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],[3.81.90],[bug-make@gnu.org])
22 AC_REVISION([[$Id: configure.in,v 1.145 2006/10/01 05:38:38 psmith Exp $]])
25 AC_CONFIG_AUX_DIR(config)
26 AC_CONFIG_SRCDIR(vpath.c)
27 AC_CONFIG_HEADERS(config.h)
30 AM_INIT_AUTOMAKE([1.9])
32 # Checks for programs.
37 AC_CHECK_PROG(AR, ar, ar, ar)
38 # Perl is needed for the test suite (only)
39 AC_CHECK_PROG(PERL, perl, perl, perl)
41 # Specialized system macros
47 # Enable gettext, in "external" mode.
49 AM_GNU_GETTEXT_VERSION(0.14.1)
50 AM_GNU_GETTEXT([external])
52 # This test must come as early as possible after the compiler configuration
53 # tests, because the choice of the file model can (in principle) affect
54 # whether functions and headers are available, whether they work, etc.
57 # Checks for libraries.
58 AC_SEARCH_LIBS(getpwnam, [sun])
60 # Checks for header files.
65 AC_CHECK_HEADERS(stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
66 memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h)
68 # Set a flag if we have an ANSI C compiler
69 if test "$ac_cv_prog_cc_stdc" != no; then
70 AC_DEFINE(HAVE_ANSI_COMPILER, 1,
71 [Define if your compiler conforms to the ANSI C standard.])
75 # Determine what kind of variadic function calls we support
76 AC_CHECK_HEADERS(stdarg.h varargs.h, break)
84 # Find some definition for uintmax_t
86 AC_CHECK_TYPE(uintmax_t,,[
87 uintmax_t="unsigned long"
88 AC_CHECK_TYPE(unsigned long long,[uintmax_t="unsigned long long"])
89 AC_DEFINE_UNQUOTED(uintmax_t,$uintmax_t,
90 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])])
92 # Find out whether our struct stat returns nanosecond resolution timestamps.
94 AC_STRUCT_ST_MTIM_NSEC
95 AC_MSG_CHECKING([whether to use high resolution file timestamps])
96 AC_CACHE_VAL(make_cv_file_timestamp_hi_res, [
97 make_cv_file_timestamp_hi_res=no
98 if test "$ac_cv_struct_st_mtim_nsec" != no; then
99 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
101 # include <inttypes.h>
103 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
104 [make_cv_file_timestamp_hi_res=yes],
107 AC_MSG_RESULT($make_cv_file_timestamp_hi_res)
108 if test "$make_cv_file_timestamp_hi_res" = yes; then
113 AC_DEFINE_UNQUOTED(FILE_TIMESTAMP_HI_RES, $val,
114 [Use high resolution file timestamps if nonzero.])
116 if test "$make_cv_file_timestamp_hi_res" = yes; then
117 # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
118 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
119 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
120 if test "$ac_cv_search_clock_gettime" != no; then
121 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
122 [Define if you have the clock_gettime function.])
126 # Check for DOS-style pathnames.
129 # See if we have a standard version of gettimeofday(). Since actual
130 # implementations can differ, just make sure we have the most common
132 AC_CACHE_CHECK([for standard gettimeofday], ac_cv_func_gettimeofday,
133 [ac_cv_func_gettimeofday=no
134 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
137 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
138 exit (gettimeofday (&t, 0) != 0
139 || t.tv_sec < 0 || t.tv_usec < 0);
141 [ac_cv_func_gettimeofday=yes],
142 [ac_cv_func_gettimeofday=no],
143 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
144 if test "$ac_cv_func_gettimeofday" = yes; then
145 AC_DEFINE(HAVE_GETTIMEOFDAY, 1,
146 [Define if you have a standard gettimeofday function])
149 AC_CHECK_FUNCS( strdup mkstemp mktemp fdopen \
150 bsd_signal dup2 getcwd realpath sigsetmask sigaction \
151 getgroups seteuid setegid setlinebuf setreuid setregid \
152 getrlimit setrlimit setvbuf pipe strerror strsignal \
153 lstat readlink atexit)
155 AC_FUNC_SETVBUF_REVERSED
157 # strcoll() is used by the GNU glob library
163 AC_FUNC_CLOSEDIR_VOID
167 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
168 # doesn't. So, we will.
