1 # Process this file with autoconf to produce a configure script.
3 # Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
4 # 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
5 # This file is part of GNU Make.
7 # GNU Make is free software; you can redistribute it and/or modify it under the
8 # terms of the GNU General Public License as published by the Free Software
9 # Foundation; either version 2, or (at your option) any later version.
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 FOR
13 # A PARTICULAR PURPOSE. See the GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License along with
16 # GNU Make; see the file COPYING. If not, write to the Free Software
17 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 AC_INIT([GNU make],[3.81],[bug-make@gnu.org])
22 AC_REVISION([[$Id: configure.in,v 1.142 2006/04/01 06:36:40 psmith Exp $]])
25 AC_CONFIG_AUX_DIR(config)
26 AC_CONFIG_SRCDIR(vpath.c)
27 AC_CONFIG_HEADERS(config.h)
30 AM_INIT_AUTOMAKE([1.9])
32 # Checks for programs.
37 AC_CHECK_PROG(AR, ar, ar, ar)
38 # Perl is needed for the test suite (only)
39 AC_CHECK_PROG(PERL, perl, perl, perl)
41 # Specialized system macros
50 # Enable gettext, in "external" mode.
52 AM_GNU_GETTEXT_VERSION(0.14.1)
53 AM_GNU_GETTEXT([external])
55 # This test must come as early as possible after the compiler configuration
56 # tests, because the choice of the file model can (in principle) affect
57 # whether functions and headers are available, whether they work, etc.
60 # Checks for libraries.
61 AC_SEARCH_LIBS(getpwnam, [sun])
63 # Checks for header files.
68 AC_CHECK_HEADERS(stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
69 memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h)
71 # Set a flag if we have an ANSI C compiler
72 if test "$ac_cv_prog_cc_stdc" != no; then
73 AC_DEFINE(HAVE_ANSI_COMPILER, 1,
74 [Define if your compiler conforms to the ANSI C standard.])
78 # Determine what kind of variadic function calls we support
79 AC_CHECK_HEADERS(stdarg.h varargs.h, break)
87 # Find some definition for uintmax_t
89 AC_CHECK_TYPE(uintmax_t,,[
90 uintmax_t="unsigned long"
91 AC_CHECK_TYPE(unsigned long long,[uintmax_t="unsigned long long"])
92 AC_DEFINE_UNQUOTED(uintmax_t,$uintmax_t,
93 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])])
95 # Find out whether our struct stat returns nanosecond resolution timestamps.
97 AC_STRUCT_ST_MTIM_NSEC
98 AC_MSG_CHECKING([whether to use high resolution file timestamps])
99 AC_CACHE_VAL(make_cv_file_timestamp_hi_res, [
100 make_cv_file_timestamp_hi_res=no
101 if test "$ac_cv_struct_st_mtim_nsec" != no; then
102 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
104 # include <inttypes.h>
106 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
107 [make_cv_file_timestamp_hi_res=yes],
110 AC_MSG_RESULT($make_cv_file_timestamp_hi_res)
111 if test "$make_cv_file_timestamp_hi_res" = yes; then
116 AC_DEFINE_UNQUOTED(FILE_TIMESTAMP_HI_RES, $val,
117 [Use high resolution file timestamps if nonzero.])
119 if test "$make_cv_file_timestamp_hi_res" = yes; then
120 # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
121 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
122 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
123 if test "$ac_cv_search_clock_gettime" != no; then
124 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
125 [Define if you have the clock_gettime function.])
129 # Check for DOS-style pathnames.
