|
| 670 | if (*p2 == '\0')
|
|---|
| 671 | error (fstart, _("empty `override' directive"));
|
|---|
| 672 |
|
|---|
| 673 | if (strneq (p2, "define", 6)
|
|---|
| 674 | && (isblank ((unsigned char)p2[6]) || p2[6] == '\0'))
|
|---|
| 675 | {
|
|---|
| 676 | if (ignoring)
|
|---|
| 677 | in_ignored_define = 1;
|
|---|
| 678 | else
|
|---|
| 679 | {
|
|---|
| 680 | p2 = next_token (p2 + 6);
|
|---|
| 681 | if (*p2 == '\0')
|
|---|
| 682 | fatal (fstart, _("empty variable name"));
|
|---|
| 683 |
|
|---|
| 684 | /* Let the variable name be the whole rest of the line,
|
|---|
| 685 | with trailing blanks stripped (comments have already been
|
|---|
| 686 | removed), so it could be a complex variable/function
|
|---|
| 687 | reference that might contain blanks. */
|
|---|
| 688 | p = strchr (p2, '\0');
|
|---|
| 689 | while (isblank ((unsigned char)p[-1]))
|
|---|
| 690 | --p;
|
|---|
| 691 | do_define (p2, p - p2, o_override, ebuf);
|
|---|
| 692 | }
|
|---|
| 693 | }
|
|---|
| 694 | else if (!ignoring
|
|---|
| 695 | && !try_variable_definition (fstart, p2, o_override, 0))
|
|---|
| 696 | error (fstart, _("invalid `override' directive"));
|
|---|
| 697 |
|
|---|
| 698 | continue;
|
|---|
| 699 | }
|
|---|
| 700 |
|
|---|
| 701 | if (ignoring)
|
|---|
| 702 | /* Ignore the line. We continue here so conditionals
|
|---|
| 703 | can appear in the middle of a rule. */
|
|---|
| 704 | continue;
|
|---|
| 705 |
|
|---|
| 706 | if (word1eq ("export"))
|
|---|
| 707 | {
|
|---|
| 708 | /* 'export' by itself causes everything to be exported. */
|
|---|
| 709 | if (*p2 == '\0')
|
|---|
| 710 | export_all_variables = 1;
|
|---|
| 711 | else
|
|---|
| 712 | {
|
|---|
| 713 | struct variable *v;
|
|---|
| 714 |
|
|---|
| 715 | v = try_variable_definition (fstart, p2, o_file, 0);
|
|---|
| 716 | if (v != 0)
|
|---|
| 717 | v->export = v_export;
|
|---|
| 718 | else
|
|---|
| 719 | {
|
|---|
| 720 | unsigned int l;
|
|---|
| 721 | const char *cp;
|
|---|
| 722 | char *ap;
|
|---|
| 723 |
|
|---|
| 724 | /* Expand the line so we can use indirect and constructed
|
|---|
| 725 | variable names in an export command. */
|
|---|
| 726 | cp = ap = allocated_variable_expand (p2);
|
|---|
| 727 |
|
|---|
| 728 | for (p = find_next_token (&cp, &l); p != 0;
|
|---|
| 729 | p = find_next_token (&cp, &l))
|
|---|
| 730 | {
|
|---|
| 731 | v = lookup_variable (p, l);
|
|---|
| 732 | if (v == 0)
|
|---|
| 733 | v = define_variable_loc (p, l, "", o_file, 0, fstart);
|
|---|
| 734 | v->export = v_export;
|
|---|
| 735 | }
|
|---|
| 736 |
|
|---|
| 737 | free (ap);
|
|---|
| 738 | }
|
|---|
| 739 | }
|
|---|
| 740 | goto rule_complete;
|
|---|
| 741 | }
|
|---|
| 742 |
|
|---|
| 743 | if (word1eq ("unexport"))
|
|---|
| 744 | {
|
|---|
| 745 | if (*p2 == '\0')
|
|---|
| 746 | export_all_variables = 0;
|
|---|
| 747 | else
|
|---|
| 748 | {
|
|---|
| 749 | unsigned int l;
|
|---|
| 750 | struct variable *v;
|
|---|
| 751 | const char *cp;
|
|---|
| 752 | char *ap;
|
|---|
| 753 |
|
|---|
| 754 | /* Expand the line so we can use indirect and constructed
|
|---|
| 755 | variable names in an unexport command. */
|
|---|
| 756 | cp = ap = allocated_variable_expand (p2);
|
|---|
| 757 |
|
|---|
| 758 | for (p = find_next_token (&cp, &l); p != 0;
|
|---|
| 759 | p = find_next_token (&cp, &l))
|
|---|
| 760 | {
|
|---|
| 761 | v = lookup_variable (p, l);
|
|---|
| 762 | if (v == 0)
|
|---|
| 763 | v = define_variable_loc (p, l, "", o_file, 0, fstart);
|
|---|
| 764 |
|
|---|
| 765 | v->export = v_noexport;
|
|---|
| 766 | }
|
|---|
| 767 |
|
|---|
| 768 | free (ap);
|
|---|
| 769 | }
|
|---|
| 770 | goto rule_complete;
|
|---|
| 771 | }
|
|---|
| 772 |
|
|---|
| 773 | skip_conditionals:
|
|---|
| 774 | if (word1eq ("vpath"))
|
|---|
| 775 | {
|
|---|
| 776 | const char *cp;
|
|---|
| 777 | char *vpat;
|
|---|
| 778 | unsigned int l;
|
|---|
| 779 | cp = variable_expand (p2);
|
|---|
| 780 | p = find_next_token (&cp, &l);
|
|---|
| 781 | if (p != 0)
|
|---|
| 782 | {
|
|---|
| 783 | vpat = savestring (p, l);
|
|---|
| 784 | p = find_next_token (&cp, &l);
|
|---|
| 785 | /* No searchpath means remove all previous
|
|---|
| 786 | selective VPATH's with the same pattern. */
|
|---|
| 787 | }
|
|---|
| 788 | else
|
|---|
| 789 | /* No pattern means remove all previous selective VPATH's. */
|
|---|
| 790 | vpat = 0;
|
|---|
| 791 | construct_vpath_list (vpat, p);
|
|---|
| 792 | if (vpat != 0)
|
|---|
| 793 | free (vpat);
|
|---|
| 794 |
|
|---|
| 795 | goto rule_complete;
|
|---|
| 796 | }
|
|---|
| 797 |
|
|---|
| 798 | if (word1eq ("include") || word1eq ("-include") || word1eq ("sinclude"))
|
|---|
| 799 | {
|
|---|
| 800 | /* We have found an `include' line specifying a nested
|
|---|
| 801 | makefile to be read at this point. */
|
|---|
| 802 | struct conditionals *save;
|
|---|
| 803 | struct conditionals new_conditionals;
|
|---|
| 804 | struct nameseq *files;
|
|---|
| 805 | /* "-include" (vs "include") says no error if the file does not
|
|---|
| 806 | exist. "sinclude" is an alias for this from SGI. */
|
|---|
| 807 | int noerror = (p[0] != 'i');
|
|---|
| 808 |
|
|---|
| 809 | p = allocated_variable_expand (p2);
|
|---|
| 810 |
|
|---|
| 811 | /* If no filenames, it's a no-op. */
|
|---|
| 812 | if (*p == '\0')
|
|---|
| 813 | {
|
|---|
| 814 | free (p);
|
|---|
| 815 | continue;
|
|---|
| 816 | }
|
|---|
| 817 |
|
|---|
| 818 | /* Parse the list of file names. */
|
|---|
| 819 | p2 = p;
|
|---|
| 820 | files = multi_glob (parse_file_seq (&p2, '\0',
|
|---|
| 821 | sizeof (struct nameseq),
|
|---|
| 822 | 1),
|
|---|
| 823 | sizeof (struct nameseq));
|
|---|
| 824 | free (p);
|
|---|
| 825 |
|
|---|
| 826 | /* Save the state of conditionals and start
|
|---|
| 827 | the included makefile with a clean slate. */
|
|---|
| 828 | save = install_conditionals (&new_conditionals);
|
|---|
| 829 |
|
|---|
| 830 | /* Record the rules that are waiting so they will determine
|
|---|
| 831 | the default goal before those in the included makefile. */
|
|---|
| 832 | record_waiting_files ();
|
|---|
| 833 |
|
|---|
| 834 | /* Read each included makefile. */
|
|---|
| 835 | while (files != 0)
|
|---|
| 836 | {
|
|---|
| 837 | struct nameseq *next = files->next;
|
|---|
| 838 | const char *name = files->name;
|
|---|
| 839 | int r;
|
|---|
| 840 |
|
|---|
| 841 | free (files);
|
|---|
| 842 | files = next;
|
|---|
| 843 |
|
|---|
| 844 | r = eval_makefile (name, (RM_INCLUDED | RM_NO_TILDE
|
|---|
| 845 | | (noerror ? RM_DONTCARE : 0)));
|
|---|
| 846 | if (!r && !noerror)
|
|---|
| 847 | error (fstart, "%s: %s", name, strerror (errno));
|
|---|
| 848 | }
|
|---|
| 849 |
|
|---|
| 850 | /* Restore conditional state. */
|
|---|
| 851 | restore_conditionals (save);
|
|---|
| 852 |
|
|---|
| 853 | goto rule_complete;
|
|---|
| 854 | }
|
|---|
| 855 |
|
|---|
| 856 | if (try_variable_definition (fstart, p, o_file, 0))
|
|---|
| 857 | /* This line has been dealt with. */
|
|---|
| 858 | goto rule_complete;
|
|---|
| 859 |
|
|---|
| 860 | /* This line starts with a tab but was not caught above because there
|
|---|
| 861 | was no preceding target, and the line might have been usable as a
|
|---|
| 862 | variable definition. But now we know it is definitely lossage. */
|
|---|
| 863 | if (line[0] == cmd_prefix)
|
|---|
| 864 | fatal(fstart, _("recipe commences before first target"));
|
|---|
| 865 |
|
|---|
| 866 | /* This line describes some target files. This is complicated by
|
|---|
| 867 | the existence of target-specific variables, because we can't
|
|---|
| 868 | expand the entire line until we know if we have one or not. So
|
|---|
| 869 | we expand the line word by word until we find the first `:',
|
|---|
| 870 | then check to see if it's a target-specific variable.
|
|---|
| 871 |
|
|---|
| 872 | In this algorithm, `lb_next' will point to the beginning of the
|
|---|
| 873 | unexpanded parts of the input buffer, while `p2' points to the
|
|---|
| 874 | parts of the expanded buffer we haven't searched yet. */
|
|---|
| 875 |
|
|---|
| 876 | {
|
|---|
| 877 | enum make_word_type wtype;
|
|---|
| 878 | enum variable_origin v_origin;
|
|---|
| 879 | int exported;
|
|---|
| 880 | char *cmdleft, *semip, *lb_next;
|
|---|
| 881 | unsigned int plen = 0;
|
|---|
| 882 | char *colonp;
|
|---|
| 883 | const char *end, *beg; /* Helpers for whitespace stripping. */
|
|---|
| 884 |
|
|---|
| 885 | /* Record the previous rule. */
|
|---|
| 886 |
|
|---|
| 887 | record_waiting_files ();
|
|---|
| 888 | tgts_started = fstart->lineno;
|
|---|
| 889 |
|
|---|
| 890 | /* Search the line for an unquoted ; that is not after an
|
|---|
| 891 | unquoted #. */
|
|---|
| 892 | cmdleft = find_char_unquote (line, ';', '#', 0, 1);
|
|---|
| 893 | if (cmdleft != 0 && *cmdleft == '#')
|
|---|
| 894 | {
|
|---|
| 895 | /* We found a comment before a semicolon. */
|
|---|
| 896 | *cmdleft = '\0';
|
|---|
| 897 | cmdleft = 0;
|
|---|
| 898 | }
|
|---|
| 899 | else if (cmdleft != 0)
|
|---|
| 900 | /* Found one. Cut the line short there before expanding it. */
|
|---|
| 901 | *(cmdleft++) = '\0';
|
|---|
| 902 | semip = cmdleft;
|
|---|
| 903 |
|
|---|
| 904 | collapse_continuations (line);
|
|---|
| 905 |
|
|---|
| 906 | /* We can't expand the entire line, since if it's a per-target
|
|---|
| 907 | variable we don't want to expand it. So, walk from the
|
|---|
| 908 | beginning, expanding as we go, and looking for "interesting"
|
|---|
| 909 | chars. The first word is always expandable. */
|
|---|
| 910 | wtype = get_next_mword(line, NULL, &lb_next, &wlen);
|
|---|
| 911 | switch (wtype)
|
|---|
| 912 | {
|
|---|
| 913 | case w_eol:
|
|---|
| 914 | if (cmdleft != 0)
|
|---|
| 915 | fatal(fstart, _("missing rule before recipe"));
|
|---|
| 916 | /* This line contained something but turned out to be nothing
|
|---|
| 917 | but whitespace (a comment?). */
|
|---|
| 918 | continue;
|
|---|
| 919 |
|
|---|
| 920 | case w_colon:
|
|---|
| 921 | case w_dcolon:
|
|---|
| 922 | /* We accept and ignore rules without targets for
|
|---|
| 923 | compatibility with SunOS 4 make. */
|
|---|
| 924 | no_targets = 1;
|
|---|
| 925 | continue;
|
|---|
| 926 |
|
|---|
| 927 | default:
|
|---|
| 928 | break;
|
|---|
| 929 | }
|
|---|
| 930 |
|
|---|
| 931 | p2 = variable_expand_string(NULL, lb_next, wlen);
|
|---|
| 932 |
|
|---|
| 933 | while (1)
|
|---|
| 934 | {
|
|---|
| 935 | lb_next += wlen;
|
|---|
| 936 | if (cmdleft == 0)
|
|---|
| 937 | {
|
|---|
| 938 | /* Look for a semicolon in the expanded line. */
|
|---|
| 939 | cmdleft = find_char_unquote (p2, ';', 0, 0, 0);
|
|---|
| 940 |
|
|---|
| 941 | if (cmdleft != 0)
|
|---|
| 942 | {
|
|---|
| 943 | unsigned long p2_off = p2 - variable_buffer;
|
|---|
| 944 | unsigned long cmd_off = cmdleft - variable_buffer;
|
|---|
| 945 | char *pend = p2 + strlen(p2);
|
|---|
| 946 |
|
|---|
| 947 | /* Append any remnants of lb, then cut the line short
|
|---|
| 948 | at the semicolon. */
|
|---|
| 949 | *cmdleft = '\0';
|
|---|
| 950 |
|
|---|
| 951 | /* One school of thought says that you shouldn't expand
|
|---|
| 952 | here, but merely copy, since now you're beyond a ";"
|
|---|
| 953 | and into a command script. However, the old parser
|
|---|
| 954 | expanded the whole line, so we continue that for
|
|---|
| 955 | backwards-compatiblity. Also, it wouldn't be
|
|---|
| 956 | entirely consistent, since we do an unconditional
|
|---|
| 957 | expand below once we know we don't have a
|
|---|
| 958 | target-specific variable. */
|
|---|
| 959 | (void)variable_expand_string(pend, lb_next, (long)-1);
|
|---|
| 960 | lb_next += strlen(lb_next);
|
|---|
| 961 | p2 = variable_buffer + p2_off;
|
|---|
| 962 | cmdleft = variable_buffer + cmd_off + 1;
|
|---|
| 963 | }
|
|---|
| 964 | }
|
|---|
| 965 |
|
|---|
| 966 | colonp = find_char_unquote(p2, ':', 0, 0, 0);
|
|---|
| 967 | #ifdef HAVE_DOS_PATHS
|
|---|
| 968 | /* The drive spec brain-damage strikes again... */
|
|---|
| 969 | /* Note that the only separators of targets in this context
|
|---|
| 970 | are whitespace and a left paren. If others are possible,
|
|---|
| 971 | they should be added to the string in the call to index. */
|
|---|
| 972 | while (colonp && (colonp[1] == '/' || colonp[1] == '\\') &&
|
|---|
| 973 | colonp > p2 && isalpha ((unsigned char)colonp[-1]) &&
|
|---|
| 974 | (colonp == p2 + 1 || strchr (" \t(", colonp[-2]) != 0))
|
|---|
| 975 | colonp = find_char_unquote(colonp + 1, ':', 0, 0, 0);
|
|---|
| 976 | #endif
|
|---|
| 977 | if (colonp != 0)
|
|---|
| 978 | break;
|
|---|
| 979 |
|
|---|
| 980 | wtype = get_next_mword(lb_next, NULL, &lb_next, &wlen);
|
|---|
| 981 | if (wtype == w_eol)
|
|---|
| 982 | break;
|
|---|
