1 # Process this file with autoconf to produce a configure script.
3 AC_INIT([GNU make],[3.81rc1],[bug-make@gnu.org])
7 AC_REVISION([[$Id: configure.in,v 1.120 2003/07/31 13:04:32 psmith Exp $]])
10 AC_CONFIG_AUX_DIR(config)
11 AC_CONFIG_SRCDIR(vpath.c)
12 AC_CONFIG_HEADERS(config.h)
15 AM_INIT_AUTOMAKE([1.7.6])
17 # Checks for programs.
22 AC_CHECK_PROG(AR, ar, ar, ar)
23 # Perl is needed for the test suite (only)
24 AC_CHECK_PROG(PERL, perl, perl, perl)
26 # Specialized system macros
35 # Enable gettext, in "external" mode.
37 AM_GNU_GETTEXT_VERSION(0.12.1)
38 AM_GNU_GETTEXT([external])
40 # This test must come as early as possible after the compiler configuration
41 # tests, because the choice of the file model can (in principle) affect
42 # whether functions and headers are available, whether they work, etc.
45 # Checks for libraries.
46 AC_SEARCH_LIBS(getpwnam, [sun])
48 # Checks for header files.
53 AC_CHECK_HEADERS(stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
54 memory.h sys/param.h sys/time.h sys/timeb.h)
63 # Find some definition for uintmax_t
65 AC_CHECK_TYPE(uintmax_t,,[
66 uintmax_t="unsigned long"
67 AC_CHECK_TYPE(unsigned long long,[uintmax_t="unsigned long long"])
68 AC_DEFINE_UNQUOTED(uintmax_t,$uintmax_t,
69 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])])
71 # Find out whether our struct stat returns nanosecond resolution timestamps.
73 AC_STRUCT_ST_MTIM_NSEC
74 AC_MSG_CHECKING([whether to use high resolution file timestamps])
75 AC_CACHE_VAL(make_cv_file_timestamp_hi_res, [
76 make_cv_file_timestamp_hi_res=no
77 if test "$ac_cv_struct_st_mtim_nsec" != no; then
78 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
80 # include <inttypes.h>
82 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
83 [make_cv_file_timestamp_hi_res=yes],
86 AC_MSG_RESULT($make_cv_file_timestamp_hi_res)
87 if test "$make_cv_file_timestamp_hi_res" = yes; then
92 AC_DEFINE_UNQUOTED(FILE_TIMESTAMP_HI_RES, $val,
93 [Use high resolution file timestamps if nonzero.])
95 if test "$make_cv_file_timestamp_hi_res" = yes; then
96 # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
97 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
98 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
99 if test "$ac_cv_search_clock_gettime" != no; then
100 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
101 [Define if you have the clock_gettime function.])
105 # Check for DOS-style pathnames.
108 # See if we have a standard version of gettimeofday(). Since actual
109 # implementations can differ, just make sure we have the most common
111 AC_CACHE_CHECK([for standard gettimeofday], ac_cv_func_gettimeofday,
112 [ac_cv_func_gettimeofday=no
113 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
116 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
117 exit (gettimeofday (&t, 0) != 0
118 || t.tv_sec < 0 || t.tv_usec < 0);
120 [ac_cv_func_gettimeofday=yes],
121 [ac_cv_func_gettimeofday=no],
122 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
123 if test "$ac_cv_func_gettimeofday" = yes; then
124 AC_DEFINE(HAVE_GETTIMEOFDAY, 1,
125 [Define if you have a standard gettimeofday function])
128 AC_CHECK_FUNCS( memcpy memmove strchr strdup mkstemp mktemp fdopen \
129 bsd_signal dup2 getcwd sigsetmask sigaction getgroups \
130 seteuid setegid setlinebuf setreuid setregid setvbuf pipe \
133 make_FUNC_SETVBUF_REVERSED
135 # strcoll() is used by the GNU glob library
141 AC_FUNC_CLOSEDIR_VOID
145 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
146 # doesn't. So, we will.
148 if test "$ac_cv_header_nlist_h" = yes; then
149 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
151 nl.n_name = "string";
153 [make_cv_nlist_struct=yes],
154 [make_cv_nlist_struct=no])
155 if test "$make_cv_nlist_struct" = yes; then
156 AC_DEFINE(NLIST_STRUCT, 1,
157 [Define if struct nlist.n_name is a pointer rather than an array.])
161 AC_CHECK_DECLS([sys_siglist])
164 # Check out the wait reality.
165 AC_CHECK_HEADERS(sys/wait.h)
166 AC_CHECK_FUNCS(waitpid wait3)
167 AC_MSG_CHECKING(for union wait)
168 AC_CACHE_VAL(make_cv_union_wait, [dnl
169 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
170 #include <sys/wait.h>]],
171 [[union wait status; int pid; pid = wait (&status);
173 /* Some POSIXoid systems have both the new-style macros and the old
174 union wait type, and they do not work together. If union wait
175 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
176 if (WEXITSTATUS (status) != 0) pid = -1;
178 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
179 -- blow chunks here --
183 /* Make sure union wait works with waitpid. */
184 pid = waitpid (-1, &status, 0);
187 [make_cv_union_wait=yes],
188 [make_cv_union_wait=no])])
189 if test "$make_cv_union_wait" = yes; then
190 AC_DEFINE(HAVE_UNION_WAIT, 1,
191 [Define this if you have the \`union wait' type in <sys/wait.h>.])