170 if test "$ac_cv_header_nlist_h" = yes; then
171 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
173 nl.n_name = "string";
175 [make_cv_nlist_struct=yes],
176 [make_cv_nlist_struct=no])
177 if test "$make_cv_nlist_struct" = yes; then
178 AC_DEFINE(NLIST_STRUCT, 1,
179 [Define if struct nlist.n_name is a pointer rather than an array.])
183 AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
186 /* NetBSD declares sys_siglist in unistd.h. */
193 # Check out the wait reality.
194 AC_CHECK_HEADERS(sys/wait.h,,,[[#include <sys/types.h>]])
195 AC_CHECK_FUNCS(waitpid wait3)
196 AC_MSG_CHECKING(for union wait)
197 AC_CACHE_VAL(make_cv_union_wait, [dnl
198 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
199 #include <sys/wait.h>]],
200 [[union wait status; int pid; pid = wait (&status);
202 /* Some POSIXoid systems have both the new-style macros and the old
203 union wait type, and they do not work together. If union wait
204 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
205 if (WEXITSTATUS (status) != 0) pid = -1;
207 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
208 -- blow chunks here --
212 /* Make sure union wait works with waitpid. */
213 pid = waitpid (-1, &status, 0);
216 [make_cv_union_wait=yes],
217 [make_cv_union_wait=no])])
218 if test "$make_cv_union_wait" = yes; then
219 AC_DEFINE(HAVE_UNION_WAIT, 1,
220 [Define this if you have the \`union wait' type in <sys/wait.h>.])
222 AC_MSG_RESULT($make_cv_union_wait)
225 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
226 if test "$PATH_SEPARATOR" = ';'; then
227 AC_DEFINE(HAVE_DOS_PATHS, 1,
228 [Define this if your system requires backslashes or drive specs in pathnames.])
232 # See if the user wants to use pmake's "customs" distributed build capability
234 AC_SUBST(REMOTE) REMOTE=stub
237 AC_HELP_STRING([--with-customs=DIR],
238 [enable remote jobs via Customs--see README.customs]),
241 *) make_cppflags="$CPPFLAGS"
244 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
245 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
248 AC_CHECK_HEADER(customs.h,
251 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
253 CPPFLAGS="$make_cppflags" make_badcust=yes])
256 # Tell automake about this, so it can include the right .c files.
257 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
259 # See if the user asked to handle case insensitive file systems.
261 AH_TEMPLATE(HAVE_CASE_INSENSITIVE_FS, [Use case insensitive file names])
262 AC_ARG_ENABLE(case-insensitive-file-system,
263 AC_HELP_STRING([--enable-case-insensitive-file-system],
264 [enable case insensitive file system support]),
265 case_insensitive_fs="yes" AC_DEFINE(HAVE_CASE_INSENSITIVE_FS),
266 case_insensitive_fs="no")
268 # See if we can handle the job server feature, and if the user wants it.
270 AC_ARG_ENABLE(job-server,
271 AC_HELP_STRING([--disable-job-server],
272 [disallow recursive make communication during -jN]),
273 [make_cv_job_server="$enableval" user_job_server="$enableval"],
274 [make_cv_job_server="yes"])
277 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
278 no/no) has_wait_nohang=no ;;
281 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
282 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
283 [[return SA_RESTART;]])],
284 [make_cv_sa_restart=yes],
285 [make_cv_sa_restart=no])])
287 if test "$make_cv_sa_restart" != no; then
288 AC_DEFINE(HAVE_SA_RESTART, 1,
289 [Define if <signal.h> defines the SA_RESTART constant.])
292 # enable make_cv_sa_restart for OS/2 so that the jobserver will be enabled,
293 # but do it after HAVE_SA_RESTART has been defined.
