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source: kBuild/trunk/src/kmk/configure.ac@ 3387

Last change on this file since 3387 was 3281, checked in by bird, 5 years ago

kmk/configure.ac: Detect st_atim.nsec too as we need this for our touch implementation.

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File size: 18.0 KB
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1# Process this file with autoconf to produce a configure script.
2#
3# Copyright (C) 1993-2016 Free Software Foundation, Inc.
4# This file is part of GNU Make.
5#
6# GNU Make is free software; you can redistribute it and/or modify it under
7# the terms of the GNU General Public License as published by the Free Software
8# Foundation; either version 3 of the License, or (at your option) any later
9# version.
10#
11# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
12# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
14# details.
15#
16# You should have received a copy of the GNU General Public License along with
17# this program. If not, see <http://www.gnu.org/licenses/>.
18
19AC_INIT([GNU make],[4.2.1],[bug-make@gnu.org])
20
21AC_PREREQ([2.69])
22
23# Autoconf setup
24AC_CONFIG_AUX_DIR([config])
25AC_CONFIG_SRCDIR([vpath.c])
26AC_CONFIG_HEADERS([config.h])
27
28# Automake setup
29# We have to enable "foreign" because ChangeLog is auto-generated
30# We cannot enable -Werror because gettext 0.18.1 has invalid content
31# When we update gettext to 0.18.3 or better we can add it again.
32# bird: Added subdir-objects
33AM_INIT_AUTOMAKE([1.15 foreign -Werror -Wall subdir-objects])
34
35# Checks for programs.
36AC_USE_SYSTEM_EXTENSIONS
37AC_PROG_CC
38AC_PROG_INSTALL
39AC_PROG_RANLIB
40AC_PROG_CPP
41AC_CHECK_PROG([AR], [ar], [ar], [ar])
42# Perl is needed for the test suite (only)
43AC_CHECK_PROG([PERL], [perl], [perl], [perl])
44
45# Needed for w32/Makefile.am
46AM_PROG_AR
47
48# Specialized system macros
49AC_CANONICAL_HOST
50AC_AIX
51AC_ISC_POSIX
52AC_MINIX
53
54# Enable gettext, in "external" mode.
55# bird: causes trouble when it doesn't find 'po' in SUBDIRS, so skip it.
56#AM_GNU_GETTEXT_VERSION([0.19.4])
57#AM_GNU_GETTEXT([external])
58
59# This test must come as early as possible after the compiler configuration
60# tests, because the choice of the file model can (in principle) affect
61# whether functions and headers are available, whether they work, etc.
62AC_SYS_LARGEFILE
63
64# Checks for libraries.
65AC_SEARCH_LIBS([getpwnam], [sun])
66
67# Checks for header files.
68AC_HEADER_STDC
69AC_HEADER_DIRENT
70AC_HEADER_STAT
71AC_HEADER_TIME
72AC_CHECK_HEADERS([stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
73 memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h \
74 sys/select.h])
75
76AM_PROG_CC_C_O
77AC_C_CONST
78AC_TYPE_SIGNAL
79AC_TYPE_UID_T
80AC_TYPE_PID_T
81AC_TYPE_OFF_T
82AC_TYPE_SIZE_T
83AC_TYPE_SSIZE_T
84AC_TYPE_UINTMAX_T
85
86# Find out whether our struct stat returns nanosecond resolution timestamps.
87
88AC_STRUCT_ST_MTIM_NSEC
89AC_STRUCT_ST_ATIM_NSEC
90AC_CACHE_CHECK([whether to use high resolution file timestamps],
91 [make_cv_file_timestamp_hi_res],
92[ make_cv_file_timestamp_hi_res=no
93 AS_IF([test "$ac_cv_struct_st_mtim_nsec" != no],
94 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
95#if HAVE_INTTYPES_H
96# include <inttypes.h>
97#endif]],
98 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
99 [make_cv_file_timestamp_hi_res=yes])
100 ])])
101AS_IF([test "$make_cv_file_timestamp_hi_res" = yes], [val=1], [val=0])
102AC_DEFINE_UNQUOTED([FILE_TIMESTAMP_HI_RES], [$val],
103 [Use high resolution file timestamps if nonzero.])
104
105AS_IF([test "$make_cv_file_timestamp_hi_res" = yes],
106[ # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
107 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
108 AC_SEARCH_LIBS([clock_gettime], [rt posix4])
109 AS_IF([test "$ac_cv_search_clock_gettime" != no],
110 [ AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
111 [Define to 1 if you have the clock_gettime function.])