| 983 |
|
|---|
| 984 | p2 += strlen(p2);
|
|---|
| 985 | *(p2++) = ' ';
|
|---|
| 986 | p2 = variable_expand_string(p2, lb_next, wlen);
|
|---|
| 987 | /* We don't need to worry about cmdleft here, because if it was
|
|---|
| 988 | found in the variable_buffer the entire buffer has already
|
|---|
| 989 | been expanded... we'll never get here. */
|
|---|
| 990 | }
|
|---|
| 991 |
|
|---|
| 992 | p2 = next_token (variable_buffer);
|
|---|
| 993 |
|
|---|
| 994 | /* If the word we're looking at is EOL, see if there's _anything_
|
|---|
| 995 | on the line. If not, a variable expanded to nothing, so ignore
|
|---|
| 996 | it. If so, we can't parse this line so punt. */
|
|---|
| 997 | if (wtype == w_eol)
|
|---|
| 998 | {
|
|---|
| 999 | if (*p2 != '\0')
|
|---|
| 1000 | /* There's no need to be ivory-tower about this: check for
|
|---|
| 1001 | one of the most common bugs found in makefiles... */
|
|---|
| 1002 | fatal (fstart, _("missing separator%s"),
|
|---|
| 1003 | (cmd_prefix == '\t' && !strneq(line, " ", 8))
|
|---|
| 1004 | ? "" : _(" (did you mean TAB instead of 8 spaces?)"));
|
|---|
| 1005 | continue;
|
|---|
| 1006 | }
|
|---|
| 1007 |
|
|---|
| 1008 | /* Make the colon the end-of-string so we know where to stop
|
|---|
| 1009 | looking for targets. */
|
|---|
| 1010 | *colonp = '\0';
|
|---|
| 1011 | filenames = multi_glob (parse_file_seq (&p2, '\0',
|
|---|
| 1012 | sizeof (struct nameseq),
|
|---|
| 1013 | 1),
|
|---|
| 1014 | sizeof (struct nameseq));
|
|---|
| 1015 | *p2 = ':';
|
|---|
| 1016 |
|
|---|
| 1017 | if (!filenames)
|
|---|
| 1018 | {
|
|---|
| 1019 | /* We accept and ignore rules without targets for
|
|---|
| 1020 | compatibility with SunOS 4 make. */
|
|---|
| 1021 | no_targets = 1;
|
|---|
| 1022 | continue;
|
|---|
| 1023 | }
|
|---|
| 1024 | /* This should never be possible; we handled it above. */
|
|---|
| 1025 | assert (*p2 != '\0');
|
|---|
| 1026 | ++p2;
|
|---|
| 1027 |
|
|---|
| 1028 | /* Is this a one-colon or two-colon entry? */
|
|---|
| 1029 | two_colon = *p2 == ':';
|
|---|
| 1030 | if (two_colon)
|
|---|
| 1031 | p2++;
|
|---|
| 1032 |
|
|---|
| 1033 | /* Test to see if it's a target-specific variable. Copy the rest
|
|---|
| 1034 | of the buffer over, possibly temporarily (we'll expand it later
|
|---|
| 1035 | if it's not a target-specific variable). PLEN saves the length
|
|---|
| 1036 | of the unparsed section of p2, for later. */
|
|---|
| 1037 | if (*lb_next != '\0')
|
|---|
| 1038 | {
|
|---|
| 1039 | unsigned int l = p2 - variable_buffer;
|
|---|
| 1040 | plen = strlen (p2);
|
|---|
| 1041 | variable_buffer_output (p2+plen, lb_next, strlen (lb_next)+1);
|
|---|
| 1042 | p2 = variable_buffer + l;
|
|---|
| 1043 | }
|
|---|
| 1044 |
|
|---|
| 1045 | /* See if it's an "override" or "export" keyword; if so see if what
|
|---|
| 1046 | comes after it looks like a variable definition. */
|
|---|
| 1047 |
|
|---|
| 1048 | wtype = get_next_mword (p2, NULL, &p, &wlen);
|
|---|
| 1049 |
|
|---|
| 1050 | v_origin = o_file;
|
|---|
| 1051 | exported = 0;
|
|---|
| 1052 | if (wtype == w_static)
|
|---|
| 1053 | {
|
|---|
| 1054 | if (word1eq ("override"))
|
|---|
| 1055 | {
|
|---|
| 1056 | v_origin = o_override;
|
|---|
| 1057 | wtype = get_next_mword (p+wlen, NULL, &p, &wlen);
|
|---|
| 1058 | }
|
|---|
| 1059 | else if (word1eq ("export"))
|
|---|
| 1060 | {
|
|---|
| 1061 | exported = 1;
|
|---|
| 1062 | wtype = get_next_mword (p+wlen, NULL, &p, &wlen);
|
|---|
| 1063 | }
|
|---|
| 1064 | }
|
|---|
| 1065 |
|
|---|
| 1066 | if (wtype != w_eol)
|
|---|
| 1067 | wtype = get_next_mword (p+wlen, NULL, NULL, NULL);
|
|---|
| 1068 |
|
|---|
| 1069 | if (wtype == w_varassign)
|
|---|
| 1070 | {
|
|---|
| 1071 | /* If there was a semicolon found, add it back, plus anything
|
|---|
| 1072 | after it. */
|
|---|
| 1073 | if (semip)
|
|---|
| 1074 | {
|
|---|
| 1075 | unsigned int l = p - variable_buffer;
|
|---|
| 1076 | *(--semip) = ';';
|
|---|
| 1077 | variable_buffer_output (p2 + strlen (p2),
|
|---|
| 1078 | semip, strlen (semip)+1);
|
|---|
| 1079 | p = variable_buffer + l;
|
|---|
| 1080 | }
|
|---|
| 1081 | record_target_var (filenames, p, v_origin, exported, fstart);
|
|---|
| 1082 | filenames = 0;
|
|---|
| 1083 | continue;
|
|---|
| 1084 | }
|
|---|
| 1085 |
|
|---|
| 1086 | /* This is a normal target, _not_ a target-specific variable.
|
|---|
| 1087 | Unquote any = in the dependency list. */
|
|---|
| 1088 | find_char_unquote (lb_next, '=', 0, 0, 0);
|
|---|
| 1089 |
|
|---|
| 1090 | /* We have some targets, so don't ignore the following commands. */
|
|---|
| 1091 | no_targets = 0;
|
|---|
| 1092 |
|
|---|
| 1093 | /* Expand the dependencies, etc. */
|
|---|
| 1094 | if (*lb_next != '\0')
|
|---|
| 1095 | {
|
|---|
| 1096 | unsigned int l = p2 - variable_buffer;
|
|---|
| 1097 | (void) variable_expand_string (p2 + plen, lb_next, (long)-1);
|
|---|
| 1098 | p2 = variable_buffer + l;
|
|---|
| 1099 |
|
|---|
| 1100 | /* Look for a semicolon in the expanded line. */
|
|---|
| 1101 | if (cmdleft == 0)
|
|---|
| 1102 | {
|
|---|
| 1103 | cmdleft = find_char_unquote (p2, ';', 0, 0, 0);
|
|---|
| 1104 | if (cmdleft != 0)
|
|---|
| 1105 | *(cmdleft++) = '\0';
|
|---|
| 1106 | }
|
|---|
| 1107 | }
|
|---|
| 1108 |
|
|---|
| 1109 | /* Is this a static pattern rule: `target: %targ: %dep; ...'? */
|
|---|
| 1110 | p = strchr (p2, ':');
|
|---|
| 1111 | while (p != 0 && p[-1] == '\\')
|
|---|
| 1112 | {
|
|---|
| 1113 | register char *q = &p[-1];
|
|---|
| 1114 | register int backslash = 0;
|
|---|
| 1115 | while (*q-- == '\\')
|
|---|
| 1116 | backslash = !backslash;
|
|---|
| 1117 | if (backslash)
|
|---|
| 1118 | p = strchr (p + 1, ':');
|
|---|
| 1119 | else
|
|---|
| 1120 | break;
|
|---|
| 1121 | }
|
|---|
| 1122 | #ifdef _AMIGA
|
|---|
| 1123 | /* Here, the situation is quite complicated. Let's have a look
|
|---|
| 1124 | at a couple of targets:
|
|---|
| 1125 |
|
|---|
| 1126 | install: dev:make
|
|---|
| 1127 |
|
|---|
| 1128 | dev:make: make
|
|---|
| 1129 |
|
|---|
| 1130 | dev:make:: xyz
|
|---|
| 1131 |
|
|---|
| 1132 | The rule is that it's only a target, if there are TWO :'s
|
|---|
| 1133 | OR a space around the :.
|
|---|
| 1134 | */
|
|---|
| 1135 | if (p && !(isspace ((unsigned char)p[1]) || !p[1]
|
|---|
| 1136 | || isspace ((unsigned char)p[-1])))
|
|---|
| 1137 | p = 0;
|
|---|
| 1138 | #endif
|
|---|
| 1139 | #ifdef HAVE_DOS_PATHS
|
|---|
| 1140 | {
|
|---|
| 1141 | int check_again;
|
|---|
| 1142 | do {
|
|---|
| 1143 | check_again = 0;
|
|---|
| 1144 | /* For DOS-style paths, skip a "C:\..." or a "C:/..." */
|
|---|
| 1145 | if (p != 0 && (p[1] == '\\' || p[1] == '/') &&
|
|---|
| 1146 | isalpha ((unsigned char)p[-1]) &&
|
|---|
| 1147 | (p == p2 + 1 || strchr (" \t:(", p[-2]) != 0)) {
|
|---|
| 1148 | p = strchr (p + 1, ':');
|
|---|
| 1149 | check_again = 1;
|
|---|
| 1150 | }
|
|---|
| 1151 | } while (check_again);
|
|---|
| 1152 | }
|
|---|
| 1153 | #endif
|
|---|
| 1154 | if (p != 0)
|
|---|
| 1155 | {
|
|---|
| 1156 | struct nameseq *target;
|
|---|
| 1157 | target = parse_file_seq (&p2, ':', sizeof (struct nameseq), 1);
|
|---|
| 1158 | ++p2;
|
|---|
| 1159 | if (target == 0)
|
|---|
| 1160 | fatal (fstart, _("missing target pattern"));
|
|---|
| 1161 | else if (target->next != 0)
|
|---|
| 1162 | fatal (fstart, _("multiple target patterns"));
|
|---|
| 1163 | pattern_percent = find_percent_cached (&target->name);
|
|---|
| 1164 | pattern = target->name;
|
|---|
| 1165 | if (pattern_percent == 0)
|
|---|
| 1166 | fatal (fstart, _("target pattern contains no `%%'"));
|
|---|
| 1167 | free (target);
|
|---|
| 1168 | }
|
|---|
| 1169 | else
|
|---|
| 1170 | pattern = 0;
|
|---|
| 1171 |
|
|---|
| 1172 | /* Strip leading and trailing whitespaces. */
|
|---|
| 1173 | beg = p2;
|
|---|
| 1174 | end = beg + strlen (beg) - 1;
|
|---|
| 1175 | strip_whitespace (&beg, &end);
|
|---|
| 1176 |
|
|---|
| 1177 | if (beg <= end && *beg != '\0')
|
|---|
| 1178 | {
|
|---|
| 1179 | /* Put all the prerequisites here; they'll be parsed later. */
|
|---|
| 1180 | deps = alloc_dep ();
|
|---|
| 1181 | deps->name = strcache_add_len (beg, end - beg + 1);
|
|---|
| 1182 | }
|
|---|
| 1183 | else
|
|---|
| 1184 | deps = 0;
|
|---|
| 1185 |
|
|---|
| 1186 | commands_idx = 0;
|
|---|
| 1187 | if (cmdleft != 0)
|
|---|
| 1188 | {
|
|---|
| 1189 | /* Semicolon means rest of line is a command. */
|
|---|
| 1190 | unsigned int l = strlen (cmdleft);
|
|---|
| 1191 |
|
|---|
| 1192 | cmds_started = fstart->lineno;
|
|---|
| 1193 |
|
|---|
| 1194 | /* Add this command line to the buffer. */
|
|---|
| 1195 | if (l + 2 > commands_len)
|
|---|
| 1196 | {
|
|---|
| 1197 | commands_len = (l + 2) * 2;
|
|---|
| 1198 | commands = xrealloc (commands, commands_len);
|
|---|
| 1199 | }
|
|---|
| 1200 | memcpy (commands, cmdleft, l);
|
|---|
| 1201 | commands_idx += l;
|
|---|
| 1202 | commands[commands_idx++] = '\n';
|
|---|
| 1203 | }
|
|---|
| 1204 |
|
|---|
| 1205 | /* Determine if this target should be made default. We used to do
|
|---|
| 1206 | this in record_files() but because of the delayed target recording
|
|---|
| 1207 | and because preprocessor directives are legal in target's commands
|
|---|
| 1208 | it is too late. Consider this fragment for example:
|
|---|
| 1209 |
|
|---|
| 1210 | foo:
|
|---|
| 1211 |
|
|---|
| 1212 | ifeq ($(.DEFAULT_GOAL),foo)
|
|---|
| 1213 | ...
|
|---|
| 1214 | endif
|
|---|
| 1215 |
|
|---|
| 1216 | Because the target is not recorded until after ifeq directive is
|
|---|
| 1217 | evaluated the .DEFAULT_GOAL does not contain foo yet as one
|
|---|
| 1218 | would expect. Because of this we have to move some of the logic
|
|---|
| 1219 | here. */
|
|---|
| 1220 |
|
|---|
| 1221 | if (**default_goal_name == '\0' && set_default)
|
|---|
| 1222 | {
|
|---|
| 1223 | const char *name;
|
|---|
| 1224 | struct dep *d;
|
|---|
| 1225 | struct nameseq *t = filenames;
|
|---|
| 1226 |
|
|---|
| 1227 | for (; t != 0; t = t->next)
|
|---|
| 1228 | {
|
|---|
| 1229 | int reject = 0;
|
|---|
| 1230 | name = t->name;
|
|---|
| 1231 |
|
|---|
| 1232 | /* We have nothing to do if this is an implicit rule. */
|
|---|
| 1233 | if (strchr (name, '%') != 0)
|
|---|
| 1234 | break;
|
|---|
| 1235 |
|
|---|
| 1236 | /* See if this target's name does not start with a `.',
|
|---|
| 1237 | unless it contains a slash. */
|
|---|
| 1238 | if (*name == '.' && strchr (name, '/') == 0
|
|---|
| 1239 | #ifdef HAVE_DOS_PATHS
|
|---|
| 1240 | && strchr (name, '\\') == 0
|
|---|
| 1241 | #endif
|
|---|
| 1242 | )
|
|---|
| 1243 | continue;
|
|---|
| 1244 |
|
|---|
| 1245 |
|
|---|
| 1246 | /* If this file is a suffix, don't let it be
|
|---|
| 1247 | the default goal file. */
|
|---|
| 1248 | for (d = suffix_file->deps; d != 0; d = d->next)
|
|---|
| 1249 | {
|
|---|
| 1250 | register struct dep *d2;
|
|---|
| 1251 | if (*dep_name (d) != '.' && streq (name, dep_name (d)))
|
|---|
| 1252 | {
|
|---|
| 1253 | reject = 1;
|
|---|
| 1254 | break;
|
|---|
| 1255 | }
|
|---|
| 1256 | for (d2 = suffix_file->deps; d2 != 0; d2 = d2->next)
|
|---|
| 1257 | {
|
|---|
| 1258 | unsigned int l = strlen (dep_name (d2));
|
|---|
| 1259 | if (!strneq (name, dep_name (d2), l))
|
|---|
| 1260 | continue;
|
|---|
| 1261 | if (streq (name + l, dep_name (d)))
|
|---|
| 1262 | {
|
|---|
| 1263 | reject = 1;
|
|---|
| 1264 | break;
|
|---|
| 1265 | }
|
|---|
| 1266 | }
|
|---|
| 1267 |
|
|---|
| 1268 | if (reject)
|
|---|
| 1269 | break;
|
|---|
| 1270 | }
|
|---|
| 1271 |
|
|---|
| 1272 | if (!reject)
|
|---|
| 1273 | {
|
|---|
| 1274 | define_variable_global (".DEFAULT_GOAL", 13, t->name,
|
|---|
| 1275 | o_file, 0, NILF);
|
|---|
| 1276 | break;
|
|---|
| 1277 | }
|
|---|
| 1278 | }
|
|---|
| 1279 | }
|
|---|
| 1280 |
|
|---|
| 1281 | continue;
|
|---|
| 1282 | }
|
|---|
| 1283 |
|
|---|
| 1284 | /* We get here except in the case that we just read a rule line.
|
|---|
| 1285 | Record now the last rule we read, so following spurious
|
|---|
| 1286 | commands are properly diagnosed. */
|
|---|
| 1287 | rule_complete:
|
|---|
| 1288 | record_waiting_files ();
|
|---|
| 1289 | }
|
|---|
| 1290 |
|
|---|
| 1291 | #undef word1eq
|
|---|
| 1292 |
|
|---|
| 1293 | if (conditionals->if_cmds)
|
|---|
| 1294 | fatal (fstart, _("missing `endif'"));
|
|---|
| 1295 |
|
|---|
| 1296 | /* At eof, record the last rule. */
|
|---|
| 1297 | record_waiting_files ();
|
|---|
| 1298 |
|
|---|
| 1299 | if (collapsed)
|
|---|
| 1300 | free (collapsed);
|
|---|
| 1301 | free (commands);
|
|---|
| 1302 |
|
|---|
| 1303 | return 1;
|
|---|
| 1304 | }
|
|---|
| 1305 | |
|---|
| 1306 |
|
|---|
| 1307 |
|
|---|
| 1308 | /* Remove comments from LINE.
