1 # Process this file with autoconf to produce a configure script.
3 # Copyright (C) 1993-2013 Free Software Foundation, Inc.
4 # This file is part of GNU Make.
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
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
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/>.
19 AC_INIT([GNU make],[4.0],[bug-make@gnu.org])
24 AC_CONFIG_AUX_DIR([config])
25 AC_CONFIG_SRCDIR([vpath.c])
26 AC_CONFIG_HEADERS([config.h])
29 AM_INIT_AUTOMAKE([1.11.1 silent-rules])
31 # Checks for programs.
36 AC_CHECK_PROG([AR], [ar], [ar], [ar])
37 # Perl is needed for the test suite (only)
38 AC_CHECK_PROG([PERL], [perl], [perl], [perl])
40 # Specialized system macros
46 # Enable gettext, in "external" mode.
48 AM_GNU_GETTEXT_VERSION([0.18.1])
49 AM_GNU_GETTEXT([external])
51 # This test must come as early as possible after the compiler configuration
52 # tests, because the choice of the file model can (in principle) affect
53 # whether functions and headers are available, whether they work, etc.
56 # Checks for libraries.
57 AC_SEARCH_LIBS([getpwnam], [sun])
59 # Checks for header files.
64 AC_CHECK_HEADERS([stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
65 memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h])
73 # Find some definition for uintmax_t
75 AC_CHECK_TYPE([uintmax_t],[],
76 [ uintmax_t="unsigned long"
77 AC_CHECK_TYPE([unsigned long long],[uintmax_t="unsigned long long"])
78 AC_DEFINE_UNQUOTED([uintmax_t], [$uintmax_t],
79 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])
82 # Find out whether our struct stat returns nanosecond resolution timestamps.
84 AC_STRUCT_ST_MTIM_NSEC
85 AC_CACHE_CHECK([whether to use high resolution file timestamps],
86 [make_cv_file_timestamp_hi_res],
87 [ make_cv_file_timestamp_hi_res=no
88 AS_IF([test "$ac_cv_struct_st_mtim_nsec" != no],
89 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
91 # include <inttypes.h>
93 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
94 [make_cv_file_timestamp_hi_res=yes])
96 AS_IF([test "$make_cv_file_timestamp_hi_res" = yes], [val=1], [val=0])
97 AC_DEFINE_UNQUOTED([FILE_TIMESTAMP_HI_RES], [$val],
98 [Use high resolution file timestamps if nonzero.])
100 AS_IF([test "$make_cv_file_timestamp_hi_res" = yes],
101 [ # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
102 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
103 AC_SEARCH_LIBS([clock_gettime], [rt posix4])
104 AS_IF([test "$ac_cv_search_clock_gettime" != no],
105 [ AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
106 [Define to 1 if you have the clock_gettime function.])
110 # Check for DOS-style pathnames.
113 # See if we have a standard version of gettimeofday(). Since actual
114 # implementations can differ, just make sure we have the most common
116 AC_CACHE_CHECK([for standard gettimeofday], [ac_cv_func_gettimeofday],
117 [ac_cv_func_gettimeofday=no
118 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
121 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
122 exit (gettimeofday (&t, 0) != 0
123 || t.tv_sec < 0 || t.tv_usec < 0);
125 [ac_cv_func_gettimeofday=yes],
126 [ac_cv_func_gettimeofday=no],
127 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
128 AS_IF([test "$ac_cv_func_gettimeofday" = yes],
129 [ AC_DEFINE([HAVE_GETTIMEOFDAY], [1],
130 [Define to 1 if you have a standard gettimeofday function])
133 AC_CHECK_FUNCS([strdup strndup mkstemp mktemp fdopen fileno \
134 dup dup2 getcwd realpath sigsetmask sigaction \
135 getgroups seteuid setegid setlinebuf setreuid setregid \
136 getrlimit setrlimit setvbuf pipe strerror strsignal \
137 lstat readlink atexit])
139 # We need to check declarations, not just existence, because on Tru64 this
140 # function is not declared without special flags, which themselves cause
141 # other problems. We'll just use our own.
142 AC_CHECK_DECLS([bsd_signal], [], [], [[#define _GNU_SOURCE 1
143 #include <signal.h>]])
145 AC_FUNC_SETVBUF_REVERSED
147 # Rumor has it that strcasecmp lives in -lresolv on some odd systems.