193 AC_MSG_RESULT($make_cv_union_wait)
196 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
197 if test "$PATH_SEPARATOR" = ';'; then
198 AC_DEFINE(HAVE_DOS_PATHS, 1,
199 [Define this if your system requires backslashes or drive specs in pathnames.])
203 # See if the user wants to use pmake's "customs" distributed build capability
205 AC_SUBST(REMOTE) REMOTE=stub
208 AC_HELP_STRING([--with-customs=DIR],
209 [enable remote jobs via Customs--see README.customs]),
212 *) make_cppflags="$CPPFLAGS"
215 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
216 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
219 AC_CHECK_HEADER(customs.h,
222 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
224 CPPFLAGS="$make_cppflags" make_badcust=yes])
227 # Tell automake about this, so it can include the right .c files.
228 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
230 # See if we can handle the job server feature, and if the user wants it.
232 AC_ARG_ENABLE(job-server,
233 AC_HELP_STRING([--disable-job-server],
234 [disallow recursive make communication during -jN]),
235 [make_cv_job_server="$enableval" user_job_server="$enableval"],
236 [make_cv_job_server="yes"])
239 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
240 no/no) has_wait_nohang=no ;;
243 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
244 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
245 [[return SA_RESTART;]])],
246 [make_cv_sa_restart=yes],
247 [make_cv_sa_restart=no])])
248 if test "$make_cv_sa_restart" != no; then
249 AC_DEFINE(HAVE_SA_RESTART, 1,
250 [Define if <signal.h> defines the SA_RESTART constant.])
253 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
255 AC_DEFINE(MAKE_JOBSERVER, 1,
256 [Define this to enable job server support in GNU make.]);;
259 # Find the SCCS commands, so we can include them in our default rules.
261 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
262 if test -f /usr/sccs/get; then
263 make_cv_path_sccs_get=/usr/sccs/get
265 make_cv_path_sccs_get=get
267 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
268 [Define to the name of the SCCS 'get' command.])
270 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
271 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
272 test -f s.conftest; then
273 # We successfully created an SCCS file.
274 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
275 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
276 test -f conftoast; then
277 make_cv_sys_get_minus_G=yes
279 make_cv_sys_get_minus_G=no
281 case "$make_cv_sys_get_minus_G" in
282 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
283 [Define this if the SCCS 'get' command understands the '-G<file>' option.]);;
286 rm -f s.conftest conftoast
288 # Check the system to see if it provides GNU glob. If not, use our
291 AC_MSG_CHECKING(if system libc has GNU glob)
292 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
293 AC_EGREP_CPP(gnu glob,[
294 #include <features.h>
298 #define GLOB_INTERFACE_VERSION 1
299 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
300 # include <gnu-versions.h>
301 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
305 ], [AC_MSG_RESULT(yes)
306 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
307 AC_SUBST(GLOBINC) GLOBINC='-I$(srcdir)/glob'
308 AC_SUBST(GLOBLIB) GLOBLIB=glob/libglob.a
309 make_cv_sys_gnu_glob=no])])
310 # Tell automake about this, so it can build the right .c files.
311 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
313 # Let the makefile know what our build host is
315 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
319 # Include the Maintainer's Makefile section, if it's here.
321 MAINT_MAKEFILE=/dev/null
322 if test -r "$srcdir/maintMakefile"; then
323 MAINT_MAKEFILE="$srcdir/maintMakefile"
325 AC_SUBST_FILE(MAINT_MAKEFILE)
327 # Allow building with dmalloc
331 # Sanity check and inform the user of what we found
333 case "$make_badcust" in
335 echo "WARNING: --with-customs specified but no customs.h could be found;"
336 echo " disabling Customs support."
340 case "$with_customs" in
342 *) if test -f "$with_customs/lib/libcustoms.a"; then
346 echo "WARNING: '$with_customs/lib' does not appear to contain the"
347 echo " Customs library. You must build and install Customs"
348 echo " before compiling GNU make."
353 case "$has_wait_nohang" in
355 echo "WARNING: Your system has neither waitpid() nor wait3()."
356 echo " Without one of these, signal handling is unreliable."
357 echo " You should be aware that running GNU make with -j"
358 echo " could result in erratic behavior."
362 case "$make_cv_job_server/$user_job_server" in
364 echo "WARNING: Make job server requires a POSIX-ish system that"
365 echo " supports the pipe(), sigaction(), and either"
366 echo " waitpid() or wait3() functions. Your system doesn't"
367 echo " appear to provide one or more of those."
368 echo " Disabling job server support."
373 # Specify what files are to be created.
374 # We only generate the build.sh if we have a build.sh.in; we won't have
375 # one before we've created a distribution.
377 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile)
379 if test -f $srcdir/build.sh.in; then
380 AC_CONFIG_FILES(build.sh)
390 dnl comment-start: "dnl "
392 dnl comment-start-skip: "\\bdnl\\b\\s *"
393 dnl compile-command: "make configure config.h.in"