295 os2*) make_cv_sa_restart=yes ;;
298 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
300 AC_DEFINE(MAKE_JOBSERVER, 1,
301 [Define this to enable job server support in GNU make.]);;
304 # if we have both lstat() and readlink() then we can support symlink
306 case "$ac_cv_func_lstat/$ac_cv_func_readlink" in
308 AC_DEFINE(MAKE_SYMLINKS, 1,
309 [Define this to enable symbolic link timestamp checking.]);;
312 # Find the SCCS commands, so we can include them in our default rules.
314 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
315 if test -f /usr/sccs/get; then
316 make_cv_path_sccs_get=/usr/sccs/get
318 make_cv_path_sccs_get=get
320 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
321 [Define to the name of the SCCS 'get' command.])
323 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
324 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
325 test -f s.conftest; then
326 # We successfully created an SCCS file.
327 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
328 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
329 test -f conftoast; then
330 make_cv_sys_get_minus_G=yes
332 make_cv_sys_get_minus_G=no
334 case "$make_cv_sys_get_minus_G" in
335 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
336 [Define this if the SCCS 'get' command understands the '-G<file>' option.]);;
339 rm -f s.conftest conftoast
341 # Check the system to see if it provides GNU glob. If not, use our
344 AC_MSG_CHECKING(if system libc has GNU glob)
345 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
346 AC_EGREP_CPP(gnu glob,[
347 #include <features.h>
351 #define GLOB_INTERFACE_VERSION 1
352 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
353 # include <gnu-versions.h>
354 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
358 ], [AC_MSG_RESULT(yes)
359 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
360 AC_SUBST(GLOBINC) GLOBINC='-I$(srcdir)/glob'
361 AC_SUBST(GLOBLIB) GLOBLIB=glob/libglob.a
362 make_cv_sys_gnu_glob=no])])
363 # Tell automake about this, so it can build the right .c files.
364 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
366 # Let the makefile know what our build host is
368 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
373 AM_CONDITIONAL([WINDOWSENV], false)
377 AM_CONDITIONAL(WINDOWSENV, true)
379 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
380 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
384 AC_DEFINE_UNQUOTED(PATH_SEPARATOR_CHAR,'$PATH_SEPARATOR',[Define to the character that separates directories in PATH.])
386 # Include the Maintainer's Makefile section, if it's here.
388 MAINT_MAKEFILE=/dev/null
389 if test -r "$srcdir/maintMakefile"; then
390 MAINT_MAKEFILE="$srcdir/maintMakefile"
392 AC_SUBST_FILE(MAINT_MAKEFILE)
394 # Allow building with dmalloc
397 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
401 # Sanity check and inform the user of what we found
403 case "$make_badcust" in
405 echo "WARNING: --with-customs specified but no customs.h could be found;"
406 echo " disabling Customs support."
410 case "$with_customs" in
412 *) if test -f "$with_customs/lib/libcustoms.a"; then
416 echo "WARNING: '$with_customs/lib' does not appear to contain the"
417 echo " Customs library. You must build and install Customs"
418 echo " before compiling GNU make."
423 case "$has_wait_nohang" in
425 echo "WARNING: Your system has neither waitpid() nor wait3()."
426 echo " Without one of these, signal handling is unreliable."
427 echo " You should be aware that running GNU make with -j"
428 echo " could result in erratic behavior."
432 case "$make_cv_job_server/$user_job_server" in
434 echo "WARNING: Make job server requires a POSIX-ish system that"
435 echo " supports the pipe(), sigaction(), and either"
436 echo " waitpid() or wait3() functions. Your system doesn't"
437 echo " appear to provide one or more of those."
438 echo " Disabling job server support."
443 # Specify what files are to be created.
444 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile w32/Makefile)
450 # We only generate the build.sh if we have a build.sh.in; we won't have
451 # one before we've created a distribution.
452 if test -f "$srcdir/build.sh.in"; then
453 ./config.status --file build.sh
458 dnl comment-start: "dnl "
460 dnl comment-start-skip: "\\bdnl\\b\\s *"
461 dnl compile-command: "make configure config.h.in"