|
|---|
| 1309 | This is done by copying the text at LINE onto itself. */
|
|---|
| 1310 |
|
|---|
| 1311 | static void
|
|---|
| 1312 | remove_comments (char *line)
|
|---|
| 1313 | {
|
|---|
| 1314 | char *comment;
|
|---|
| 1315 |
|
|---|
| 1316 | comment = find_char_unquote (line, '#', 0, 0, 0);
|
|---|
| 1317 |
|
|---|
| 1318 | if (comment != 0)
|
|---|
| 1319 | /* Cut off the line at the #. */
|
|---|
| 1320 | *comment = '\0';
|
|---|
| 1321 | }
|
|---|
| 1322 |
|
|---|
| 1323 | /* Execute a `define' directive.
|
|---|
| 1324 | The first line has already been read, and NAME is the name of
|
|---|
| 1325 | the variable to be defined. The following lines remain to be read. */
|
|---|
| 1326 |
|
|---|
| 1327 | static void
|
|---|
| 1328 | do_define (char *name, unsigned int namelen,
|
|---|
| 1329 | enum variable_origin origin, struct ebuffer *ebuf)
|
|---|
| 1330 | {
|
|---|
| 1331 | struct floc defstart;
|
|---|
| 1332 | long nlines = 0;
|
|---|
| 1333 | int nlevels = 1;
|
|---|
| 1334 | unsigned int length = 100;
|
|---|
| 1335 | char *definition = xmalloc (length);
|
|---|
| 1336 | unsigned int idx = 0;
|
|---|
| 1337 | char *p;
|
|---|
| 1338 |
|
|---|
| 1339 | /* Expand the variable name. */
|
|---|
| 1340 | char *var = alloca (namelen + 1);
|
|---|
| 1341 | memcpy (var, name, namelen);
|
|---|
| 1342 | var[namelen] = '\0';
|
|---|
| 1343 | var = variable_expand (var);
|
|---|
| 1344 |
|
|---|
| 1345 | defstart = ebuf->floc;
|
|---|
| 1346 |
|
|---|
| 1347 | while (1)
|
|---|
| 1348 | {
|
|---|
| 1349 | unsigned int len;
|
|---|
| 1350 | char *line;
|
|---|
| 1351 |
|
|---|
| 1352 | nlines = readline (ebuf);
|
|---|
| 1353 | ebuf->floc.lineno += nlines;
|
|---|
| 1354 |
|
|---|
| 1355 | /* If there is nothing left to eval, we're done. */
|
|---|
| 1356 | if (nlines < 0)
|
|---|
| 1357 | break;
|
|---|
| 1358 |
|
|---|
| 1359 | line = ebuf->buffer;
|
|---|
| 1360 |
|
|---|
| 1361 | collapse_continuations (line);
|
|---|
| 1362 |
|
|---|
| 1363 | /* If the line doesn't begin with a tab, test to see if it introduces
|
|---|
| 1364 | another define, or ends one. */
|
|---|
| 1365 |
|
|---|
| 1366 | /* Stop if we find an 'endef' */
|
|---|
| 1367 | if (line[0] != cmd_prefix)
|
|---|
| 1368 | {
|
|---|
| 1369 | p = next_token (line);
|
|---|
| 1370 | len = strlen (p);
|
|---|
| 1371 |
|
|---|
| 1372 | /* If this is another 'define', increment the level count. */
|
|---|
| 1373 | if ((len == 6 || (len > 6 && isblank ((unsigned char)p[6])))
|
|---|
| 1374 | && strneq (p, "define", 6))
|
|---|
| 1375 | ++nlevels;
|
|---|
| 1376 |
|
|---|
| 1377 | /* If this is an 'endef', decrement the count. If it's now 0,
|
|---|
| 1378 | we've found the last one. */
|
|---|
| 1379 | else if ((len == 5 || (len > 5 && isblank ((unsigned char)p[5])))
|
|---|
| 1380 | && strneq (p, "endef", 5))
|
|---|
| 1381 | {
|
|---|
| 1382 | p += 5;
|
|---|
| 1383 | remove_comments (p);
|
|---|
| 1384 | if (*next_token (p) != '\0')
|
|---|
| 1385 | error (&ebuf->floc,
|
|---|
| 1386 | _("Extraneous text after `endef' directive"));
|
|---|
| 1387 |
|
|---|
| 1388 | if (--nlevels == 0)
|
|---|
| 1389 | {
|
|---|
| 1390 | /* Define the variable. */
|
|---|
| 1391 | if (idx == 0)
|
|---|
| 1392 | definition[0] = '\0';
|
|---|
| 1393 | else
|
|---|
| 1394 | definition[idx - 1] = '\0';
|
|---|
| 1395 |
|
|---|
| 1396 | /* Always define these variables in the global set. */
|
|---|
| 1397 | define_variable_global (var, strlen (var), definition,
|
|---|
| 1398 | origin, 1, &defstart);
|
|---|
| 1399 | free (definition);
|
|---|
| 1400 | return;
|
|---|
| 1401 | }
|
|---|
| 1402 | }
|
|---|
| 1403 | }
|
|---|
| 1404 |
|
|---|
| 1405 | /* Otherwise add this line to the variable definition. */
|
|---|
| 1406 | len = strlen (line);
|
|---|
| 1407 | if (idx + len + 1 > length)
|
|---|
| 1408 | {
|
|---|
| 1409 | length = (idx + len) * 2;
|
|---|
| 1410 | definition = xrealloc (definition, length + 1);
|
|---|
| 1411 | }
|
|---|
| 1412 |
|
|---|
| 1413 | memcpy (&definition[idx], line, len);
|
|---|
| 1414 | idx += len;
|
|---|
| 1415 | /* Separate lines with a newline. */
|
|---|
| 1416 | definition[idx++] = '\n';
|
|---|
| 1417 | }
|
|---|
| 1418 |
|
|---|
| 1419 | /* No `endef'!! */
|
|---|
| 1420 | fatal (&defstart, _("missing `endef', unterminated `define'"));
|
|---|
| 1421 |
|
|---|
| 1422 | /* NOTREACHED */
|
|---|
| 1423 | return;
|
|---|
| 1424 | }
|
|---|
| 1425 | |
|---|
| 1426 |
|
|---|
| 1427 | /* Interpret conditional commands "ifdef", "ifndef", "ifeq",
|
|---|
| 1428 | "ifneq", "else" and "endif".
|
|---|
| 1429 | LINE is the input line, with the command as its first word.
|
|---|
| 1430 |
|
|---|
| 1431 | FILENAME and LINENO are the filename and line number in the
|
|---|
| 1432 | current makefile. They are used for error messages.
|
|---|
| 1433 |
|
|---|
| 1434 | Value is -2 if the line is not a conditional at all,
|
|---|
| 1435 | -1 if the line is an invalid conditional,
|
|---|
| 1436 | 0 if following text should be interpreted,
|
|---|
| 1437 | 1 if following text should be ignored. */
|
|---|
| 1438 |
|
|---|
| 1439 | static int
|
|---|
| 1440 | conditional_line (char *line, int len, const struct floc *flocp)
|
|---|
| 1441 | {
|
|---|
| 1442 | char *cmdname;
|
|---|
| 1443 | enum { c_ifdef, c_ifndef, c_ifeq, c_ifneq, c_else, c_endif } cmdtype;
|
|---|
| 1444 | unsigned int i;
|
|---|
| 1445 | unsigned int o;
|
|---|
| 1446 |
|
|---|
| 1447 | /* Compare a word, both length and contents. */
|
|---|
| 1448 | #define word1eq(s) (len == sizeof(s)-1 && strneq (s, line, sizeof(s)-1))
|
|---|
| 1449 | #define chkword(s, t) if (word1eq (s)) { cmdtype = (t); cmdname = (s); }
|
|---|
| 1450 |
|
|---|
| 1451 | /* Make sure this line is a conditional. */
|
|---|
| 1452 | chkword ("ifdef", c_ifdef)
|
|---|
| 1453 | else chkword ("ifndef", c_ifndef)
|
|---|
| 1454 | else chkword ("ifeq", c_ifeq)
|
|---|
| 1455 | else chkword ("ifneq", c_ifneq)
|
|---|
| 1456 | else chkword ("else", c_else)
|
|---|
| 1457 | else chkword ("endif", c_endif)
|
|---|
| 1458 | else
|
|---|
| 1459 | return -2;
|
|---|
| 1460 |
|
|---|
| 1461 | /* Found one: skip past it and any whitespace after it. */
|
|---|
| 1462 | line = next_token (line + len);
|
|---|
| 1463 |
|
|---|
| 1464 | #define EXTRANEOUS() error (flocp, _("Extraneous text after `%s' directive"), cmdname)
|
|---|
| 1465 |
|
|---|
| 1466 | /* An 'endif' cannot contain extra text, and reduces the if-depth by 1 */
|
|---|
| 1467 | if (cmdtype == c_endif)
|
|---|
| 1468 | {
|
|---|
| 1469 | if (*line != '\0')
|
|---|
| 1470 | EXTRANEOUS ();
|
|---|
| 1471 |
|
|---|
| 1472 | if (!conditionals->if_cmds)
|
|---|
| 1473 | fatal (flocp, _("extraneous `%s'"), cmdname);
|
|---|
| 1474 |
|
|---|
| 1475 | --conditionals->if_cmds;
|
|---|
| 1476 |
|
|---|
| 1477 | goto DONE;
|
|---|
| 1478 | }
|
|---|
| 1479 |
|
|---|
| 1480 | /* An 'else' statement can either be simple, or it can have another
|
|---|
| 1481 | conditional after it. */
|
|---|
| 1482 | if (cmdtype == c_else)
|
|---|
| 1483 | {
|
|---|
| 1484 | const char *p;
|
|---|
| 1485 |
|
|---|
| 1486 | if (!conditionals->if_cmds)
|
|---|
| 1487 | fatal (flocp, _("extraneous `%s'"), cmdname);
|
|---|
| 1488 |
|
|---|
| 1489 | o = conditionals->if_cmds - 1;
|
|---|
| 1490 |
|
|---|
| 1491 | if (conditionals->seen_else[o])
|
|---|
| 1492 | fatal (flocp, _("only one `else' per conditional"));
|
|---|
| 1493 |
|
|---|
| 1494 | /* Change the state of ignorance. */
|
|---|
| 1495 | switch (conditionals->ignoring[o])
|
|---|
| 1496 | {
|
|---|
| 1497 | case 0:
|
|---|
| 1498 | /* We've just been interpreting. Never do it again. */
|
|---|
| 1499 | conditionals->ignoring[o] = 2;
|
|---|
| 1500 | break;
|
|---|
| 1501 | case 1:
|
|---|
| 1502 | /* We've never interpreted yet. Maybe this time! */
|
|---|
| 1503 | conditionals->ignoring[o] = 0;
|
|---|
| 1504 | break;
|
|---|
| 1505 | }
|
|---|
| 1506 |
|
|---|
| 1507 | /* It's a simple 'else'. */
|
|---|
| 1508 | if (*line == '\0')
|
|---|
| 1509 | {
|
|---|
| 1510 | conditionals->seen_else[o] = 1;
|
|---|
| 1511 | goto DONE;
|
|---|
| 1512 | }
|
|---|
| 1513 |
|
|---|
| 1514 | /* The 'else' has extra text. That text must be another conditional
|
|---|
| 1515 | and cannot be an 'else' or 'endif'. */
|
|---|
| 1516 |
|
|---|
| 1517 | /* Find the length of the next word. */
|
|---|
| 1518 | for (p = line+1; *p != '\0' && !isspace ((unsigned char)*p); ++p)
|
|---|
| 1519 | ;
|
|---|
| 1520 | len = p - line;
|
|---|
| 1521 |
|
|---|
| 1522 | /* If it's 'else' or 'endif' or an illegal conditional, fail. */
|
|---|
| 1523 | if (word1eq("else") || word1eq("endif")
|
|---|
| 1524 | || conditional_line (line, len, flocp) < 0)
|
|---|
| 1525 | EXTRANEOUS ();
|
|---|
| 1526 | else
|
|---|
| 1527 | {
|
|---|
| 1528 | /* conditional_line() created a new level of conditional.