132 # See if we have a standard version of gettimeofday(). Since actual
133 # implementations can differ, just make sure we have the most common
135 AC_CACHE_CHECK([for standard gettimeofday], ac_cv_func_gettimeofday,
136 [ac_cv_func_gettimeofday=no
137 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
140 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
141 exit (gettimeofday (&t, 0) != 0
142 || t.tv_sec < 0 || t.tv_usec < 0);
144 [ac_cv_func_gettimeofday=yes],
145 [ac_cv_func_gettimeofday=no],
146 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
147 if test "$ac_cv_func_gettimeofday" = yes; then
148 AC_DEFINE(HAVE_GETTIMEOFDAY, 1,
149 [Define if you have a standard gettimeofday function])
152 AC_CHECK_FUNCS( memcpy memmove strchr strdup mkstemp mktemp fdopen \
153 bsd_signal dup2 getcwd realpath sigsetmask sigaction \
154 getgroups seteuid setegid setlinebuf setreuid setregid \
155 getrlimit setrlimit setvbuf pipe strerror strsignal \
156 lstat readlink atexit)
158 AC_FUNC_SETVBUF_REVERSED
160 # strcoll() is used by the GNU glob library
166 AC_FUNC_CLOSEDIR_VOID
170 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
171 # doesn't. So, we will.
173 if test "$ac_cv_header_nlist_h" = yes; then
174 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
176 nl.n_name = "string";
178 [make_cv_nlist_struct=yes],
179 [make_cv_nlist_struct=no])
180 if test "$make_cv_nlist_struct" = yes; then
181 AC_DEFINE(NLIST_STRUCT, 1,
182 [Define if struct nlist.n_name is a pointer rather than an array.])
186 AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
189 /* NetBSD declares sys_siglist in unistd.h. */
196 # Check out the wait reality.
197 AC_CHECK_HEADERS(sys/wait.h)
198 AC_CHECK_FUNCS(waitpid wait3)
199 AC_MSG_CHECKING(for union wait)
200 AC_CACHE_VAL(make_cv_union_wait, [dnl
201 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
202 #include <sys/wait.h>]],
203 [[union wait status; int pid; pid = wait (&status);
205 /* Some POSIXoid systems have both the new-style macros and the old
206 union wait type, and they do not work together. If union wait
207 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
208 if (WEXITSTATUS (status) != 0) pid = -1;
210 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
211 -- blow chunks here --
215 /* Make sure union wait works with waitpid. */
216 pid = waitpid (-1, &status, 0);
219 [make_cv_union_wait=yes],
220 [make_cv_union_wait=no])])
221 if test "$make_cv_union_wait" = yes; then
222 AC_DEFINE(HAVE_UNION_WAIT, 1,
223 [Define this if you have the \`union wait' type in <sys/wait.h>.])
225 AC_MSG_RESULT($make_cv_union_wait)
228 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
229 if test "$PATH_SEPARATOR" = ';'; then
230 AC_DEFINE(HAVE_DOS_PATHS, 1,
231 [Define this if your system requires backslashes or drive specs in pathnames.])
235 # See if the user wants to use pmake's "customs" distributed build capability
237 AC_SUBST(REMOTE) REMOTE=stub
240 AC_HELP_STRING([--with-customs=DIR],
241 [enable remote jobs via Customs--see README.customs]),
244 *) make_cppflags="$CPPFLAGS"
247 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
248 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
251 AC_CHECK_HEADER(customs.h,
254 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
256 CPPFLAGS="$make_cppflags" make_badcust=yes])
259 # Tell automake about this, so it can include the right .c files.
260 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
262 # See if the user asked to handle case insensitive file systems.
264 AH_TEMPLATE(HAVE_CASE_INSENSITIVE_FS, [Use case insensitive file names])
265 AC_ARG_ENABLE(case-insensitive-file-system,
266 AC_HELP_STRING([--enable-case-insensitive-file-system],
267 [enable case insensitive file system support]),
268 case_insensitive_fs="yes" AC_DEFINE(HAVE_CASE_INSENSITIVE_FS),
269 case_insensitive_fs="no")
271 # See if we can handle the job server feature, and if the user wants it.
273 AC_ARG_ENABLE(job-server,
274 AC_HELP_STRING([--disable-job-server],
275 [disallow recursive make communication during -jN]),
276 [make_cv_job_server="$enableval" user_job_server="$enableval"],
277 [make_cv_job_server="yes"])
280 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
281 no/no) has_wait_nohang=no ;;
284 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
285 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
286 [[return SA_RESTART;]])],
287 [make_cv_sa_restart=yes],
288 [make_cv_sa_restart=no])])
290 if test "$make_cv_sa_restart" != no; then
291 AC_DEFINE(HAVE_SA_RESTART, 1,
292 [Define if <signal.h> defines the SA_RESTART constant.])