112 ])
113])
114
115# Check for DOS-style pathnames.
116pds_AC_DOS_PATHS
117
118# See if we have a standard version of gettimeofday(). Since actual
119# implementations can differ, just make sure we have the most common
120# one.
121AC_CACHE_CHECK([for standard gettimeofday], [ac_cv_func_gettimeofday],
122 [ac_cv_func_gettimeofday=no
123 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
124 int main ()
125 {
126 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
127 exit (gettimeofday (&t, 0) != 0
128 || t.tv_sec < 0 || t.tv_usec < 0);
129 }]])],
130 [ac_cv_func_gettimeofday=yes],
131 [ac_cv_func_gettimeofday=no],
132 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
133AS_IF([test "$ac_cv_func_gettimeofday" = yes],
134[ AC_DEFINE([HAVE_GETTIMEOFDAY], [1],
135 [Define to 1 if you have a standard gettimeofday function])
136])
137
138AC_CHECK_FUNCS([strdup strndup mkstemp mktemp fdopen fileno \
139 dup dup2 getcwd realpath sigsetmask sigaction \
140 getgroups seteuid setegid setlinebuf setreuid setregid \
141 getrlimit setrlimit setvbuf pipe strerror strsignal \
142 lstat readlink atexit isatty ttyname pselect])
143
144# We need to check declarations, not just existence, because on Tru64 this
145# function is not declared without special flags, which themselves cause
146# other problems. We'll just use our own.
147AC_CHECK_DECLS([bsd_signal], [], [], [[#define _GNU_SOURCE 1
148#include <signal.h>]])
149
150AC_FUNC_FORK
151
152AC_FUNC_SETVBUF_REVERSED
153
154# Rumor has it that strcasecmp lives in -lresolv on some odd systems.
155# It doesn't hurt much to use our own if we can't find it so I don't
156# make the effort here.
157AC_CHECK_FUNCS([strcasecmp strncasecmp strcmpi strncmpi stricmp strnicmp])
158
159# strcoll() is used by the GNU glob library
160AC_FUNC_STRCOLL
161
162AC_FUNC_ALLOCA
163AC_FUNC_CLOSEDIR_VOID
164
165# bird: This guile detection does not work on rhel4. Disabled it all since we doesn't care about guile.
166## See if the user wants to add (or not) GNU Guile support
167#PKG_PROG_PKG_CONFIG
168#AC_ARG_WITH([guile], [AS_HELP_STRING([--with-guile],
169# [Support GNU Guile for embedded scripting])])
170#
171## For some strange reason, at least on Ubuntu, each version of Guile
172## comes with it's own PC file so we have to specify them as individual
173## packages. Ugh.
174#AS_IF([test "x$with_guile" != xno],
175#[ PKG_CHECK_MODULES([GUILE], [guile-2.0], [have_guile=yes],
176# [PKG_CHECK_MODULES([GUILE], [guile-1.8], [have_guile=yes],
177# [have_guile=no])])
178#])
179#
180#AS_IF([test "$have_guile" = yes],
181# [AC_DEFINE([HAVE_GUILE], [1], [Embed GNU Guile support])])
182#
183#AM_CONDITIONAL([HAVE_GUILE], [test "$have_guile" = yes])
184
185AC_FUNC_GETLOADAVG
186
187# AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
188# doesn't. So, we will.
189
190AS_IF([test "$ac_cv_header_nlist_h" = yes],
191[ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
192 [[struct nlist nl;
193 nl.n_name = "string";
194 return 0;]])],
195 [make_cv_nlist_struct=yes],
196 [make_cv_nlist_struct=no])
197 AS_IF([test "$make_cv_nlist_struct" = yes],
198 [ AC_DEFINE([NLIST_STRUCT], [1],
199 [Define to 1 if struct nlist.n_name is a pointer rather than an array.])
200 ])
201])
202
203AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
204 [AC_INCLUDES_DEFAULT
205#include <signal.h>
206/* NetBSD declares sys_siglist in unistd.h. */
207#if HAVE_UNISTD_H
208# include <unistd.h>
209#endif
210])
211
212
213# Check out the wait reality.