|
|---|
| 1529 | Raise it back to this level. */
|
|---|
| 1530 | if (conditionals->ignoring[o] < 2)
|
|---|
| 1531 | conditionals->ignoring[o] = conditionals->ignoring[o+1];
|
|---|
| 1532 | --conditionals->if_cmds;
|
|---|
| 1533 | }
|
|---|
| 1534 |
|
|---|
| 1535 | goto DONE;
|
|---|
| 1536 | }
|
|---|
| 1537 |
|
|---|
| 1538 | if (conditionals->allocated == 0)
|
|---|
| 1539 | {
|
|---|
| 1540 | conditionals->allocated = 5;
|
|---|
| 1541 | conditionals->ignoring = xmalloc (conditionals->allocated);
|
|---|
| 1542 | conditionals->seen_else = xmalloc (conditionals->allocated);
|
|---|
| 1543 | }
|
|---|
| 1544 |
|
|---|
| 1545 | o = conditionals->if_cmds++;
|
|---|
| 1546 | if (conditionals->if_cmds > conditionals->allocated)
|
|---|
| 1547 | {
|
|---|
| 1548 | conditionals->allocated += 5;
|
|---|
| 1549 | conditionals->ignoring = xrealloc (conditionals->ignoring,
|
|---|
| 1550 | conditionals->allocated);
|
|---|
| 1551 | conditionals->seen_else = xrealloc (conditionals->seen_else,
|
|---|
| 1552 | conditionals->allocated);
|
|---|
| 1553 | }
|
|---|
| 1554 |
|
|---|
| 1555 | /* Record that we have seen an `if...' but no `else' so far. */
|
|---|
| 1556 | conditionals->seen_else[o] = 0;
|
|---|
| 1557 |
|
|---|
| 1558 | /* Search through the stack to see if we're already ignoring. */
|
|---|
| 1559 | for (i = 0; i < o; ++i)
|
|---|
| 1560 | if (conditionals->ignoring[i])
|
|---|
| 1561 | {
|
|---|
| 1562 | /* We are already ignoring, so just push a level to match the next
|
|---|
| 1563 | "else" or "endif", and keep ignoring. We don't want to expand
|
|---|
| 1564 | variables in the condition. */
|
|---|
| 1565 | conditionals->ignoring[o] = 1;
|
|---|
| 1566 | return 1;
|
|---|
| 1567 | }
|
|---|
| 1568 |
|
|---|
| 1569 | if (cmdtype == c_ifdef || cmdtype == c_ifndef)
|
|---|
| 1570 | {
|
|---|
| 1571 | char *var;
|
|---|
| 1572 | struct variable *v;
|
|---|
| 1573 | char *p;
|
|---|
| 1574 |
|
|---|
| 1575 | /* Expand the thing we're looking up, so we can use indirect and
|
|---|
| 1576 | constructed variable names. */
|
|---|
| 1577 | var = allocated_variable_expand (line);
|
|---|
| 1578 |
|
|---|
| 1579 | /* Make sure there's only one variable name to test. */
|
|---|
| 1580 | p = end_of_token (var);
|
|---|
| 1581 | i = p - var;
|
|---|
| 1582 | p = next_token (p);
|
|---|
| 1583 | if (*p != '\0')
|
|---|
| 1584 | return -1;
|
|---|
| 1585 |
|
|---|
| 1586 | var[i] = '\0';
|
|---|
| 1587 | v = lookup_variable (var, i);
|
|---|
| 1588 |
|
|---|
| 1589 | conditionals->ignoring[o] =
|
|---|
| 1590 | ((v != 0 && *v->value != '\0') == (cmdtype == c_ifndef));
|
|---|
| 1591 |
|
|---|
| 1592 | free (var);
|
|---|
| 1593 | }
|
|---|
| 1594 | else
|
|---|
| 1595 | {
|
|---|
| 1596 | /* "ifeq" or "ifneq". */
|
|---|
| 1597 | char *s1, *s2;
|
|---|
| 1598 | unsigned int l;
|
|---|
| 1599 | char termin = *line == '(' ? ',' : *line;
|
|---|
| 1600 |
|
|---|
| 1601 | if (termin != ',' && termin != '"' && termin != '\'')
|
|---|
| 1602 | return -1;
|
|---|
| 1603 |
|
|---|
| 1604 | s1 = ++line;
|
|---|
| 1605 | /* Find the end of the first string. */
|
|---|
| 1606 | if (termin == ',')
|
|---|
| 1607 | {
|
|---|
| 1608 | int count = 0;
|
|---|
| 1609 | for (; *line != '\0'; ++line)
|
|---|
| 1610 | if (*line == '(')
|
|---|
| 1611 | ++count;
|
|---|
| 1612 | else if (*line == ')')
|
|---|
| 1613 | --count;
|
|---|
| 1614 | else if (*line == ',' && count <= 0)
|
|---|
| 1615 | break;
|
|---|
| 1616 | }
|
|---|
| 1617 | else
|
|---|
| 1618 | while (*line != '\0' && *line != termin)
|
|---|
| 1619 | ++line;
|
|---|
| 1620 |
|
|---|
| 1621 | if (*line == '\0')
|
|---|
| 1622 | return -1;
|
|---|
| 1623 |
|
|---|
| 1624 | if (termin == ',')
|
|---|
| 1625 | {
|
|---|
| 1626 | /* Strip blanks after the first string. */
|
|---|
| 1627 | char *p = line++;
|
|---|
| 1628 | while (isblank ((unsigned char)p[-1]))
|
|---|
| 1629 | --p;
|
|---|
| 1630 | *p = '\0';
|
|---|
| 1631 | }
|
|---|
| 1632 | else
|
|---|
| 1633 | *line++ = '\0';
|
|---|
| 1634 |
|
|---|
| 1635 | s2 = variable_expand (s1);
|
|---|
| 1636 | /* We must allocate a new copy of the expanded string because
|
|---|
| 1637 | variable_expand re-uses the same buffer. */
|
|---|
| 1638 | l = strlen (s2);
|
|---|
| 1639 | s1 = alloca (l + 1);
|
|---|
| 1640 | memcpy (s1, s2, l + 1);
|
|---|
| 1641 |
|
|---|
| 1642 | if (termin != ',')
|
|---|
| 1643 | /* Find the start of the second string. */
|
|---|
| 1644 | line = next_token (line);
|
|---|
| 1645 |
|
|---|
| 1646 | termin = termin == ',' ? ')' : *line;
|
|---|
| 1647 | if (termin != ')' && termin != '"' && termin != '\'')
|
|---|
| 1648 | return -1;
|
|---|
| 1649 |
|
|---|
| 1650 | /* Find the end of the second string. */
|
|---|
| 1651 | if (termin == ')')
|
|---|
| 1652 | {
|
|---|
| 1653 | int count = 0;
|
|---|
| 1654 | s2 = next_token (line);
|
|---|
| 1655 | for (line = s2; *line != '\0'; ++line)
|
|---|
| 1656 | {
|
|---|
| 1657 | if (*line == '(')
|
|---|
| 1658 | ++count;
|
|---|
| 1659 | else if (*line == ')')
|
|---|
| 1660 | {
|
|---|
| 1661 | if (count <= 0)
|
|---|
| 1662 | break;
|
|---|
| 1663 | else
|
|---|
| 1664 | --count;
|
|---|
| 1665 | }
|
|---|
| 1666 | }
|
|---|
| 1667 | }
|
|---|
| 1668 | else
|
|---|
| 1669 | {
|
|---|
| 1670 | ++line;
|
|---|
| 1671 | s2 = line;
|
|---|
| 1672 | while (*line != '\0' && *line != termin)
|
|---|
| 1673 | ++line;
|
|---|
| 1674 | }
|
|---|
| 1675 |
|
|---|
| 1676 | if (*line == '\0')
|
|---|
| 1677 | return -1;
|
|---|
| 1678 |
|
|---|
| 1679 | *line = '\0';
|
|---|
| 1680 | line = next_token (++line);
|
|---|
| 1681 | if (*line != '\0')
|
|---|
| 1682 | EXTRANEOUS ();
|
|---|
| 1683 |
|
|---|
| 1684 | s2 = variable_expand (s2);
|
|---|
| 1685 | conditionals->ignoring[o] = (streq (s1, s2) == (cmdtype == c_ifneq));
|
|---|
| 1686 | }
|
|---|
| 1687 |
|
|---|
| 1688 | DONE:
|
|---|
| 1689 | /* Search through the stack to see if we're ignoring. */
|
|---|
| 1690 | for (i = 0; i < conditionals->if_cmds; ++i)
|
|---|
| 1691 | if (conditionals->ignoring[i])
|
|---|
| 1692 | return 1;
|
|---|
| 1693 | return 0;
|
|---|
| 1694 | }
|
|---|
| 1695 | |
|---|
| 1696 |
|
|---|
| 1697 | /* Remove duplicate dependencies in CHAIN. */
|
|---|
| 1698 |
|
|---|
| 1699 | static unsigned long
|
|---|
| 1700 | dep_hash_1 (const void *key)
|
|---|
| 1701 | {
|
|---|
| 1702 | return_STRING_HASH_1 (dep_name ((struct dep const *) key));
|
|---|
| 1703 | }
|
|---|
| 1704 |
|
|---|
| 1705 | static unsigned long
|
|---|
| 1706 | dep_hash_2 (const void *key)
|
|---|
| 1707 | {
|
|---|
| 1708 | return_STRING_HASH_2 (dep_name ((struct dep const *) key));
|
|---|
| 1709 | }
|
|---|
| 1710 |
|
|---|
| 1711 | static int
|
|---|
| 1712 | dep_hash_cmp (const void *x, const void *y)
|
|---|
| 1713 | {
|
|---|
| 1714 | struct dep *dx = (struct dep *) x;
|
|---|
| 1715 | struct dep *dy = (struct dep *) y;
|
|---|
| 1716 | int cmp = strcmp (dep_name (dx), dep_name (dy));
|
|---|
| 1717 |
|
|---|
| 1718 | /* If the names are the same but ignore_mtimes are not equal, one of these
|
|---|
| 1719 | is an order-only prerequisite and one isn't. That means that we should
|
|---|
| 1720 | remove the one that isn't and keep the one that is. */
|
|---|
| 1721 |
|
|---|
| 1722 | if (!cmp && dx->ignore_mtime != dy->ignore_mtime)
|
|---|
| 1723 | dx->ignore_mtime = dy->ignore_mtime = 0;
|
|---|
| 1724 |
|
|---|
| 1725 | return cmp;
|
|---|
| 1726 | }
|
|---|
| 1727 |
|
|---|
| 1728 |
|
|---|
| 1729 | void
|
|---|
| 1730 | uniquize_deps (struct dep *chain)
|
|---|
| 1731 | {
|
|---|
| 1732 | struct hash_table deps;
|
|---|
| 1733 | register struct dep **depp;
|
|---|
| 1734 |
|
|---|
| 1735 | hash_init (&deps, 500, dep_hash_1, dep_hash_2, dep_hash_cmp);
|
|---|
| 1736 |
|
|---|
| 1737 | /* Make sure that no dependencies are repeated. This does not
|
|---|
| 1738 | really matter for the purpose of updating targets, but it
|
|---|
| 1739 | might make some names be listed twice for $^ and $?. */
|
|---|
| 1740 |
|
|---|
| 1741 | depp = &chain;
|
|---|
| 1742 | while (*depp)
|
|---|
| 1743 | {
|
|---|
| 1744 | struct dep *dep = *depp;
|
|---|
| 1745 | struct dep **dep_slot = (struct dep **) hash_find_slot (&deps, dep);
|
|---|
| 1746 | if (HASH_VACANT (*dep_slot))
|
|---|
| 1747 | {
|
|---|
| 1748 | hash_insert_at (&deps, dep, dep_slot);
|
|---|
| 1749 | depp = &dep->next;
|
|---|
| 1750 | }
|
|---|
| 1751 | else
|
|---|
| 1752 | {
|
|---|
| 1753 | /* Don't bother freeing duplicates.
|
|---|
| 1754 | It's dangerous and little benefit accrues. */
|
|---|
| 1755 | *depp = dep->next;
|
|---|
| 1756 | }
|
|---|
| 1757 | }
|
|---|
| 1758 |
|
|---|
| 1759 | hash_free (&deps, 0);
|
|---|
| 1760 | }
|
|---|
| 1761 | |
|---|
| 1762 |
|
|---|
| 1763 | /* Record target-specific variable values for files FILENAMES.
|
|---|
| 1764 | TWO_COLON is nonzero if a double colon was used.
|
|---|
| 1765 |
|
|---|
| 1766 | The links of FILENAMES are freed, and so are any names in it
|
|---|
| 1767 | that are not incorporated into other data structures.
|
|---|
| 1768 |
|
|---|
| 1769 | If the target is a pattern, add the variable to the pattern-specific
|
|---|
| 1770 | variable value list. */
|
|---|
| 1771 |
|
|---|
| 1772 | static void
|
|---|
| 1773 | record_target_var (struct nameseq *filenames, char *defn,
|
|---|
| 1774 | enum variable_origin origin, int exported,
|
|---|
| 1775 | const struct floc *flocp)
|
|---|
| 1776 | {
|
|---|
| 1777 | struct nameseq *nextf;
|
|---|
| 1778 | struct variable_set_list *global;
|
|---|
| 1779 |
|
|---|
| 1780 | global = current_variable_set_list;
|
|---|
| 1781 |
|
|---|
| 1782 | /* If the variable is an append version, store that but treat it as a
|
|---|
| 1783 | normal recursive variable. */
|
|---|
| 1784 |
|
|---|
| 1785 | for (; filenames != 0; filenames = nextf)
|
|---|
| 1786 | {
|
|---|
| 1787 | struct variable *v;
|
|---|
| 1788 | const char *name = filenames->name;
|
|---|
| 1789 | const char *fname;
|
|---|
| 1790 | const char *percent;
|
|---|
| 1791 | struct pattern_var *p;
|
|---|
| 1792 |
|
|---|
| 1793 | nextf = filenames->next;
|
|---|
| 1794 | free (filenames);
|
|---|
| 1795 |
|
|---|
| 1796 | /* If it's a pattern target, then add it to the pattern-specific
|
|---|
| 1797 | variable list. */
|
|---|
| 1798 | percent = find_percent_cached (&name);
|
|---|
| 1799 | if (percent)
|
|---|
| 1800 | {
|
|---|
| 1801 | /* Get a reference for this pattern-specific variable struct. */
|
|---|
| 1802 | p = create_pattern_var (name, percent);
|
|---|
| 1803 | p->variable.fileinfo = *flocp;
|
|---|
| 1804 | /* I don't think this can fail since we already determined it was a
|
|---|
| 1805 | variable definition. */
|
|---|
| 1806 | v = parse_variable_definition (&p->variable, defn);
|
|---|
| 1807 | assert (v != 0);
|
|---|
| 1808 |
|
|---|
| 1809 | if (v->flavor == f_simple)
|
|---|
| 1810 | v->value = allocated_variable_expand (v->value);
|
|---|
| 1811 | else
|
|---|
| 1812 | v->value = xstrdup (v->value);
|
|---|
| 1813 |
|
|---|
| 1814 | fname = p->target;
|
|---|
| 1815 | }
|
|---|
| 1816 | else
|
|---|
| 1817 | {
|
|---|
| 1818 | struct file *f;
|
|---|
| 1819 |
|
|---|
| 1820 | /* Get a file reference for this file, and initialize it.
|
|---|
| 1821 | We don't want to just call enter_file() because that allocates a
|
|---|
| 1822 | new entry if the file is a double-colon, which we don't want in
|
|---|
| 1823 | this situation. */
|
|---|
| 1824 | f = lookup_file (name);
|
|---|
| 1825 | if (!f)
|
|---|
| 1826 | f = enter_file (strcache_add (name));
|
|---|
| 1827 | else if (f->double_colon)
|
|---|
| 1828 | f = f->double_colon;
|
|---|
| 1829 |
|
|---|
| 1830 | initialize_file_variables (f, 1);
|
|---|
| 1831 | fname = f->name;
|
|---|
| 1832 |
|
|---|
| 1833 | current_variable_set_list = f->variables;
|
|---|
| 1834 | v = try_variable_definition (flocp, defn, origin, 1);
|
|---|
| 1835 | if (!v)
|
|---|
| 1836 | error (flocp, _("Malformed target-specific variable definition"));
|
|---|
| 1837 | current_variable_set_list = global;
|
|---|
| 1838 | }
|
|---|
| 1839 |
|
|---|
| 1840 | /* Set up the variable to be *-specific. */
|
|---|
| 1841 | v->origin = origin;
|
|---|
| 1842 | v->per_target = 1;
|
|---|
| 1843 | v->export = exported ? v_export : v_default;
|
|---|
| 1844 |
|
|---|
| 1845 | /* If it's not an override, check to see if there was a command-line
|
|---|
| 1846 | setting. If so, reset the value. */
|
|---|
| 1847 | if (origin != o_override)
|
|---|
| 1848 | {
|
|---|
| 1849 | struct variable *gv;
|
|---|
| 1850 | int len = strlen(v->name);
|
|---|
| 1851 |
|
|---|
| 1852 | gv = lookup_variable (v->name, len);
|
|---|
| 1853 | if (gv && (gv->origin == o_env_override || gv->origin == o_command))
|
|---|
| 1854 | {
|
|---|
| 1855 | if (v->value != 0)
|
|---|
| 1856 | free (v->value);
|
|---|
| 1857 | v->value = xstrdup (gv->value);
|
|---|
| 1858 | v->origin = gv->origin;
|
|---|
| 1859 | v->recursive = gv->recursive;
|
|---|
| 1860 | v->append = 0;
|
|---|
| 1861 | }
|
|---|
| 1862 | }
|
|---|
| 1863 | }
|
|---|
| 1864 | }
|
|---|
| 1865 | |
|---|
| 1866 |
|
|---|
| 1867 | /* Record a description line for files FILENAMES,
|
|---|
| 1868 | with dependencies DEPS, commands to execute described
|
|---|
| 1869 | by COMMANDS and COMMANDS_IDX, coming from FILENAME:COMMANDS_STARTED.
|
|---|
| 1870 | TWO_COLON is nonzero if a double colon was used.
|
|---|
| 1871 | If not nil, PATTERN is the `%' pattern to make this
|
|---|
| 1872 | a static pattern rule, and PATTERN_PERCENT is a pointer
|
|---|
| 1873 | to the `%' within it.
|
|---|
| 1874 |
|
|---|
| 1875 | The links of FILENAMES are freed, and so are any names in it
|
|---|
| 1876 | that are not incorporated into other data structures. */
|
|---|
| 1877 |
|
|---|
| 1878 | static void
|
|---|
| 1879 | record_files (struct nameseq *filenames, const char *pattern,
|
|---|
| 1880 | const char *pattern_percent, struct dep *deps,
|
|---|
| 1881 | unsigned int cmds_started, char *commands,
|
|---|
| 1882 | unsigned int commands_idx, int two_colon,
|
|---|
| 1883 | const struct floc *flocp)
|
|---|
| 1884 | {
|
|---|
| 1885 | struct nameseq *nextf;
|
|---|
| 1886 | int implicit = 0;
|
|---|
| 1887 | unsigned int max_targets = 0, target_idx = 0;
|
|---|
| 1888 | const char **targets = 0, **target_percents = 0;
|
|---|
| 1889 | struct commands *cmds;
|
|---|
| 1890 |
|
|---|
| 1891 | /* If we've already snapped deps, that means we're in an eval being
|
|---|
| 1892 | resolved after the makefiles have been read in. We can't add more rules
|
|---|
| 1893 | at this time, since they won't get snapped and we'll get core dumps.