148 # It doesn't hurt much to use our own if we can't find it so I don't
149 # make the effort here.
150 AC_CHECK_FUNCS([strcasecmp strncasecmp strcmpi strncmpi stricmp strnicmp])
152 # strcoll() is used by the GNU glob library
156 AC_FUNC_CLOSEDIR_VOID
158 # See if the user wants to add (or not) GNU Guile support
160 AC_ARG_WITH([guile], [AS_HELP_STRING([--with-guile],
161 [Support GNU Guile for embedded scripting])])
163 # For some strange reason, at least on Ubuntu, each version of Guile
164 # comes with it's own PC file so we have to specify them as individual
166 AS_IF([test "x$with_guile" != xno],
167 [ PKG_CHECK_MODULES([GUILE], [guile-2.0], [have_guile=yes],
168 [PKG_CHECK_MODULES([GUILE], [guile-1.8], [have_guile=yes],
172 AS_IF([test "$have_guile" = yes],
173 [AC_DEFINE([HAVE_GUILE], [1], [Embed GNU Guile support])])
175 AM_CONDITIONAL([HAVE_GUILE], [test "$have_guile" = yes])
179 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
180 # doesn't. So, we will.
182 AS_IF([test "$ac_cv_header_nlist_h" = yes],
183 [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
185 nl.n_name = "string";
187 [make_cv_nlist_struct=yes],
188 [make_cv_nlist_struct=no])
189 AS_IF([test "$make_cv_nlist_struct" = yes],
190 [ AC_DEFINE([NLIST_STRUCT], [1],
191 [Define to 1 if struct nlist.n_name is a pointer rather than an array.])
195 AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
198 /* NetBSD declares sys_siglist in unistd.h. */
205 # Check out the wait reality.
206 AC_CHECK_HEADERS([sys/wait.h],[],[],[[#include <sys/types.h>]])
207 AC_CHECK_FUNCS([waitpid wait3])
208 AC_CACHE_CHECK([for union wait], [make_cv_union_wait],
209 [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
210 #include <sys/wait.h>]],
211 [[union wait status; int pid; pid = wait (&status);
213 /* Some POSIXoid systems have both the new-style macros and the old
214 union wait type, and they do not work together. If union wait
215 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
216 if (WEXITSTATUS (status) != 0) pid = -1;
218 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
219 -- blow chunks here --
223 /* Make sure union wait works with waitpid. */
224 pid = waitpid (-1, &status, 0);
227 [make_cv_union_wait=yes],
228 [make_cv_union_wait=no])
230 AS_IF([test "$make_cv_union_wait" = yes],
231 [ AC_DEFINE([HAVE_UNION_WAIT], [1],
232 [Define to 1 if you have the 'union wait' type in <sys/wait.h>.])
236 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
237 AS_IF([test "$PATH_SEPARATOR" = ';'],
238 [ AC_DEFINE([HAVE_DOS_PATHS], [1],
239 [Define to 1 if your system requires backslashes or drive specs in pathnames.])
242 # See if the user wants to use pmake's "customs" distributed build capability
243 AC_SUBST([REMOTE]) REMOTE=stub
245 AC_ARG_WITH([customs],
246 [ AC_HELP_STRING([--with-customs=DIR],
247 [enable remote jobs via Customs--see README.customs])],
248 [ AS_CASE([$withval], [n|no], [:],
249 [make_cppflags="$CPPFLAGS"
252 [CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
253 make_ldflags="$LDFLAGS -L$with_customs/lib"])
255 AC_CHECK_HEADER([customs.h],
258 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
260 CPPFLAGS="$make_cppflags" make_badcust=yes])
264 # Tell automake about this, so it can include the right .c files.
265 AM_CONDITIONAL([USE_CUSTOMS], [test "$use_customs" = true])
267 # See if the user asked to handle case insensitive file systems.
268 AH_TEMPLATE([HAVE_CASE_INSENSITIVE_FS], [Use case insensitive file names])
269 AC_ARG_ENABLE([case-insensitive-file-system],
270 AC_HELP_STRING([--enable-case-insensitive-file-system],
271 [assume file systems are case insensitive]),
272 [AS_IF([test "$enableval" = yes], [AC_DEFINE([HAVE_CASE_INSENSITIVE_FS])])])
274 # See if we can handle the job server feature, and if the user wants it.