214AC_CHECK_HEADERS([sys/wait.h],[],[],[[#include <sys/types.h>]])
215AC_CHECK_FUNCS([waitpid wait3])
216AC_CACHE_CHECK([for union wait], [make_cv_union_wait],
217[ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
218#include <sys/wait.h>]],
219 [[union wait status; int pid; pid = wait (&status);
220#ifdef WEXITSTATUS
221/* Some POSIXoid systems have both the new-style macros and the old
222 union wait type, and they do not work together. If union wait
223 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
224 if (WEXITSTATUS (status) != 0) pid = -1;
225#ifdef WTERMSIG
226 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
227 -- blow chunks here --
228#endif
229#endif
230#ifdef HAVE_WAITPID
231 /* Make sure union wait works with waitpid. */
232 pid = waitpid (-1, &status, 0);
233#endif
234 ]])],
235 [make_cv_union_wait=yes],
236 [make_cv_union_wait=no])
237])
238AS_IF([test "$make_cv_union_wait" = yes],
239[ AC_DEFINE([HAVE_UNION_WAIT], [1],
240 [Define to 1 if you have the 'union wait' type in <sys/wait.h>.])
241])
242
243
244# If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
245AS_IF([test "$PATH_SEPARATOR" = ';'],
246[ AC_DEFINE([HAVE_DOS_PATHS], [1],
247 [Define to 1 if your system requires backslashes or drive specs in pathnames.])
248])
249
250# See if the user wants to use pmake's "customs" distributed build capability
251AC_SUBST([REMOTE]) REMOTE=stub
252use_customs=false
253AC_ARG_WITH([customs],
254[AC_HELP_STRING([--with-customs=DIR],
255 [enable remote jobs via Customs--see README.customs])],
256[ AS_CASE([$withval], [n|no], [:],
257 [make_cppflags="$CPPFLAGS"
258 AS_CASE([$withval],
259 [y|ye|yes], [:],
260 [CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
261 make_ldflags="$LDFLAGS -L$with_customs/lib"])
262 CF_NETLIBS
263 AC_CHECK_HEADER([customs.h],
264 [use_customs=true
265 REMOTE=cstms
266 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
267 [with_customs=no
268 CPPFLAGS="$make_cppflags" make_badcust=yes])
269 ])
270])
271
272# Tell automake about this, so it can include the right .c files.
273AM_CONDITIONAL([USE_CUSTOMS], [test "$use_customs" = true])
274
275# See if the user asked to handle case insensitive file systems.
276AH_TEMPLATE([HAVE_CASE_INSENSITIVE_FS], [Use case insensitive file names])
277AC_ARG_ENABLE([case-insensitive-file-system],
278 AC_HELP_STRING([--enable-case-insensitive-file-system],
279 [assume file systems are case insensitive]),
280 [AS_IF([test "$enableval" = yes], [AC_DEFINE([HAVE_CASE_INSENSITIVE_FS])])])
281
282# See if we can handle the job server feature, and if the user wants it.
283AC_ARG_ENABLE([job-server],
284 AC_HELP_STRING([--disable-job-server],
285 [disallow recursive make communication during -jN]),
286 [make_cv_job_server="$enableval" user_job_server="$enableval"],
287 [make_cv_job_server="yes"])
288
289AS_IF([test "$ac_cv_func_waitpid" = no && test "$ac_cv_func_wait3" = no],
290 [has_wait_nohang=no],
291 [has_wait_nohang=yes])
292
293AC_CACHE_CHECK([for SA_RESTART], [make_cv_sa_restart], [
294 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
295 [[return SA_RESTART;]])],
296 [make_cv_sa_restart=yes],
297 [make_cv_sa_restart=no])])
298
299AS_IF([test "$make_cv_sa_restart" != no],
300[ AC_DEFINE([HAVE_SA_RESTART], [1],
301 [Define to 1 if <signal.h> defines the SA_RESTART constant.])
302])
303
304# Only allow jobserver on systems that support it
305AS_CASE([/$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/],
306 [*/no/*], [make_cv_job_server=no])
307
308# Also supported on OS2 and MinGW
309AS_CASE([$host_os], [os2*|mingw*], [make_cv_job_server=yes])
310
311# If we support it and the user didn't disable it, build with jobserver
312AS_CASE([/$make_cv_job_server/$user_job_server/],
313 [*/no/*], [: no jobserver],
314 [AC_DEFINE(MAKE_JOBSERVER, 1,
315 [Define to 1 to enable job server support in GNU make.])