295 # enable make_cv_sa_restart for OS/2 so that the jobserver will be enabled,
296 # but do it after HAVE_SA_RESTART has been defined.
298 os2*) make_cv_sa_restart=yes ;;
301 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
303 AC_DEFINE(MAKE_JOBSERVER, 1,
304 [Define this to enable job server support in GNU make.]);;
307 # if we have both lstat() and readlink() then we can support symlink
309 case "$ac_cv_func_lstat/$ac_cv_func_readlink" in
311 AC_DEFINE(MAKE_SYMLINKS, 1,
312 [Define this to enable symbolic link timestamp checking.]);;
315 # Find the SCCS commands, so we can include them in our default rules.
317 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
318 if test -f /usr/sccs/get; then
319 make_cv_path_sccs_get=/usr/sccs/get
321 make_cv_path_sccs_get=get
323 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
324 [Define to the name of the SCCS 'get' command.])
326 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
327 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
328 test -f s.conftest; then
329 # We successfully created an SCCS file.
330 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
331 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
332 test -f conftoast; then
333 make_cv_sys_get_minus_G=yes
335 make_cv_sys_get_minus_G=no
337 case "$make_cv_sys_get_minus_G" in
338 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
339 [Define this if the SCCS 'get' command understands the '-G<file>' option.]);;
342 rm -f s.conftest conftoast
344 # Check the system to see if it provides GNU glob. If not, use our
347 AC_MSG_CHECKING(if system libc has GNU glob)
348 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
349 AC_EGREP_CPP(gnu glob,[
350 #include <features.h>
354 #define GLOB_INTERFACE_VERSION 1
355 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
356 # include <gnu-versions.h>
357 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
361 ], [AC_MSG_RESULT(yes)
362 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
363 AC_SUBST(GLOBINC) GLOBINC='-I$(srcdir)/glob'
364 AC_SUBST(GLOBLIB) GLOBLIB=glob/libglob.a
365 make_cv_sys_gnu_glob=no])])
366 # Tell automake about this, so it can build the right .c files.
367 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
369 # Let the makefile know what our build host is
371 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
376 AM_CONDITIONAL([WINDOWSENV], false)
380 AM_CONDITIONAL(WINDOWSENV, true)
382 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
383 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
387 # Include the Maintainer's Makefile section, if it's here.
389 MAINT_MAKEFILE=/dev/null
390 if test -r "$srcdir/maintMakefile"; then
391 MAINT_MAKEFILE="$srcdir/maintMakefile"
393 AC_SUBST_FILE(MAINT_MAKEFILE)
395 # Allow building with dmalloc
398 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
402 # Sanity check and inform the user of what we found
404 case "$make_badcust" in
406 echo "WARNING: --with-customs specified but no customs.h could be found;"
407 echo " disabling Customs support."
411 case "$with_customs" in
413 *) if test -f "$with_customs/lib/libcustoms.a"; then
417 echo "WARNING: '$with_customs/lib' does not appear to contain the"
418 echo " Customs library. You must build and install Customs"
419 echo " before compiling GNU make."
424 case "$has_wait_nohang" in
426 echo "WARNING: Your system has neither waitpid() nor wait3()."
427 echo " Without one of these, signal handling is unreliable."
428 echo " You should be aware that running GNU make with -j"
429 echo " could result in erratic behavior."
433 case "$make_cv_job_server/$user_job_server" in
435 echo "WARNING: Make job server requires a POSIX-ish system that"
436 echo " supports the pipe(), sigaction(), and either"
437 echo " waitpid() or wait3() functions. Your system doesn't"
438 echo " appear to provide one or more of those."
439 echo " Disabling job server support."
444 # Specify what files are to be created.
445 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile w32/Makefile)
451 # We only generate the build.sh if we have a build.sh.in; we won't have
452 # one before we've created a distribution.
453 if test -f "$srcdir/build.sh.in"; then
454 ./config.status --file build.sh
459 dnl comment-start: "dnl "
461 dnl comment-start-skip: "\\bdnl\\b\\s *"
462 dnl compile-command: "make configure config.h.in"