275 AC_ARG_ENABLE([job-server],
276 AC_HELP_STRING([--disable-job-server],
277 [disallow recursive make communication during -jN]),
278 [make_cv_job_server="$enableval" user_job_server="$enableval"],
279 [make_cv_job_server="yes"])
281 AS_IF([test "$ac_cv_func_waitpid" = no && test "$ac_cv_func_wait3" = no],
282 [has_wait_nohang=no],
283 [has_wait_nohang=yes])
285 AC_CACHE_CHECK([for SA_RESTART], [make_cv_sa_restart], [
286 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
287 [[return SA_RESTART;]])],
288 [make_cv_sa_restart=yes],
289 [make_cv_sa_restart=no])])
291 AS_IF([test "$make_cv_sa_restart" != no],
292 [ AC_DEFINE([HAVE_SA_RESTART], [1],
293 [Define to 1 if <signal.h> defines the SA_RESTART constant.])
296 # Only allow jobserver on systems that support it
297 AS_CASE([/$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/],
298 [*/no/*], [make_cv_job_server=no])
300 # Also supported on OS2 and MinGW
301 AS_CASE([$host_os], [os2*|mingw*], [make_cv_job_server=yes])
303 # If we support it and the user didn't disable it, build with jobserver
304 AS_CASE([/$make_cv_job_server/$user_job_server/],
305 [*/no/*], [: no jobserver],
306 [AC_DEFINE(MAKE_JOBSERVER, 1,
307 [Define to 1 to enable job server support in GNU make.])
310 # If dl*() functions are supported we can enable the load operation
311 AC_CHECK_DECLS([dlopen, dlsym, dlerror], [], [],
312 [[#include <dlfcn.h>]])
314 AC_ARG_ENABLE([load],
315 AC_HELP_STRING([--disable-load],
316 [disable support for the 'load' operation]),
317 [make_cv_load="$enableval" user_load="$enableval"],
318 [make_cv_load="yes"])
320 AS_CASE([/$ac_cv_func_dlopen/$ac_cv_func_dlsym/$ac_cv_func_dlerror/],
321 [*/no/*], [make_cv_load=no])
323 AS_CASE([/$make_cv_load/$user_load/],
324 [*/no/*], [make_cv_load=no],
325 [AC_DEFINE(MAKE_LOAD, 1,
326 [Define to 1 to enable 'load' support in GNU make.])
330 AS_IF([test "$make_cv_load" = yes], [
331 AC_SEARCH_LIBS([dlopen], [dl], [], [make_cv_load=])
334 # If we want load support, we might need to link with export-dynamic.
335 # See if we can figure it out. Unfortunately this is very difficult.
336 # For example passing -rdynamic to the SunPRO linker gives a warning
337 # but succeeds and creates a shared object, not an executable!
338 AS_IF([test "$make_cv_load" = yes], [
339 AC_MSG_CHECKING([If the linker accepts -Wl,--export-dynamic])
340 old_LDFLAGS="$LDFLAGS"
341 LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
342 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
343 [AC_MSG_RESULT([yes])
344 AC_SUBST([AM_LDFLAGS], [-Wl,--export-dynamic])],
346 AC_MSG_CHECKING([If the linker accepts -rdynamic])
347 LDFLAGS="$old_LDFLAGS -rdynamic"
348 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
349 [AC_MSG_RESULT([yes])
350 AC_SUBST([AM_LDFLAGS], [-rdynamic])],
351 [AC_MSG_RESULT([no])])
353 LDFLAGS="$old_LDFLAGS"
356 # if we have both lstat() and readlink() then we can support symlink
358 AS_IF([test "$ac_cv_func_lstat" = yes && test "$ac_cv_func_readlink" = yes],
359 [ AC_DEFINE([MAKE_SYMLINKS], [1],
360 [Define to 1 to enable symbolic link timestamp checking.])
363 # Find the SCCS commands, so we can include them in our default rules.
365 AC_CACHE_CHECK([for location of SCCS get command], [make_cv_path_sccs_get], [
366 AS_IF([test -f /usr/sccs/get],
367 [make_cv_path_sccs_get=/usr/sccs/get],
368 [make_cv_path_sccs_get=get])
370 AC_DEFINE_UNQUOTED([SCCS_GET], ["$make_cv_path_sccs_get"],
371 [Define to the name of the SCCS 'get' command.])
373 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
374 AS_IF([(/usr/sccs/admin -n s.conftest || admin -n s.conftest) >/dev/null 2>&1 &&
376 [ # We successfully created an SCCS file.