316 ])
317
318# If dl*() functions are supported we can enable the load operation
319AC_CHECK_DECLS([dlopen, dlsym, dlerror], [], [],
320 [[#include <dlfcn.h>]])
321
322AC_ARG_ENABLE([load],
323 AC_HELP_STRING([--disable-load],
324 [disable support for the 'load' operation]),
325 [make_cv_load="$enableval" user_load="$enableval"],
326 [make_cv_load="yes"])
327
328AS_CASE([/$ac_cv_have_decl_dlopen/$ac_cv_have_decl_dlsym/$ac_cv_have_decl_dlerror/],
329 [*/no/*], [make_cv_load=no])
330
331# We might need -ldl
332AS_IF([test "$make_cv_load" = yes], [
333 AC_SEARCH_LIBS([dlopen], [dl], [], [make_cv_load=])
334 ])
335
336AS_CASE([/$make_cv_load/$user_load/],
337 [*/no/*], [make_cv_load=no],
338 [AC_DEFINE(MAKE_LOAD, 1,
339 [Define to 1 to enable 'load' support in GNU make.])
340 ])
341
342# If we want load support, we might need to link with export-dynamic.
343# See if we can figure it out. Unfortunately this is very difficult.
344# For example passing -rdynamic to the SunPRO linker gives a warning
345# but succeeds and creates a shared object, not an executable!
346AS_IF([test "$make_cv_load" = yes], [
347 AC_MSG_CHECKING([If the linker accepts -Wl,--export-dynamic])
348 old_LDFLAGS="$LDFLAGS"
349 LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
350 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
351 [AC_MSG_RESULT([yes])
352 AC_SUBST([AM_LDFLAGS], [-Wl,--export-dynamic])],
353 [AC_MSG_RESULT([no])
354 AC_MSG_CHECKING([If the linker accepts -rdynamic])
355 LDFLAGS="$old_LDFLAGS -rdynamic"
356 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
357 [AC_MSG_RESULT([yes])
358 AC_SUBST([AM_LDFLAGS], [-rdynamic])],
359 [AC_MSG_RESULT([no])])
360 ])
361 LDFLAGS="$old_LDFLAGS"
362])
363
364# if we have both lstat() and readlink() then we can support symlink
365# timechecks.
366AS_IF([test "$ac_cv_func_lstat" = yes && test "$ac_cv_func_readlink" = yes],
367 [ AC_DEFINE([MAKE_SYMLINKS], [1],
368 [Define to 1 to enable symbolic link timestamp checking.])
369])
370
371# Find the SCCS commands, so we can include them in our default rules.
372
373AC_CACHE_CHECK([for location of SCCS get command], [make_cv_path_sccs_get], [
374 AS_IF([test -f /usr/sccs/get],
375 [make_cv_path_sccs_get=/usr/sccs/get],
376 [make_cv_path_sccs_get=get])
377])
378AC_DEFINE_UNQUOTED([SCCS_GET], ["$make_cv_path_sccs_get"],
379 [Define to the name of the SCCS 'get' command.])
380
381ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
382AS_IF([(/usr/sccs/admin -n s.conftest || admin -n s.conftest) >/dev/null 2>&1 &&
383 test -f s.conftest],
384[ # We successfully created an SCCS file.
385 AC_CACHE_CHECK([if SCCS get command understands -G], [make_cv_sys_get_minus_G],
386 [AS_IF([$make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
387 test -f conftoast],
388 [make_cv_sys_get_minus_G=yes],
389 [make_cv_sys_get_minus_G=no])
390 ])
391 AS_IF([test "$make_cv_sys_get_minus_G" = yes],
392 [AC_DEFINE([SCCS_GET_MINUS_G], [1],
393 [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.])
394 ])
395])
396rm -f s.conftest conftoast
397
398## bird: always use our glob impl. Avoids trouble with newish glibc.
399# Check the system to see if it provides GNU glob. If not, use our
400# local version.
401#x# AC_CACHE_CHECK([if system libc has GNU glob], [make_cv_sys_gnu_glob],
402#x# [ AC_EGREP_CPP([gnu glob],[
403#x# #include <features.h>
404#x# #include <glob.h>
405#x# #include <fnmatch.h>
406#x#
407#x# #define GLOB_INTERFACE_VERSION 1
408#x# #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
409#x# # include <gnu-versions.h>
410#x# # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
411#x# gnu glob
412#x# # endif
413#x# #endif],
414#x# [make_cv_sys_gnu_glob=yes],
415#x# [make_cv_sys_gnu_glob=no])])
416#x# AS_IF([test "$make_cv_sys_gnu_glob" = no],
417AS_IF([test yes = yes],
418[ GLOBINC='-I$(srcdir)/glob'
419 GLOBLIB=glob/libglob.a
420 make_cv_sys_gnu_glob=no
421])
422AC_SUBST([GLOBINC])
423AC_SUBST([GLOBLIB])
424
425# Tell automake about this, so it can build the right .c files.