|
|---|
| 1894 | See Savannah bug # 12124. */
|
|---|
| 1895 | if (snapped_deps)
|
|---|
| 1896 | fatal (flocp, _("prerequisites cannot be defined in recipes"));
|
|---|
| 1897 |
|
|---|
| 1898 | if (commands_idx > 0)
|
|---|
| 1899 | {
|
|---|
| 1900 | cmds = xmalloc (sizeof (struct commands));
|
|---|
| 1901 | cmds->fileinfo.filenm = flocp->filenm;
|
|---|
| 1902 | cmds->fileinfo.lineno = cmds_started;
|
|---|
| 1903 | cmds->commands = savestring (commands, commands_idx);
|
|---|
| 1904 | cmds->command_lines = 0;
|
|---|
| 1905 | }
|
|---|
| 1906 | else
|
|---|
| 1907 | cmds = 0;
|
|---|
| 1908 |
|
|---|
| 1909 | for (; filenames != 0; filenames = nextf)
|
|---|
| 1910 | {
|
|---|
| 1911 | const char *name = filenames->name;
|
|---|
| 1912 | struct file *f;
|
|---|
| 1913 | struct dep *this = 0;
|
|---|
| 1914 | const char *implicit_percent;
|
|---|
| 1915 |
|
|---|
| 1916 | nextf = filenames->next;
|
|---|
| 1917 | free (filenames);
|
|---|
| 1918 |
|
|---|
| 1919 | /* Check for special targets. Do it here instead of, say, snap_deps()
|
|---|
| 1920 | so that we can immediately use the value. */
|
|---|
| 1921 |
|
|---|
| 1922 | if (streq (name, ".POSIX"))
|
|---|
| 1923 | posix_pedantic = 1;
|
|---|
| 1924 | else if (streq (name, ".SECONDEXPANSION"))
|
|---|
| 1925 | second_expansion = 1;
|
|---|
| 1926 |
|
|---|
| 1927 | implicit_percent = find_percent_cached (&name);
|
|---|
| 1928 | implicit |= implicit_percent != 0;
|
|---|
| 1929 |
|
|---|
| 1930 | if (implicit)
|
|---|
| 1931 | {
|
|---|
| 1932 | if (pattern != 0)
|
|---|
| 1933 | fatal (flocp, _("mixed implicit and static pattern rules"));
|
|---|
| 1934 |
|
|---|
| 1935 | if (implicit_percent == 0)
|
|---|
| 1936 | fatal (flocp, _("mixed implicit and normal rules"));
|
|---|
| 1937 |
|
|---|
| 1938 | if (targets == 0)
|
|---|
| 1939 | {
|
|---|
| 1940 | max_targets = 5;
|
|---|
| 1941 | targets = xmalloc (5 * sizeof (char *));
|
|---|
| 1942 | target_percents = xmalloc (5 * sizeof (char *));
|
|---|
| 1943 | target_idx = 0;
|
|---|
| 1944 | }
|
|---|
| 1945 | else if (target_idx == max_targets - 1)
|
|---|
| 1946 | {
|
|---|
| 1947 | max_targets += 5;
|
|---|
| 1948 | targets = xrealloc (targets, max_targets * sizeof (char *));
|
|---|
| 1949 | target_percents = xrealloc (target_percents,
|
|---|
| 1950 | max_targets * sizeof (char *));
|
|---|
| 1951 | }
|
|---|
| 1952 | targets[target_idx] = name;
|
|---|
| 1953 | target_percents[target_idx] = implicit_percent;
|
|---|
| 1954 | ++target_idx;
|
|---|
| 1955 | continue;
|
|---|
| 1956 | }
|
|---|
| 1957 |
|
|---|
| 1958 | /* If this is a static pattern rule:
|
|---|
| 1959 | `targets: target%pattern: dep%pattern; cmds',
|
|---|
| 1960 | make sure the pattern matches this target name. */
|
|---|
| 1961 | if (pattern && !pattern_matches (pattern, pattern_percent, name))
|
|---|
| 1962 | error (flocp, _("target `%s' doesn't match the target pattern"), name);
|
|---|
| 1963 | else if (deps)
|
|---|
| 1964 | {
|
|---|
| 1965 | /* If there are multiple filenames, copy the chain DEPS for all but
|
|---|
| 1966 | the last one. It is not safe for the same deps to go in more
|
|---|
| 1967 | than one place in the database. */
|
|---|
| 1968 | this = nextf != 0 ? copy_dep_chain (deps) : deps;
|
|---|
| 1969 | this->need_2nd_expansion = (second_expansion
|
|---|
| 1970 | && strchr (this->name, '$'));
|
|---|
| 1971 | }
|
|---|
| 1972 |
|
|---|
| 1973 | if (!two_colon)
|
|---|
| 1974 | {
|
|---|
| 1975 | /* Single-colon. Combine these dependencies
|
|---|
| 1976 | with others in file's existing record, if any. */
|
|---|
| 1977 | f = enter_file (strcache_add (name));
|
|---|
| 1978 |
|
|---|
| 1979 | if (f->double_colon)
|
|---|
| 1980 | fatal (flocp,
|
|---|
| 1981 | _("target file `%s' has both : and :: entries"), f->name);
|
|---|
| 1982 |
|
|---|
| 1983 | /* If CMDS == F->CMDS, this target was listed in this rule
|
|---|
| 1984 | more than once. Just give a warning since this is harmless. */
|
|---|
| 1985 | if (cmds != 0 && cmds == f->cmds)
|
|---|
| 1986 | error (flocp,
|
|---|
| 1987 | _("target `%s' given more than once in the same rule."),
|
|---|
| 1988 | f->name);
|
|---|
| 1989 |
|
|---|
| 1990 | /* Check for two single-colon entries both with commands.
|
|---|
| 1991 | Check is_target so that we don't lose on files such as .c.o
|
|---|
| 1992 | whose commands were preinitialized. */
|
|---|
| 1993 | else if (cmds != 0 && f->cmds != 0 && f->is_target)
|
|---|
| 1994 | {
|
|---|
| 1995 | error (&cmds->fileinfo,
|
|---|
| 1996 | _("warning: overriding recipe for target `%s'"),
|
|---|
| 1997 | f->name);
|
|---|
| 1998 | error (&f->cmds->fileinfo,
|
|---|
| 1999 | _("warning: ignoring old recipe for target `%s'"),
|
|---|
| 2000 | f->name);
|
|---|
| 2001 | }
|
|---|
| 2002 |
|
|---|
| 2003 | f->is_target = 1;
|
|---|
| 2004 |
|
|---|
| 2005 | /* Defining .DEFAULT with no deps or cmds clears it. */
|
|---|
| 2006 | if (f == default_file && this == 0 && cmds == 0)
|
|---|
| 2007 | f->cmds = 0;
|
|---|
| 2008 | if (cmds != 0)
|
|---|
| 2009 | f->cmds = cmds;
|
|---|
| 2010 |
|
|---|
| 2011 | /* Defining .SUFFIXES with no dependencies clears out the list of
|
|---|
| 2012 | suffixes. */
|
|---|
| 2013 | if (f == suffix_file && this == 0)
|
|---|
| 2014 | {
|
|---|
| 2015 | free_dep_chain (f->deps);
|
|---|
| 2016 | f->deps = 0;
|
|---|
| 2017 | }
|
|---|
| 2018 | else if (this != 0)
|
|---|
| 2019 | {
|
|---|
| 2020 | /* Add the file's old deps and the new ones in THIS together. */
|
|---|
| 2021 |
|
|---|
| 2022 | if (f->deps != 0)
|
|---|
| 2023 | {
|
|---|
| 2024 | struct dep **d_ptr = &f->deps;
|
|---|
| 2025 |
|
|---|
| 2026 | while ((*d_ptr)->next != 0)
|
|---|
| 2027 | d_ptr = &(*d_ptr)->next;
|
|---|
| 2028 |
|
|---|
| 2029 | if (cmds != 0)
|
|---|
| 2030 | /* This is the rule with commands, so put its deps
|
|---|
| 2031 | last. The rationale behind this is that $< expands to
|
|---|
| 2032 | the first dep in the chain, and commands use $<
|
|---|
| 2033 | expecting to get the dep that rule specifies. However
|
|---|
| 2034 | the second expansion algorithm reverses the order thus
|
|---|
| 2035 | we need to make it last here. */
|
|---|
| 2036 | (*d_ptr)->next = this;
|
|---|
| 2037 | else
|
|---|
| 2038 | {
|
|---|
| 2039 | /* This is the rule without commands. Put its
|
|---|
| 2040 | dependencies at the end but before dependencies from
|
|---|
| 2041 | the rule with commands (if any). This way everything
|
|---|
| 2042 | appears in makefile order. */
|
|---|
| 2043 |
|
|---|
| 2044 | if (f->cmds != 0)
|
|---|
| 2045 | {
|
|---|
| 2046 | this->next = *d_ptr;
|
|---|
| 2047 | *d_ptr = this;
|
|---|
| 2048 | }
|
|---|
| 2049 | else
|
|---|
| 2050 | (*d_ptr)->next = this;
|
|---|
| 2051 | }
|
|---|
| 2052 | }
|
|---|
| 2053 | else
|
|---|
| 2054 | f->deps = this;
|
|---|
| 2055 |
|
|---|
| 2056 | /* This is a hack. I need a way to communicate to snap_deps()
|
|---|
| 2057 | that the last dependency line in this file came with commands
|
|---|
| 2058 | (so that logic in snap_deps() can put it in front and all
|
|---|
| 2059 | this $< -logic works). I cannot simply rely on file->cmds
|
|---|
| 2060 | being not 0 because of the cases like the following:
|
|---|
| 2061 |
|
|---|
| 2062 | foo: bar
|
|---|
| 2063 | foo:
|
|---|
| 2064 | ...
|
|---|
| 2065 |
|
|---|
| 2066 | I am going to temporarily "borrow" UPDATING member in
|
|---|
| 2067 | `struct file' for this. */
|
|---|
| 2068 |
|
|---|
| 2069 | if (cmds != 0)
|
|---|
| 2070 | f->updating = 1;
|
|---|
| 2071 | }
|
|---|
| 2072 | }
|
|---|
| 2073 | else
|
|---|
| 2074 | {
|
|---|
| 2075 | /* Double-colon. Make a new record even if there already is one. */
|
|---|
| 2076 | f = lookup_file (name);
|
|---|
| 2077 |
|
|---|
| 2078 | /* Check for both : and :: rules. Check is_target so
|
|---|
| 2079 | we don't lose on default suffix rules or makefiles. */
|
|---|
| 2080 | if (f != 0 && f->is_target && !f->double_colon)
|
|---|
| 2081 | fatal (flocp,
|
|---|
| 2082 | _("target file `%s' has both : and :: entries"), f->name);
|
|---|
| 2083 | f = enter_file (strcache_add (name));
|
|---|
| 2084 | /* If there was an existing entry and it was a double-colon entry,
|
|---|
| 2085 | enter_file will have returned a new one, making it the prev
|
|---|
| 2086 | pointer of the old one, and setting its double_colon pointer to
|
|---|
| 2087 | the first one. */
|
|---|
| 2088 | if (f->double_colon == 0)
|
|---|
| 2089 | /* This is the first entry for this name, so we must set its
|
|---|
| 2090 | double_colon pointer to itself. */
|
|---|
| 2091 | f->double_colon = f;
|
|---|
| 2092 | f->is_target = 1;
|
|---|
| 2093 | f->deps = this;
|
|---|
| 2094 | f->cmds = cmds;
|
|---|
| 2095 | }
|
|---|
| 2096 |
|
|---|
| 2097 | /* If this is a static pattern rule, set the stem to the part of its
|
|---|
| 2098 | name that matched the `%' in the pattern, so you can use $* in the
|
|---|
| 2099 | commands. */
|
|---|
| 2100 | if (pattern)
|
|---|
| 2101 | {
|
|---|
| 2102 | static const char *percent = "%";
|
|---|
| 2103 | char *buffer = variable_expand ("");
|
|---|
| 2104 | char *o = patsubst_expand_pat (buffer, name, pattern, percent,
|
|---|
| 2105 | pattern_percent+1, percent+1);
|
|---|
| 2106 | f->stem = strcache_add_len (buffer, o - buffer);
|
|---|
| 2107 | if (this)
|
|---|
| 2108 | {
|
|---|
| 2109 | this->staticpattern = 1;
|
|---|
| 2110 | this->stem = f->stem;
|
|---|
| 2111 | }
|
|---|
| 2112 | }
|
|---|
| 2113 |
|
|---|
| 2114 | name = f->name;
|
|---|
| 2115 |
|
|---|
| 2116 | /* If this target is a default target, update DEFAULT_GOAL_FILE. */
|
|---|
| 2117 | if (streq (*default_goal_name, name)
|
|---|
| 2118 | && (default_goal_file == 0
|
|---|
| 2119 | || ! streq (default_goal_file->name, name)))
|
|---|
| 2120 | default_goal_file = f;
|
|---|
| 2121 | }
|
|---|
| 2122 |
|
|---|
| 2123 | if (implicit)
|
|---|
| 2124 | {
|
|---|
| 2125 | if (deps)
|
|---|
| 2126 | deps->need_2nd_expansion = second_expansion;
|
|---|
| 2127 | create_pattern_rule (targets, target_percents, target_idx,
|
|---|
| 2128 | two_colon, deps, cmds, 1);
|
|---|
| 2129 | }
|
|---|
| 2130 | }
|
|---|
| 2131 | |
|---|
| 2132 |
|
|---|
| 2133 | /* Search STRING for an unquoted STOPCHAR or blank (if BLANK is nonzero).
|
|---|
| 2134 | Backslashes quote STOPCHAR, blanks if BLANK is nonzero, and backslash.
|
|---|
| 2135 | Quoting backslashes are removed from STRING by compacting it into
|
|---|
| 2136 | itself. Returns a pointer to the first unquoted STOPCHAR if there is
|
|---|
| 2137 | one, or nil if there are none. STOPCHARs inside variable references are
|
|---|
| 2138 | ignored if IGNOREVARS is true.
|
|---|
| 2139 |
|
|---|
| 2140 | STOPCHAR _cannot_ be '$' if IGNOREVARS is true. */
|
|---|
| 2141 |
|
|---|
| 2142 | static char *
|
|---|
| 2143 | find_char_unquote (char *string, int stop1, int stop2, int blank,
|
|---|
| 2144 | int ignorevars)
|
|---|
| 2145 | {
|
|---|
| 2146 | unsigned int string_len = 0;
|
|---|
| 2147 | char *p = string;
|
|---|
| 2148 |
|
|---|
| 2149 | if (ignorevars)
|
|---|
| 2150 | ignorevars = '$';
|
|---|
| 2151 |
|
|---|
| 2152 | while (1)
|
|---|
| 2153 | {
|
|---|
| 2154 | if (stop2 && blank)
|
|---|
| 2155 | while (*p != '\0' && *p != ignorevars && *p != stop1 && *p != stop2
|
|---|
| 2156 | && ! isblank ((unsigned char) *p))
|
|---|
| 2157 | ++p;
|
|---|
| 2158 | else if (stop2)
|
|---|
| 2159 | while (*p != '\0' && *p != ignorevars && *p != stop1 && *p != stop2)
|
|---|
| 2160 | ++p;
|
|---|
| 2161 | else if (blank)
|
|---|
| 2162 | while (*p != '\0' && *p != ignorevars && *p != stop1
|
|---|
| 2163 | && ! isblank ((unsigned char) *p))
|
|---|
| 2164 | ++p;
|
|---|
| 2165 | else
|
|---|
| 2166 | while (*p != '\0' && *p != ignorevars && *p != stop1)
|
|---|
| 2167 | ++p;
|
|---|
| 2168 |
|
|---|
| 2169 | if (*p == '\0')
|
|---|
| 2170 | break;
|
|---|
| 2171 |
|
|---|
| 2172 | /* If we stopped due to a variable reference, skip over its contents. */
|
|---|
| 2173 | if (*p == ignorevars)
|
|---|
| 2174 | {
|
|---|
| 2175 | char openparen = p[1];
|
|---|
| 2176 |
|
|---|
| 2177 | p += 2;
|
|---|
| 2178 |
|
|---|
| 2179 | /* Skip the contents of a non-quoted, multi-char variable ref. */
|
|---|
| 2180 | if (openparen == '(' || openparen == '{')
|
|---|
| 2181 | {
|
|---|
| 2182 | unsigned int pcount = 1;
|
|---|
| 2183 | char closeparen = (openparen == '(' ? ')' : '}');
|
|---|
| 2184 |
|
|---|
| 2185 | while (*p)
|
|---|
| 2186 | {
|
|---|
| 2187 | if (*p == openparen)
|
|---|
| 2188 | ++pcount;
|
|---|
| 2189 | else if (*p == closeparen)
|
|---|
| 2190 | if (--pcount == 0)
|
|---|
| 2191 | {
|
|---|
| 2192 | ++p;
|
|---|
| 2193 | break;
|
|---|
| 2194 | }
|
|---|
| 2195 | ++p;
|
|---|
| 2196 | }
|
|---|
| 2197 | }
|
|---|
| 2198 |
|
|---|
| 2199 | /* Skipped the variable reference: look for STOPCHARS again. */
|
|---|
| 2200 | continue;
|
|---|
| 2201 | }
|
|---|
| 2202 |
|
|---|
| 2203 | if (p > string && p[-1] == '\\')
|
|---|
| 2204 | {
|
|---|
| 2205 | /* Search for more backslashes. */
|
|---|
| 2206 | int i = -2;
|
|---|
| 2207 | while (&p[i] >= string && p[i] == '\\')
|
|---|
| 2208 | --i;
|
|---|
| 2209 | ++i;
|
|---|
| 2210 | /* Only compute the length if really needed. */
|
|---|
| 2211 | if (string_len == 0)
|
|---|
| 2212 | string_len = strlen (string);
|
|---|
| 2213 | /* The number of backslashes is now -I.
|
|---|
| 2214 | Copy P over itself to swallow half of them. */
|
|---|
| 2215 | memmove (&p[i], &p[i/2], (string_len - (p - string)) - (i/2) + 1);
|
|---|
| 2216 | p += i/2;
|
|---|
| 2217 | if (i % 2 == 0)
|
|---|
| 2218 | /* All the backslashes quoted each other; the STOPCHAR was
|
|---|
| 2219 | unquoted. */
|
|---|
| 2220 | return p;
|
|---|
| 2221 |
|
|---|
| 2222 | /* The STOPCHAR was quoted by a backslash. Look for another. */
|
|---|
| 2223 | }
|
|---|
| 2224 | else
|
|---|
| 2225 | /* No backslash in sight. */
|
|---|
| 2226 | return p;
|
|---|
| 2227 | }
|
|---|
| 2228 |
|
|---|
| 2229 | /* Never hit a STOPCHAR or blank (with BLANK nonzero). */
|
|---|
| 2230 | return 0;
|
|---|
| 2231 | }
|
|---|
| 2232 |
|
|---|
| 2233 | /* Search PATTERN for an unquoted % and handle quoting. */
|
|---|
| 2234 |
|
|---|
| 2235 | char *
|
|---|
| 2236 | find_percent (char *pattern)
|
|---|
| 2237 | {
|
|---|
| 2238 | return find_char_unquote (pattern, '%', 0, 0, 0);
|
|---|
| 2239 | }
|
|---|
| 2240 |
|
|---|
| 2241 | /* Search STRING for an unquoted % and handle quoting. Returns a pointer to
|
|---|
| 2242 | the % or NULL if no % was found.