377 AC_CACHE_CHECK([if SCCS get command understands -G], [make_cv_sys_get_minus_G],
378 [AS_IF([$make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
380 [make_cv_sys_get_minus_G=yes],
381 [make_cv_sys_get_minus_G=no])
383 AS_IF([test "$make_cv_sys_get_minus_G" = yes],
384 [AC_DEFINE([SCCS_GET_MINUS_G], [1],
385 [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.])
388 rm -f s.conftest conftoast
390 # Check the system to see if it provides GNU glob. If not, use our
392 AC_CACHE_CHECK([if system libc has GNU glob], [make_cv_sys_gnu_glob],
393 [ AC_EGREP_CPP([gnu glob],[
394 #include <features.h>
398 #define GLOB_INTERFACE_VERSION 1
399 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
400 # include <gnu-versions.h>
401 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
405 [make_cv_sys_gnu_glob=yes],
406 [make_cv_sys_gnu_glob=no])])
407 AS_IF([test "$make_cv_sys_gnu_glob" = no],
408 [ GLOBINC='-I$(srcdir)/glob'
409 GLOBLIB=glob/libglob.a
414 # Tell automake about this, so it can build the right .c files.
415 AM_CONDITIONAL([USE_LOCAL_GLOB], [test "$make_cv_sys_gnu_glob" = no])
417 # Let the makefile know what our build host is
419 AC_DEFINE_UNQUOTED([MAKE_HOST],["$host"],[Build host information.])
421 AC_SUBST([MAKE_HOST])
424 AM_CONDITIONAL([WINDOWSENV], [false])
428 [AM_CONDITIONAL([WINDOWSENV], [true])
430 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
431 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
434 AC_DEFINE_UNQUOTED([PATH_SEPARATOR_CHAR],['$PATH_SEPARATOR'],
435 [Define to the character that separates directories in PATH.])
437 # Include the Maintainer's Makefile section, if it's here.
439 MAINT_MAKEFILE=/dev/null
440 AS_IF([test -r "$srcdir/maintMakefile"],
441 [ MAINT_MAKEFILE="$srcdir/maintMakefile"
443 AC_SUBST_FILE([MAINT_MAKEFILE])
445 # Allow building with dmalloc
448 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
452 # Sanity check and inform the user of what we found
454 AS_IF([test "x$make_badcust" = xyes], [
456 echo "WARNING: --with-customs specified but no customs.h could be found;"
457 echo " disabling Customs support."
461 AS_CASE([$with_customs],
462 [""|n|no|y|ye|yes], [:],
463 [AS_IF([test -f "$with_customs/lib/libcustoms.a"], [:],
465 echo "WARNING: '$with_customs/lib' does not appear to contain the"
466 echo " Customs library. You must build and install Customs"
467 echo " before compiling GNU make."
471 AS_IF([test "x$has_wait_nohang" = xno],
473 echo "WARNING: Your system has neither waitpid() nor wait3()."
474 echo " Without one of these, signal handling is unreliable."
475 echo " You should be aware that running GNU make with -j"
476 echo " could result in erratic behavior."
480 AS_IF([test "x$make_cv_job_server" = xno && test "x$user_job_server" = xyes],
482 echo "WARNING: Make job server requires a POSIX-ish system that"
483 echo " supports the pipe(), sigaction(), and either"
484 echo " waitpid() or wait3() functions. Your system doesn't"
485 echo " appear to provide one or more of those."
486 echo " Disabling job server support."
490 AS_IF([test "x$make_cv_load" = xno && test "x$user_load" = xyes],
492 echo "WARNING: 'load' support requires a POSIX-ish system that"
493 echo " supports the dlopen(), dlsym(), and dlerror() functions."
494 echo " Your system doesn't appear to provide one or more of these."
495 echo " Disabling 'load' support."
499 # Specify what files are to be created.
500 AC_CONFIG_FILES([Makefile glob/Makefile po/Makefile.in config/Makefile \
501 doc/Makefile w32/Makefile])
507 # We only generate the build.sh if we have a build.sh.in; we won't have
508 # one before we've created a distribution.
509 AS_IF([test -f "$srcdir/build.sh.in"],
510 [ ./config.status --file build.sh
515 dnl comment-start: "dnl "
517 dnl comment-start-skip: "\\bdnl\\b\\s *"
518 dnl compile-command: "make configure config.h.in"