426AM_CONDITIONAL([USE_LOCAL_GLOB], [test "$make_cv_sys_gnu_glob" = no])
427
428# Let the makefile know what our build host is
429
430AC_DEFINE_UNQUOTED([MAKE_HOST],["$host"],[Build host information.])
431MAKE_HOST="$host"
432AC_SUBST([MAKE_HOST])
433
434w32_target_env=no
435AM_CONDITIONAL([WINDOWSENV], [false])
436
437AS_CASE([$host],
438 [*-*-mingw32],
439 [AM_CONDITIONAL([WINDOWSENV], [true])
440 w32_target_env=yes
441 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
442 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
443 ])
444
445AC_DEFINE_UNQUOTED([PATH_SEPARATOR_CHAR],['$PATH_SEPARATOR'],
446 [Define to the character that separates directories in PATH.])
447
448# Include the Maintainer's Makefile section, if it's here.
449
450MAINT_MAKEFILE=/dev/null
451AS_IF([test -r "$srcdir/maintMakefile"],
452[ MAINT_MAKEFILE="$srcdir/maintMakefile"
453])
454AC_SUBST_FILE([MAINT_MAKEFILE])
455
456# Allow building with dmalloc
457AM_WITH_DMALLOC
458
459# Forcibly disable SET_MAKE. If it's set it breaks things like the test
460# scripts, etc.
461SET_MAKE=
462
463# Sanity check and inform the user of what we found
464
465AS_IF([test "x$make_badcust" = xyes], [
466echo
467echo "WARNING: --with-customs specified but no customs.h could be found;"
468echo " disabling Customs support."
469echo
470])
471
472AS_CASE([$with_customs],
473[""|n|no|y|ye|yes], [:],
474[AS_IF([test -f "$with_customs/lib/libcustoms.a"], [:],
475[ echo
476 echo "WARNING: '$with_customs/lib' does not appear to contain the"
477 echo " Customs library. You must build and install Customs"
478 echo " before compiling GNU make."
479 echo
480])])
481
482AS_IF([test "x$has_wait_nohang" = xno],
483[ echo
484 echo "WARNING: Your system has neither waitpid() nor wait3()."
485 echo " Without one of these, signal handling is unreliable."
486 echo " You should be aware that running GNU make with -j"
487 echo " could result in erratic behavior."
488 echo
489])
490
491AS_IF([test "x$make_cv_job_server" = xno && test "x$user_job_server" = xyes],
492[ echo
493 echo "WARNING: Make job server requires a POSIX-ish system that"
494 echo " supports the pipe(), sigaction(), and either"
495 echo " waitpid() or wait3() functions. Your system doesn't"
496 echo " appear to provide one or more of those."
497 echo " Disabling job server support."
498 echo
499])
500
501AS_IF([test "x$make_cv_load" = xno && test "x$user_load" = xyes],
502[ echo
503 echo "WARNING: 'load' support requires a POSIX-ish system that"
504 echo " supports the dlopen(), dlsym(), and dlerror() functions."
505 echo " Your system doesn't appear to provide one or more of these."
506 echo " Disabling 'load' support."
507 echo
508])
509
510# Specify what files are to be created.
511# bird: Removed po/Makefile.in.
512#AC_CONFIG_FILES([Makefile glob/Makefile po/Makefile.in config/Makefile \
513# doc/Makefile w32/Makefile tests/config-flags.pm])
514AC_CONFIG_FILES([Makefile glob/Makefile config/Makefile \
515 doc/Makefile w32/Makefile tests/config-flags.pm])
516
517# OK, do it!
518
519AC_OUTPUT
520
521# We only generate the build.sh if we have a build.sh.in; we won't have
522# one before we've created a distribution.
523AS_IF([test -f "$srcdir/build.sh.in"],
524[ ./config.status --file build.sh
525 chmod +x build.sh
526])
527
528dnl Local Variables:
529dnl comment-start: "dnl "
530dnl comment-end: ""
531dnl comment-start-skip: "\\bdnl\\b\\s *"
532dnl compile-command: "make configure config.h.in"
533dnl End:
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