|
|---|
| 2243 | This version is used with strings in the string cache: if there's a need to
|
|---|
| 2244 | modify the string a new version will be added to the string cache and
|
|---|
| 2245 | *STRING will be set to that. */
|
|---|
| 2246 |
|
|---|
| 2247 | const char *
|
|---|
| 2248 | find_percent_cached (const char **string)
|
|---|
| 2249 | {
|
|---|
| 2250 | const char *p = *string;
|
|---|
| 2251 | char *new = 0;
|
|---|
| 2252 | int slen;
|
|---|
| 2253 |
|
|---|
| 2254 | /* If the first char is a % return now. This lets us avoid extra tests
|
|---|
| 2255 | inside the loop. */
|
|---|
| 2256 | if (*p == '%')
|
|---|
| 2257 | return p;
|
|---|
| 2258 |
|
|---|
| 2259 | while (1)
|
|---|
| 2260 | {
|
|---|
| 2261 | while (*p != '\0' && *p != '%')
|
|---|
| 2262 | ++p;
|
|---|
| 2263 |
|
|---|
| 2264 | if (*p == '\0')
|
|---|
| 2265 | break;
|
|---|
| 2266 |
|
|---|
| 2267 | /* See if this % is escaped with a backslash; if not we're done. */
|
|---|
| 2268 | if (p[-1] != '\\')
|
|---|
| 2269 | break;
|
|---|
| 2270 |
|
|---|
| 2271 | {
|
|---|
| 2272 | /* Search for more backslashes. */
|
|---|
| 2273 | char *pv;
|
|---|
| 2274 | int i = -2;
|
|---|
| 2275 |
|
|---|
| 2276 | while (&p[i] >= *string && p[i] == '\\')
|
|---|
| 2277 | --i;
|
|---|
| 2278 | ++i;
|
|---|
| 2279 |
|
|---|
| 2280 | /* At this point we know we'll need to allocate a new string.
|
|---|
| 2281 | Make a copy if we haven't yet done so. */
|
|---|
| 2282 | if (! new)
|
|---|
| 2283 | {
|
|---|
| 2284 | slen = strlen (*string);
|
|---|
| 2285 | new = alloca (slen + 1);
|
|---|
| 2286 | memcpy (new, *string, slen + 1);
|
|---|
| 2287 | p = new + (p - *string);
|
|---|
| 2288 | *string = new;
|
|---|
| 2289 | }
|
|---|
| 2290 |
|
|---|
| 2291 | /* At this point *string, p, and new all point into the same string.
|
|---|
| 2292 | Get a non-const version of p so we can modify new. */
|
|---|
| 2293 | pv = new + (p - *string);
|
|---|
| 2294 |
|
|---|
| 2295 | /* The number of backslashes is now -I.
|
|---|
| 2296 | Copy P over itself to swallow half of them. */
|
|---|
| 2297 | memmove (&pv[i], &pv[i/2], (slen - (pv - new)) - (i/2) + 1);
|
|---|
| 2298 | p += i/2;
|
|---|
| 2299 |
|
|---|
| 2300 | /* If the backslashes quoted each other; the % was unquoted. */
|
|---|
| 2301 | if (i % 2 == 0)
|
|---|
| 2302 | break;
|
|---|
| 2303 | }
|
|---|
| 2304 | }
|
|---|
| 2305 |
|
|---|
| 2306 | /* If we had to change STRING, add it to the strcache. */
|
|---|
| 2307 | if (new)
|
|---|
| 2308 | {
|
|---|
| 2309 | *string = strcache_add (*string);
|
|---|
| 2310 | p = *string + (p - new);
|
|---|
| 2311 | }
|
|---|
| 2312 |
|
|---|
| 2313 | /* If we didn't find a %, return NULL. Otherwise return a ptr to it. */
|
|---|
| 2314 | return (*p == '\0') ? NULL : p;
|
|---|
| 2315 | }
|
|---|
| 2316 | |
|---|
| 2317 |
|
|---|
| 2318 | /* Parse a string into a sequence of filenames represented as a
|
|---|
| 2319 | chain of struct nameseq's in reverse order and return that chain.
|
|---|
| 2320 |
|
|---|
| 2321 | The string is passed as STRINGP, the address of a string pointer.
|
|---|
| 2322 | The string pointer is updated to point at the first character
|
|---|
| 2323 | not parsed, which either is a null char or equals STOPCHAR.
|
|---|
| 2324 |
|
|---|
| 2325 | SIZE is how big to construct chain elements.
|
|---|
| 2326 | This is useful if we want them actually to be other structures
|
|---|
| 2327 | that have room for additional info.
|
|---|
| 2328 |
|
|---|
| 2329 | If STRIP is nonzero, strip `./'s off the beginning. */
|
|---|
| 2330 |
|
|---|
| 2331 | struct nameseq *
|
|---|
| 2332 | parse_file_seq (char **stringp, int stopchar, unsigned int size, int strip)
|
|---|
| 2333 | {
|
|---|
| 2334 | struct nameseq *new = 0;
|
|---|
| 2335 | struct nameseq *new1, *lastnew1;
|
|---|
| 2336 | char *p = *stringp;
|
|---|
| 2337 |
|
|---|
| 2338 | #ifdef VMS
|
|---|
| 2339 | # define VMS_COMMA ','
|
|---|
| 2340 | #else
|
|---|
| 2341 | # define VMS_COMMA 0
|
|---|
| 2342 | #endif
|
|---|
| 2343 |
|
|---|
| 2344 | while (1)
|
|---|
| 2345 | {
|
|---|
| 2346 | const char *name;
|
|---|
| 2347 | char *q;
|
|---|
| 2348 |
|
|---|
| 2349 | /* Skip whitespace; see if any more names are left. */
|
|---|
| 2350 | p = next_token (p);
|
|---|
| 2351 | if (*p == '\0')
|
|---|
| 2352 | break;
|
|---|
| 2353 | if (*p == stopchar)
|
|---|
| 2354 | break;
|
|---|
| 2355 |
|
|---|
| 2356 | /* There are, so find the end of the next name. */
|
|---|
| 2357 | q = p;
|
|---|
| 2358 | p = find_char_unquote (q, stopchar, VMS_COMMA, 1, 0);
|
|---|
| 2359 | #ifdef VMS
|
|---|
| 2360 | /* convert comma separated list to space separated */
|
|---|
| 2361 | if (p && *p == ',')
|
|---|
| 2362 | *p =' ';
|
|---|
| 2363 | #endif
|
|---|
| 2364 | #ifdef _AMIGA
|
|---|
| 2365 | if (stopchar == ':' && p && *p == ':'
|
|---|
| 2366 | && !(isspace ((unsigned char)p[1]) || !p[1]
|
|---|
| 2367 | || isspace ((unsigned char)p[-1])))
|
|---|
| 2368 | p = find_char_unquote (p+1, stopchar, VMS_COMMA, 1, 0);
|
|---|
| 2369 | #endif
|
|---|
| 2370 | #ifdef HAVE_DOS_PATHS
|
|---|
| 2371 | /* For DOS paths, skip a "C:\..." or a "C:/..." until we find the
|
|---|
| 2372 | first colon which isn't followed by a slash or a backslash.
|
|---|
| 2373 | Note that tokens separated by spaces should be treated as separate
|
|---|
| 2374 | tokens since make doesn't allow path names with spaces */
|
|---|
| 2375 | if (stopchar == ':')
|
|---|
| 2376 | while (p != 0 && !isspace ((unsigned char)*p) &&
|
|---|
| 2377 | (p[1] == '\\' || p[1] == '/') && isalpha ((unsigned char)p[-1]))
|
|---|
| 2378 | p = find_char_unquote (p + 1, stopchar, VMS_COMMA, 1, 0);
|
|---|
| 2379 | #endif
|
|---|
| 2380 | if (p == 0)
|
|---|
| 2381 | p = q + strlen (q);
|
|---|
| 2382 |
|
|---|
| 2383 | if (strip)
|
|---|
| 2384 | #ifdef VMS
|
|---|
| 2385 | /* Skip leading `[]'s. */
|
|---|
| 2386 | while (p - q > 2 && q[0] == '[' && q[1] == ']')
|
|---|
| 2387 | #else
|
|---|
| 2388 | /* Skip leading `./'s. */
|
|---|
| 2389 | while (p - q > 2 && q[0] == '.' && q[1] == '/')
|
|---|
| 2390 | #endif
|
|---|
| 2391 | {
|
|---|
| 2392 | q += 2; /* Skip "./". */
|
|---|
| 2393 | while (q < p && *q == '/')
|
|---|
| 2394 | /* Skip following slashes: ".//foo" is "foo", not "/foo". */
|
|---|
| 2395 | ++q;
|
|---|
| 2396 | }
|
|---|
| 2397 |
|
|---|
| 2398 | /* Extract the filename just found, and skip it. */
|
|---|
| 2399 |
|
|---|
| 2400 | if (q == p)
|
|---|
| 2401 | /* ".///" was stripped to "". */
|
|---|
| 2402 | #if defined(VMS)
|
|---|
| 2403 | continue;
|
|---|
| 2404 | #elif defined(_AMIGA)
|
|---|
| 2405 | name = "";
|
|---|
| 2406 | #else
|
|---|
| 2407 | name = "./";
|
|---|
| 2408 | #endif
|
|---|
| 2409 | else
|
|---|
| 2410 | #ifdef VMS
|
|---|
| 2411 | /* VMS filenames can have a ':' in them but they have to be '\'ed but we need
|
|---|
| 2412 | * to remove this '\' before we can use the filename.
|
|---|
| 2413 | * Savestring called because q may be read-only string constant.
|
|---|
| 2414 | */
|
|---|
| 2415 | {
|
|---|
| 2416 | char *qbase = xstrdup (q);
|
|---|
| 2417 | char *pbase = qbase + (p-q);
|
|---|
| 2418 | char *q1 = qbase;
|
|---|
| 2419 | char *q2 = q1;
|
|---|
| 2420 | char *p1 = pbase;
|
|---|
| 2421 |
|
|---|
| 2422 | while (q1 != pbase)
|
|---|
| 2423 | {
|
|---|
| 2424 | if (*q1 == '\\' && *(q1+1) == ':')
|
|---|
| 2425 | {
|
|---|
| 2426 | q1++;
|
|---|
| 2427 | p1--;
|
|---|
| 2428 | }
|
|---|
| 2429 | *q2++ = *q1++;
|
|---|
| 2430 | }
|
|---|
| 2431 | name = strcache_add_len (qbase, p1 - qbase);
|
|---|
| 2432 | free (qbase);
|
|---|
| 2433 | }
|
|---|
| 2434 | #else
|
|---|
| 2435 | name = strcache_add_len (q, p - q);
|
|---|
| 2436 | #endif
|
|---|
| 2437 |
|
|---|
| 2438 | /* Add it to the front of the chain. */
|
|---|
| 2439 | new1 = xmalloc (size);
|
|---|
| 2440 | memset (new1, '\0', size);
|
|---|
| 2441 | new1->name = name;
|
|---|
| 2442 | new1->next = new;
|
|---|
| 2443 | new = new1;
|
|---|
| 2444 | }
|
|---|
| 2445 |
|
|---|
| 2446 | #ifndef NO_ARCHIVES
|
|---|
| 2447 |
|
|---|
| 2448 | /* Look for multi-word archive references.
|
|---|
| 2449 | They are indicated by a elt ending with an unmatched `)' and
|
|---|
| 2450 | an elt further down the chain (i.e., previous in the file list)
|
|---|
| 2451 | with an unmatched `(' (e.g., "lib(mem"). */
|
|---|
| 2452 |
|
|---|
| 2453 | new1 = new;
|
|---|
| 2454 | lastnew1 = 0;
|
|---|
| 2455 | while (new1 != 0)
|
|---|
| 2456 | if (new1->name[0] != '(' /* Don't catch "(%)" and suchlike. */
|
|---|
| 2457 | && new1->name[strlen (new1->name) - 1] == ')'
|
|---|
| 2458 | && strchr (new1->name, '(') == 0)
|
|---|
| 2459 | {
|
|---|
| 2460 | /* NEW1 ends with a `)' but does not contain a `('.
|
|---|
| 2461 | Look back for an elt with an opening `(' but no closing `)'. */
|
|---|
| 2462 |
|
|---|
| 2463 | struct nameseq *n = new1->next, *lastn = new1;
|
|---|
| 2464 | char *paren = 0;
|
|---|
| 2465 | while (n != 0 && (paren = strchr (n->name, '(')) == 0)
|
|---|
| 2466 | {
|
|---|
| 2467 | lastn = n;
|
|---|
| 2468 | n = n->next;
|
|---|
| 2469 | }
|
|---|
| 2470 | if (n != 0
|
|---|
| 2471 | /* Ignore something starting with `(', as that cannot actually
|
|---|
| 2472 | be an archive-member reference (and treating it as such
|
|---|
| 2473 | results in an empty file name, which causes much lossage). */
|
|---|
| 2474 | && n->name[0] != '(')
|
|---|
| 2475 | {
|
|---|
| 2476 | /* N is the first element in the archive group.
|
|---|
| 2477 | Its name looks like "lib(mem" (with no closing `)'). */
|
|---|
| 2478 |
|
|---|
| 2479 | char *libname;
|
|---|
| 2480 |
|
|---|
| 2481 | /* Copy "lib(" into LIBNAME. */
|
|---|
| 2482 | ++paren;
|
|---|
| 2483 | libname = alloca (paren - n->name + 1);
|
|---|
| 2484 | memcpy (libname, n->name, paren - n->name);
|
|---|
| 2485 | libname[paren - n->name] = '\0';
|
|---|
| 2486 |
|
|---|
| 2487 | if (*paren == '\0')
|
|---|
| 2488 | {
|
|---|
| 2489 | /* N was just "lib(", part of something like "lib( a b)".
|
|---|
| 2490 | Edit it out of the chain and free its storage. */
|
|---|
| 2491 | lastn->next = n->next;
|
|---|
| 2492 | free (n);
|
|---|
| 2493 | /* LASTN->next is the new stopping elt for the loop below. */
|
|---|
| 2494 | n = lastn->next;
|
|---|
| 2495 | }
|
|---|
| 2496 | else
|
|---|
| 2497 | {
|
|---|
| 2498 | /* Replace N's name with the full archive reference. */
|
|---|
| 2499 | n->name = strcache_add (concat (libname, paren, ")"));
|
|---|
| 2500 | }
|
|---|
| 2501 |
|
|---|
| 2502 | if (new1->name[1] == '\0')
|
|---|
| 2503 | {
|
|---|
| 2504 | /* NEW1 is just ")", part of something like "lib(a b )".
|
|---|
| 2505 | Omit it from the chain and free its storage. */
|
|---|
| 2506 | if (lastnew1 == 0)
|
|---|
| 2507 | new = new1->next;
|
|---|
| 2508 | else
|
|---|
| 2509 | lastnew1->next = new1->next;
|
|---|
| 2510 | lastn = new1;
|
|---|
| 2511 | new1 = new1->next;
|
|---|
| 2512 | free (lastn);
|
|---|
| 2513 | }
|
|---|
| 2514 | else
|
|---|
| 2515 | {
|
|---|
| 2516 | /* Replace also NEW1->name, which already has closing `)'. */
|
|---|
| 2517 | new1->name = strcache_add (concat (libname, new1->name, ""));
|
|---|
| 2518 | new1 = new1->next;
|
|---|
| 2519 | }
|
|---|
| 2520 |
|
|---|
| 2521 | /* Trace back from NEW1 (the end of the list) until N
|
|---|
| 2522 | (the beginning of the list), rewriting each name
|
|---|
| 2523 | with the full archive reference. */
|
|---|
| 2524 |
|
|---|
| 2525 | while (new1 != n)
|
|---|
| 2526 | {
|
|---|
| 2527 | new1->name = strcache_add (concat (libname, new1->name, ")"));
|
|---|
| 2528 | lastnew1 = new1;
|
|---|
| 2529 | new1 = new1->next;
|
|---|
| 2530 | }
|
|---|
| 2531 | }
|
|---|
| 2532 | else
|
|---|
| 2533 | {
|
|---|
| 2534 | /* No frobnication happening. Just step down the list. */
|
|---|
| 2535 | lastnew1 = new1;
|
|---|
| 2536 | new1 = new1->next;
|
|---|
| 2537 | }
|
|---|
| 2538 | }
|
|---|
| 2539 | else
|
|---|
| 2540 | {
|
|---|
| 2541 | lastnew1 = new1;
|
|---|
| 2542 | new1 = new1->next;
|
|---|
| 2543 | }
|
|---|
| 2544 |
|
|---|
| 2545 | #endif
|
|---|
| 2546 |
|
|---|
| 2547 | *stringp = p;
|
|---|
| 2548 | return new;
|
|---|
| 2549 | }
|
|---|
| 2550 | |
|---|
| 2551 |
|
|---|
| 2552 | /* Find the next line of text in an eval buffer, combining continuation lines
|
|---|
| 2553 | into one line.
|
|---|
| 2554 | Return the number of actual lines read (> 1 if continuation lines).
|
|---|
| 2555 | Returns -1 if there's nothing left in the buffer.
|
|---|
| 2556 |
|
|---|
| 2557 | After this function, ebuf->buffer points to the first character of the
|
|---|
| 2558 | line we just found.
|
|---|
| 2559 | */
|
|---|
| 2560 |
|
|---|
| 2561 | /* Read a line of text from a STRING.
|
|---|
| 2562 | Since we aren't really reading from a file, don't bother with linenumbers.
|
|---|
| 2563 | */
|
|---|
| 2564 |
|
|---|
| 2565 | static unsigned long
|
|---|
| 2566 | readstring (struct ebuffer *ebuf)
|
|---|
| 2567 | {
|
|---|
| 2568 | char *eol;
|
|---|
| 2569 |
|
|---|
| 2570 | /* If there is nothing left in this buffer, return 0. */
|
|---|
| 2571 | if (ebuf->bufnext >= ebuf->bufstart + ebuf->size)
|
|---|
| 2572 | return -1;
|
|---|
| 2573 |
|
|---|
| 2574 | /* Set up a new starting point for the buffer, and find the end of the
|
|---|
| 2575 | next logical line (taking into account backslash/newline pairs). */
|
|---|
| 2576 |
|
|---|
| 2577 | eol = ebuf->buffer = ebuf->bufnext;
|
|---|
| 2578 |
|
|---|
| 2579 | while (1)
|
|---|
| 2580 | {
|
|---|
| 2581 | int backslash = 0;
|
|---|
| 2582 | char *bol = eol;
|
|---|
| 2583 | char *p;
|
|---|
| 2584 |
|
|---|
| 2585 | /* Find the next newline. At EOS, stop. */
|
|---|
| 2586 | eol = p = strchr (eol , '\n');
|
|---|
| 2587 | if (!eol)
|
|---|
| 2588 | {
|
|---|
| 2589 | ebuf->bufnext = ebuf->bufstart + ebuf->size + 1;
|
|---|
| 2590 | return 0;
|
|---|
| 2591 | }
|
|---|
| 2592 |
|
|---|
| 2593 | /* Found a newline; if it's escaped continue; else we're done. */
|
|---|
| 2594 | while (p > bol && *(--p) == '\\')
|
|---|
| 2595 | backslash = !backslash;
|
|---|
| 2596 | if (!backslash)
|
|---|
| 2597 | break;
|
|---|
| 2598 | ++eol;
|
|---|
| 2599 | }
|
|---|
| 2600 |
|
|---|
| 2601 | /* Overwrite the newline char. */
|
|---|
| 2602 | *eol = '\0';
|
|---|
| 2603 | ebuf->bufnext = eol+1;
|
|---|
| 2604 |
|
|---|
| 2605 | return 0;
|
|---|
| 2606 | }
|
|---|
| 2607 |
|
|---|
| 2608 | static long
|
|---|
| 2609 | readline (struct ebuffer *ebuf)
|
|---|
| 2610 | {
|
|---|
| 2611 | char *p;
|
|---|
| 2612 | char *end;
|
|---|
| 2613 | char *start;
|
|---|
| 2614 | long nlines = 0;
|
|---|
| 2615 |
|
|---|
| 2616 | /* The behaviors between string and stream buffers are different enough to
|
|---|
| 2617 | warrant different functions. Do the Right Thing. */
|
|---|
| 2618 |
|
|---|
| 2619 | if (!ebuf->fp)
|
|---|
| 2620 | return readstring (ebuf);
|
|---|
| 2621 |
|
|---|
| 2622 | /* When reading from a file, we always start over at the beginning of the
|
|---|
| 2623 | buffer for each new line. */
|
|---|
| 2624 |
|
|---|
| 2625 | p = start = ebuf->bufstart;
|
|---|
| 2626 | end = p + ebuf->size;
|
|---|
| 2627 | *p = '\0';
|
|---|
| 2628 |
|
|---|
| 2629 | while (fgets (p, end - p, ebuf->fp) != 0)
|
|---|
| 2630 | {
|
|---|
| 2631 | char *p2;
|
|---|
| 2632 | unsigned long len;
|
|---|
| 2633 | int backslash;
|
|---|
| 2634 |
|
|---|
| 2635 | len = strlen (p);
|
|---|
| 2636 | if (len == 0)
|
|---|
| 2637 | {
|
|---|
| 2638 | /* This only happens when the first thing on the line is a '\0'.
|
|---|
| 2639 | It is a pretty hopeless case, but (wonder of wonders) Athena
|
|---|
| 2640 | lossage strikes again! (xmkmf puts NULs in its makefiles.)
|
|---|
| 2641 | There is nothing really to be done; we synthesize a newline so
|
|---|
| 2642 | the following line doesn't appear to be part of this line. */
|
|---|
| 2643 | error (&ebuf->floc,
|
|---|
| 2644 | _("warning: NUL character seen; rest of line ignored"));
|
|---|
| 2645 | p[0] = '\n';
|
|---|
| 2646 | len = 1;
|
|---|
| 2647 | }
|
|---|
| 2648 |
|
|---|
| 2649 | /* Jump past the text we just read. */
|
|---|
| 2650 | p += len;
|
|---|
| 2651 |
|
|---|
| 2652 | /* If the last char isn't a newline, the whole line didn't fit into the
|
|---|
| 2653 | buffer. Get some more buffer and try again. */
|
|---|
| 2654 | if (p[-1] != '\n')
|
|---|
| 2655 | goto more_buffer;
|
|---|
| 2656 |
|
|---|
| 2657 | /* We got a newline, so add one to the count of lines. */
|
|---|
| 2658 | ++nlines;
|
|---|
| 2659 |
|
|---|
| 2660 | #if !defined(WINDOWS32) && !defined(__MSDOS__) && !defined(__EMX__)
|
|---|
| 2661 | /* Check to see if the line was really ended with CRLF; if so ignore
|
|---|
| 2662 | the CR. */
|
|---|
| 2663 | if ((p - start) > 1 && p[-2] == '\r')
|
|---|
| 2664 | {
|
|---|
| 2665 | --p;
|
|---|
| 2666 | p[-1] = '\n';
|
|---|
| 2667 | }
|
|---|
| 2668 | #endif
|
|---|
| 2669 |
|
|---|
| 2670 | backslash = 0;
|
|---|
| 2671 | for (p2 = p - 2; p2 >= start; --p2)
|
|---|
| 2672 | {
|
|---|
| 2673 | if (*p2 != '\\')
|
|---|
| 2674 | break;
|
|---|
| 2675 | backslash = !backslash;
|
|---|
| 2676 | }
|
|---|
| 2677 |
|
|---|
| 2678 | if (!backslash)
|
|---|
| 2679 | {
|
|---|
| 2680 | p[-1] = '\0';
|
|---|
| 2681 | break;
|
|---|
| 2682 | }
|
|---|
| 2683 |
|
|---|
| 2684 | /* It was a backslash/newline combo. If we have more space, read
|
|---|
| 2685 | another line. */
|
|---|
| 2686 | if (end - p >= 80)
|
|---|
| 2687 | continue;
|
|---|
| 2688 |
|
|---|
| 2689 | /* We need more space at the end of our buffer, so realloc it.
|
|---|
| 2690 | Make sure to preserve the current offset of p. */
|
|---|
| 2691 | more_buffer:
|
|---|
| 2692 | {
|
|---|
| 2693 | unsigned long off = p - start;
|
|---|
| 2694 | ebuf->size *= 2;
|
|---|
| 2695 | start = ebuf->buffer = ebuf->bufstart = xrealloc (start, ebuf->size);
|
|---|
| 2696 | p = start + off;
|
|---|
| 2697 | end = start + ebuf->size;
|
|---|
| 2698 | *p = '\0';
|
|---|
| 2699 | }
|
|---|
| 2700 | }
|
|---|
| 2701 |
|
|---|
| 2702 | if (ferror (ebuf->fp))
|
|---|
| 2703 | pfatal_with_name (ebuf->floc.filenm);
|
|---|
| 2704 |
|
|---|
| 2705 | /* If we found some lines, return how many.
|
|---|
| 2706 | If we didn't, but we did find _something_, that indicates we read the last
|
|---|
| 2707 | line of a file with no final newline; return 1.
|
|---|
| 2708 | If we read nothing, we're at EOF; return -1. */
|
|---|
| 2709 |
|
|---|
| 2710 | return nlines ? nlines : p == ebuf->bufstart ? -1 : 1;
|
|---|
| 2711 | }
|
|---|
| 2712 | |
|---|
| 2713 |
|
|---|
| 2714 | /* Parse the next "makefile word" from the input buffer, and return info
|
|---|
| 2715 | about it.
|
|---|
| 2716 |
|
|---|
| 2717 | A "makefile word" is one of:
|
|---|
| 2718 |
|
|---|
| 2719 | w_bogus Should never happen
|
|---|
| 2720 | w_eol End of input
|
|---|
| 2721 | w_static A static word; cannot be expanded
|
|---|
| 2722 | w_variable A word containing one or more variables/functions
|
|---|
| 2723 | w_colon A colon
|
|---|
| 2724 | w_dcolon A double-colon
|
|---|
| 2725 | w_semicolon A semicolon
|
|---|
| 2726 | w_varassign A variable assignment operator (=, :=, +=, or ?=)
|
|---|
| 2727 |
|
|---|
| 2728 | Note that this function is only used when reading certain parts of the
|
|---|
| 2729 | makefile. Don't use it where special rules hold sway (RHS of a variable,
|
|---|
| 2730 | in a command list, etc.) */
|
|---|
| 2731 |
|
|---|
| 2732 | static enum make_word_type
|
|---|
| 2733 | get_next_mword (char *buffer, char *delim, char **startp, unsigned int *length)
|
|---|
| 2734 | {
|
|---|
| 2735 | enum make_word_type wtype = w_bogus;
|
|---|
| 2736 | char *p = buffer, *beg;
|
|---|
| 2737 | char c;
|
|---|
| 2738 |
|
|---|
| 2739 | /* Skip any leading whitespace. */
|
|---|
| 2740 | while (isblank ((unsigned char)*p))
|
|---|
| 2741 | ++p;
|
|---|
| 2742 |
|
|---|
| 2743 | beg = p;
|
|---|
| 2744 | c = *(p++);
|
|---|
| 2745 | switch (c)
|
|---|
| 2746 | {
|
|---|
| 2747 | case '\0':
|
|---|
| 2748 | wtype = w_eol;
|
|---|
| 2749 | break;
|
|---|
| 2750 |
|
|---|
| 2751 | case ';':
|
|---|
| 2752 | wtype = w_semicolon;
|
|---|
| 2753 | break;
|
|---|
| 2754 |
|
|---|
| 2755 | case '=':
|
|---|
| 2756 | wtype = w_varassign;
|
|---|
| 2757 | break;
|
|---|
| 2758 |
|
|---|
| 2759 | case ':':
|
|---|
| 2760 | wtype = w_colon;
|
|---|
| 2761 | switch (*p)
|
|---|
| 2762 | {
|
|---|
| 2763 | case ':':
|
|---|
| 2764 | ++p;
|
|---|
| 2765 | wtype = w_dcolon;
|
|---|
| 2766 | break;
|
|---|
| 2767 |
|
|---|
| 2768 | case '=':
|
|---|
| 2769 | ++p;
|
|---|
| 2770 | wtype = w_varassign;
|
|---|
| 2771 | break;
|
|---|
| 2772 | }
|
|---|
| 2773 | break;
|
|---|
| 2774 |
|
|---|
| 2775 | case '+':
|
|---|
| 2776 | case '?':
|
|---|
| 2777 | if (*p == '=')
|
|---|
| 2778 | {
|
|---|
| 2779 | ++p;
|
|---|
| 2780 | wtype = w_varassign;
|
|---|
| 2781 | break;
|
|---|
| 2782 | }
|
|---|
| 2783 |
|
|---|
| 2784 | default:
|
|---|
| 2785 | if (delim && strchr (delim, c))
|
|---|
| 2786 | wtype = w_static;
|
|---|
| 2787 | break;
|
|---|
| 2788 | }
|
|---|
| 2789 |
|
|---|
| 2790 | /* Did we find something? If so, return now. */
|
|---|
| 2791 | if (wtype != w_bogus)
|
|---|
| 2792 | goto done;
|
|---|
| 2793 |
|
|---|
| 2794 | /* This is some non-operator word. A word consists of the longest
|
|---|
| 2795 | string of characters that doesn't contain whitespace, one of [:=#],
|
|---|
| 2796 | or [?+]=, or one of the chars in the DELIM string. */
|
|---|
| 2797 |
|
|---|
| 2798 | /* We start out assuming a static word; if we see a variable we'll
|
|---|
| 2799 | adjust our assumptions then. */
|
|---|
| 2800 | wtype = w_static;
|
|---|
| 2801 |
|
|---|
| 2802 | /* We already found the first value of "c", above. */
|
|---|
| 2803 | while (1)
|
|---|
| 2804 | {
|
|---|
| 2805 | char closeparen;
|
|---|
| 2806 | int count;
|
|---|
| 2807 |
|
|---|
| 2808 | switch (c)
|
|---|
| 2809 | {
|
|---|
| 2810 | case '\0':
|
|---|
| 2811 | case ' ':
|
|---|
| 2812 | case '\t':
|
|---|
| 2813 | case '=':
|
|---|
| 2814 | goto done_word;
|
|---|
| 2815 |
|
|---|
| 2816 | case ':':
|
|---|
| 2817 | #ifdef HAVE_DOS_PATHS
|
|---|
| 2818 | /* A word CAN include a colon in its drive spec. The drive
|
|---|
| 2819 | spec is allowed either at the beginning of a word, or as part
|
|---|
| 2820 | of the archive member name, like in "libfoo.a(d:/foo/bar.o)". */
|
|---|
| 2821 | if (!(p - beg >= 2
|
|---|
| 2822 | && (*p == '/' || *p == '\\') && isalpha ((unsigned char)p[-2])
|
|---|
| 2823 | && (p - beg == 2 || p[-3] == '(')))
|
|---|
| 2824 | #endif
|
|---|
| 2825 | goto done_word;
|
|---|
| 2826 |
|
|---|
| 2827 | case '$':
|
|---|
| 2828 | c = *(p++);
|
|---|
| 2829 | if (c == '$')
|
|---|
| 2830 | break;
|
|---|
| 2831 |
|
|---|
| 2832 | /* This is a variable reference, so note that it's expandable.
|
|---|
| 2833 | Then read it to the matching close paren. */
|
|---|
| 2834 | wtype = w_variable;
|
|---|
| 2835 |
|
|---|
| 2836 | if (c == '(')
|
|---|
| 2837 | closeparen = ')';
|
|---|
| 2838 | else if (c == '{')
|
|---|
| 2839 | closeparen = '}';
|
|---|
| 2840 | else
|
|---|
| 2841 | /* This is a single-letter variable reference. */
|
|---|
| 2842 | break;
|
|---|
| 2843 |
|
|---|
| 2844 | for (count=0; *p != '\0'; ++p)
|
|---|
| 2845 | {
|
|---|
| 2846 | if (*p == c)
|
|---|
| 2847 | ++count;
|
|---|
| 2848 | else if (*p == closeparen && --count < 0)
|
|---|
| 2849 | {
|
|---|
| 2850 | ++p;
|
|---|
| 2851 | break;
|
|---|
| 2852 | }
|
|---|
| 2853 | }
|
|---|
| 2854 | break;
|
|---|
| 2855 |
|
|---|
| 2856 | case '?':
|
|---|
| 2857 | case '+':
|
|---|
| 2858 | if (*p == '=')
|
|---|
| 2859 | goto done_word;
|
|---|
| 2860 | break;
|
|---|
| 2861 |
|
|---|
| 2862 | case '\\':
|
|---|
| 2863 | switch (*p)
|
|---|
| 2864 | {
|
|---|
| 2865 | case ':':
|
|---|
| 2866 | case ';':
|
|---|
| 2867 | case '=':
|
|---|
| 2868 | case '\\':
|
|---|
| 2869 | ++p;
|
|---|
| 2870 | break;
|
|---|
| 2871 | }
|
|---|
| 2872 | break;
|
|---|
| 2873 |
|
|---|
| 2874 | default:
|
|---|
| 2875 | if (delim && strchr (delim, c))
|
|---|
| 2876 | goto done_word;
|
|---|
| 2877 | break;
|
|---|
| 2878 | }
|
|---|
| 2879 |
|
|---|
| 2880 | c = *(p++);
|
|---|
| 2881 | }
|
|---|
| 2882 | done_word:
|
|---|
| 2883 | --p;
|
|---|
| 2884 |
|
|---|
| 2885 | done:
|
|---|
| 2886 | if (startp)
|
|---|
| 2887 | *startp = beg;
|
|---|
| 2888 | if (length)
|
|---|
| 2889 | *length = p - beg;
|
|---|
| 2890 | return wtype;
|
|---|
| 2891 | }
|
|---|
| 2892 | |
|---|
| 2893 |
|
|---|
| 2894 | /* Construct the list of include directories
|
|---|
| 2895 | from the arguments and the default list. */
|
|---|
| 2896 |
|
|---|
| 2897 | void
|
|---|
| 2898 | construct_include_path (const char **arg_dirs)
|
|---|
| 2899 | {
|
|---|
| 2900 | #ifdef VAXC /* just don't ask ... */
|
|---|
| 2901 | stat_t stbuf;
|
|---|
| 2902 | #else
|
|---|
| 2903 | struct stat stbuf;
|
|---|
| 2904 | #endif
|
|---|
| 2905 | const char **dirs;
|
|---|
| 2906 | const char **cpp;
|
|---|
| 2907 | unsigned int idx;
|
|---|
| 2908 |
|
|---|
| 2909 | /* Compute the number of pointers we need in the table. */
|
|---|
| 2910 | idx = sizeof (default_include_directories) / sizeof (const char *);
|
|---|
| 2911 | if (arg_dirs)
|
|---|
| 2912 | for (cpp = arg_dirs; *cpp != 0; ++cpp)
|
|---|
| 2913 | ++idx;
|
|---|
| 2914 |
|
|---|
| 2915 | #ifdef __MSDOS__
|
|---|
| 2916 | /* Add one for $DJDIR. */
|
|---|
| 2917 | ++idx;
|
|---|
| 2918 | #endif
|
|---|
| 2919 |
|
|---|
| 2920 | dirs = xmalloc (idx * sizeof (const char *));
|
|---|
| 2921 |
|
|---|
| 2922 | idx = 0;
|
|---|
| 2923 | max_incl_len = 0;
|
|---|
| 2924 |
|
|---|
| 2925 | /* First consider any dirs specified with -I switches.
|
|---|
| 2926 | Ignore any that don't exist. Remember the maximum string length. */
|
|---|
| 2927 |
|
|---|
| 2928 | if (arg_dirs)
|
|---|
| 2929 | while (*arg_dirs != 0)
|
|---|
| 2930 | {
|
|---|
| 2931 | const char *dir = *(arg_dirs++);
|
|---|
| 2932 | char *expanded = 0;
|
|---|
| 2933 | int e;
|
|---|
| 2934 |
|
|---|
| 2935 | if (dir[0] == '~')
|
|---|
| 2936 | {
|
|---|
| 2937 | expanded = tilde_expand (dir);
|
|---|
| 2938 | if (expanded != 0)
|
|---|
| 2939 | dir = expanded;
|
|---|
| 2940 | }
|
|---|
| 2941 |
|
|---|
| 2942 | EINTRLOOP (e, stat (dir, &stbuf));
|
|---|
| 2943 | if (e == 0 && S_ISDIR (stbuf.st_mode))
|
|---|
| 2944 | {
|
|---|
| 2945 | unsigned int len = strlen (dir);
|
|---|
| 2946 | /* If dir name is written with trailing slashes, discard them. */
|
|---|
| 2947 | while (len > 1 && dir[len - 1] == '/')
|
|---|
| 2948 | --len;
|
|---|
| 2949 | if (len > max_incl_len)
|
|---|
| 2950 | max_incl_len = len;
|
|---|
| 2951 | dirs[idx++] = strcache_add_len (dir, len);
|
|---|
| 2952 | }
|
|---|
| 2953 |
|
|---|
| 2954 | if (expanded)
|
|---|
| 2955 | free (expanded);
|
|---|
| 2956 | }
|
|---|
| 2957 |
|
|---|
| 2958 | /* Now add the standard default dirs at the end. */
|
|---|
| 2959 |
|
|---|
| 2960 | #ifdef __MSDOS__
|
|---|
| 2961 | {
|
|---|
| 2962 | /* The environment variable $DJDIR holds the root of the DJGPP directory
|
|---|
| 2963 | tree; add ${DJDIR}/include. */
|
|---|
| 2964 | struct variable *djdir = lookup_variable ("DJDIR", 5);
|
|---|
| 2965 |
|
|---|
| 2966 | if (djdir)
|
|---|
| 2967 | {
|
|---|
| 2968 | unsigned int len = strlen (djdir->value) + 8;
|
|---|
| 2969 | char *defdir = alloca (len + 1);
|
|---|
| 2970 |
|
|---|
| 2971 | strcat (strcpy (defdir, djdir->value), "/include");
|
|---|
| 2972 | dirs[idx++] = strcache_add (defdir);
|
|---|
| 2973 |
|
|---|
| 2974 | if (len > max_incl_len)
|
|---|
| 2975 | max_incl_len = len;
|
|---|
| 2976 | }
|
|---|
| 2977 | }
|
|---|
| 2978 | #endif
|
|---|
| 2979 |
|
|---|
| 2980 | for (cpp = default_include_directories; *cpp != 0; ++cpp)
|
|---|
| 2981 | {
|
|---|
| 2982 | int e;
|
|---|
| 2983 |
|
|---|
| 2984 | EINTRLOOP (e, stat (*cpp, &stbuf));
|
|---|
| 2985 | if (e == 0 && S_ISDIR (stbuf.st_mode))
|
|---|
| 2986 | {
|
|---|
| 2987 | unsigned int len = strlen (*cpp);
|
|---|
| 2988 | /* If dir name is written with trailing slashes, discard them. */
|
|---|
| 2989 | while (len > 1 && (*cpp)[len - 1] == '/')
|
|---|
| 2990 | --len;
|
|---|
| 2991 | if (len > max_incl_len)
|
|---|
| 2992 | max_incl_len = len;
|
|---|
| 2993 | dirs[idx++] = strcache_add_len (*cpp, len);
|
|---|
| 2994 | }
|
|---|
| 2995 | }
|
|---|
| 2996 |
|
|---|
| 2997 | dirs[idx] = 0;
|
|---|
| 2998 |
|
|---|
| 2999 | /* Now add each dir to the .INCLUDE_DIRS variable. */
|
|---|
| 3000 |
|
|---|
| 3001 | for (cpp = dirs; *cpp != 0; ++cpp)
|
|---|
| 3002 | do_variable_definition (NILF, ".INCLUDE_DIRS", *cpp,
|
|---|
| 3003 | o_default, f_append, 0);
|
|---|
| 3004 |
|
|---|
| 3005 | include_directories = dirs;
|
|---|
| 3006 | }
|
|---|
| 3007 | |
|---|
| 3008 |
|
|---|
| 3009 | /* Expand ~ or ~USER at the beginning of NAME.
|
|---|
| 3010 | Return a newly malloc'd string or 0. */
|
|---|
| 3011 |
|
|---|
| 3012 | char *
|
|---|
| 3013 | tilde_expand (const char *name)
|
|---|
| 3014 | {
|
|---|
| 3015 | #ifndef VMS
|
|---|
| 3016 | if (name[1] == '/' || name[1] == '\0')
|
|---|
| 3017 | {
|
|---|
| 3018 | extern char *getenv ();
|
|---|
| 3019 | char *home_dir;
|
|---|
| 3020 | int is_variable;
|
|---|
| 3021 |
|
|---|
| 3022 | {
|
|---|
| 3023 | /* Turn off --warn-undefined-variables while we expand HOME. */
|
|---|
| 3024 | int save = warn_undefined_variables_flag;
|
|---|
| 3025 | warn_undefined_variables_flag = 0;
|
|---|
| 3026 |
|
|---|
| 3027 | home_dir = allocated_variable_expand ("$(HOME)");
|
|---|
| 3028 |
|
|---|
| 3029 | warn_undefined_variables_flag = save;
|
|---|
| 3030 | }
|
|---|
| 3031 |
|
|---|
| 3032 | is_variable = home_dir[0] != '\0';
|
|---|
| 3033 | if (!is_variable)
|
|---|
| 3034 | {
|
|---|
| 3035 | free (home_dir);
|
|---|
| 3036 | home_dir = getenv ("HOME");
|
|---|
| 3037 | }
|
|---|
| 3038 | # if !defined(_AMIGA) && !defined(WINDOWS32)
|
|---|
| 3039 | if (home_dir == 0 || home_dir[0] == '\0')
|
|---|
| 3040 | {
|
|---|
| 3041 | extern char *getlogin ();
|
|---|
| 3042 | char *logname = getlogin ();
|
|---|
| 3043 | home_dir = 0;
|
|---|
| 3044 | if (logname != 0)
|
|---|
| 3045 | {
|
|---|
| 3046 | struct passwd *p = getpwnam (logname);
|
|---|
| 3047 | if (p != 0)
|
|---|
| 3048 | home_dir = p->pw_dir;
|
|---|
| 3049 | }
|
|---|
| 3050 | }
|
|---|
| 3051 | # endif /* !AMIGA && !WINDOWS32 */
|
|---|
| 3052 | if (home_dir != 0)
|
|---|
| 3053 | {
|
|---|
| 3054 | char *new = xstrdup (concat (home_dir, "", name + 1));
|
|---|
| 3055 | if (is_variable)
|
|---|
| 3056 | free (home_dir);
|
|---|
| 3057 | return new;
|
|---|
| 3058 | }
|
|---|
| 3059 | }
|
|---|
| 3060 | # if !defined(_AMIGA) && !defined(WINDOWS32)
|
|---|
| 3061 | else
|
|---|
| 3062 | {
|
|---|
| 3063 | struct passwd *pwent;
|
|---|
| 3064 | char *userend = strchr (name + 1, '/');
|
|---|
| 3065 | if (userend != 0)
|
|---|
| 3066 | *userend = '\0';
|
|---|
| 3067 | pwent = getpwnam (name + 1);
|
|---|
| 3068 | if (pwent != 0)
|
|---|
| 3069 | {
|
|---|
| 3070 | if (userend == 0)
|
|---|
| 3071 | return xstrdup (pwent->pw_dir);
|
|---|
| 3072 | else
|
|---|
| 3073 | return xstrdup (concat (pwent->pw_dir, "/", userend + 1));
|
|---|
| 3074 | }
|
|---|
| 3075 | else if (userend != 0)
|
|---|
| 3076 | *userend = '/';
|
|---|
| 3077 | }
|
|---|
| 3078 | # endif /* !AMIGA && !WINDOWS32 */
|
|---|
| 3079 | #endif /* !VMS */
|
|---|
| 3080 | return 0;
|
|---|
| 3081 | }
|
|---|
| 3082 |
|
|---|
| 3083 | /* Given a chain of struct nameseq's describing a sequence of filenames,
|
|---|
| 3084 | in reverse of the intended order, return a new chain describing the
|
|---|
| 3085 | result of globbing the filenames. The new chain is in forward order.
|
|---|
| 3086 | The links of the old chain are freed or used in the new chain.
|
|---|
| 3087 | Likewise for the names in the old chain.
|
|---|
| 3088 |
|
|---|
| 3089 | SIZE is how big to construct chain elements.
|
|---|
| 3090 | This is useful if we want them actually to be other structures
|
|---|
| 3091 | that have room for additional info. */
|
|---|
| 3092 |
|
|---|
| 3093 | struct nameseq *
|
|---|
| 3094 | multi_glob (struct nameseq *chain, unsigned int size)
|
|---|
| 3095 | {
|
|---|
| 3096 | void dir_setup_glob (glob_t *);
|
|---|
| 3097 | struct nameseq *new = 0;
|
|---|
| 3098 | struct nameseq *old;
|
|---|
| 3099 | struct nameseq *nexto;
|
|---|
| 3100 | glob_t gl;
|
|---|
| 3101 |
|
|---|
| 3102 | dir_setup_glob (&gl);
|
|---|
| 3103 |
|
|---|
| 3104 | for (old = chain; old != 0; old = nexto)
|
|---|
| 3105 | {
|
|---|
| 3106 | const char *gname;
|
|---|
| 3107 | #ifndef NO_ARCHIVES
|
|---|
| 3108 | char *arname = 0;
|
|---|
| 3109 | char *memname = 0;
|
|---|
| 3110 | #endif
|
|---|
| 3111 | nexto = old->next;
|
|---|
| 3112 | gname = old->name;
|
|---|
| 3113 |
|
|---|
| 3114 | if (gname[0] == '~')
|
|---|
| 3115 | {
|
|---|
| 3116 | char *newname = tilde_expand (old->name);
|
|---|
| 3117 | if (newname != 0)
|
|---|
| 3118 | gname = newname;
|
|---|
| 3119 | }
|
|---|
| 3120 |
|
|---|
| 3121 | #ifndef NO_ARCHIVES
|
|---|
| 3122 | if (ar_name (gname))
|
|---|
| 3123 | {
|
|---|
| 3124 | /* OLD->name is an archive member reference. Replace it with the
|
|---|
| 3125 | archive file name, and save the member name in MEMNAME. We will
|
|---|
| 3126 | glob on the archive name and then reattach MEMNAME later. */
|
|---|
| 3127 | ar_parse_name (gname, &arname, &memname);
|
|---|
| 3128 | gname = arname;
|
|---|
| 3129 | }
|
|---|
| 3130 | #endif /* !NO_ARCHIVES */
|
|---|
| 3131 |
|
|---|
| 3132 | switch (glob (gname, GLOB_NOCHECK|GLOB_ALTDIRFUNC, NULL, &gl))
|
|---|
| 3133 | {
|
|---|
| 3134 | case 0: /* Success. */
|
|---|
| 3135 | {
|
|---|
| 3136 | int i = gl.gl_pathc;
|
|---|
| 3137 | while (i-- > 0)
|
|---|
| 3138 | {
|
|---|
| 3139 | #ifndef NO_ARCHIVES
|
|---|
| 3140 | if (memname != 0)
|
|---|
| 3141 | {
|
|---|
| 3142 | /* Try to glob on MEMNAME within the archive. */
|
|---|
| 3143 | struct nameseq *found
|
|---|
| 3144 | = ar_glob (gl.gl_pathv[i], memname, size);
|
|---|
| 3145 | if (! found)
|
|---|
| 3146 | {
|
|---|
| 3147 | /* No matches. Use MEMNAME as-is. */
|
|---|
| 3148 | unsigned int alen = strlen (gl.gl_pathv[i]);
|
|---|
| 3149 | unsigned int mlen = strlen (memname);
|
|---|
| 3150 | char *name;
|
|---|
| 3151 | struct nameseq *elt = xmalloc (size);
|
|---|
| 3152 | memset (elt, '\0', size);
|
|---|
| 3153 |
|
|---|
| 3154 | name = alloca (alen + 1 + mlen + 2);
|
|---|
| 3155 | memcpy (name, gl.gl_pathv[i], alen);
|
|---|
| 3156 | name[alen] = '(';
|
|---|
| 3157 | memcpy (name+alen+1, memname, mlen);
|
|---|
| 3158 | name[alen + 1 + mlen] = ')';
|
|---|
| 3159 | name[alen + 1 + mlen + 1] = '\0';
|
|---|
| 3160 | elt->name = strcache_add (name);
|
|---|
| 3161 | elt->next = new;
|
|---|
| 3162 | new = elt;
|
|---|
| 3163 | }
|
|---|
| 3164 | else
|
|---|
| 3165 | {
|
|---|
| 3166 | /* Find the end of the FOUND chain. */
|
|---|
| 3167 | struct nameseq *f = found;
|
|---|
| 3168 | while (f->next != 0)
|
|---|
| 3169 | f = f->next;
|
|---|
| 3170 |
|
|---|
| 3171 | /* Attach the chain being built to the end of the FOUND
|
|---|
| 3172 | chain, and make FOUND the new NEW chain. */
|
|---|
| 3173 | f->next = new;
|
|---|
| 3174 | new = found;
|
|---|
| 3175 | }
|
|---|
| 3176 | }
|
|---|
| 3177 | else
|
|---|
| 3178 | #endif /* !NO_ARCHIVES */
|
|---|
| 3179 | {
|
|---|
| 3180 | struct nameseq *elt = xmalloc (size);
|
|---|
| 3181 | memset (elt, '\0', size);
|
|---|
| 3182 | elt->name = strcache_add (gl.gl_pathv[i]);
|
|---|
| 3183 | elt->next = new;
|
|---|
| 3184 | new = elt;
|
|---|
| 3185 | }
|
|---|
| 3186 | }
|
|---|
| 3187 | globfree (&gl);
|
|---|
| 3188 | free (old);
|
|---|
| 3189 | break;
|
|---|
| 3190 | }
|
|---|
| 3191 |
|
|---|
| 3192 | case GLOB_NOSPACE:
|
|---|
| 3193 | fatal (NILF, _("virtual memory exhausted"));
|
|---|
| 3194 | break;
|
|---|
| 3195 |
|
|---|
| 3196 | default:
|
|---|
| 3197 | old->next = new;
|
|---|
| 3198 | new = old;
|
|---|
| 3199 | break;
|
|---|
| 3200 | }
|
|---|
| 3201 |
|
|---|
| 3202 | #ifndef NO_ARCHIVES
|
|---|
| 3203 | if (arname)
|
|---|
| 3204 | free (arname);
|
|---|
| 3205 | #endif
|
|---|
| 3206 | }
|
|---|
| 3207 |
|
|---|
| 3208 | return new;
|
|---|
| 3209 | }
|
|---|