1 # Process this file with autoconf to produce a configure script.
3 AC_INIT([GNU make],[3.81a2],[bug-make@gnu.org])
7 AC_REVISION([[$Id: configure.in,v 1.118 2003/03/25 03:21:42 psmith Exp $]])
10 AC_CONFIG_AUX_DIR(config)
11 AC_CONFIG_SRCDIR(vpath.c)
12 AC_CONFIG_HEADERS(config.h)
18 # Checks for programs.
23 AC_CHECK_PROG(AR, ar, ar, ar)
24 # Perl is needed for the test suite (only)
25 AC_CHECK_PROG(PERL, perl, perl, perl)
27 # Specialized system macros
36 # Enable gettext, in "external" mode.
38 AM_GNU_GETTEXT_VERSION(0.11.5)
39 AM_GNU_GETTEXT([external])
41 # This test must come as early as possible after the compiler configuration
42 # tests, because the choice of the file model can (in principle) affect
43 # whether functions and headers are available, whether they work, etc.
46 # Checks for libraries.
47 AC_SEARCH_LIBS(getpwnam, [sun])
49 # Checks for header files.
54 AC_CHECK_HEADERS(stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
55 memory.h sys/param.h sys/time.h sys/timeb.h)
64 # Find some definition for uintmax_t
66 AC_CHECK_TYPE(uintmax_t,,[
67 uintmax_t="unsigned long"
68 AC_CHECK_TYPE(unsigned long long,[uintmax_t="unsigned long long"])
69 AC_DEFINE_UNQUOTED(uintmax_t,$uintmax_t,
70 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])])
72 # Find out whether our struct stat returns nanosecond resolution timestamps.
74 AC_STRUCT_ST_MTIM_NSEC
75 AC_MSG_CHECKING([whether to use high resolution file timestamps])
76 AC_CACHE_VAL(make_cv_file_timestamp_hi_res, [
77 make_cv_file_timestamp_hi_res=no
78 if test "$ac_cv_struct_st_mtim_nsec" != no; then
79 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
81 # include <inttypes.h>
83 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
84 [make_cv_file_timestamp_hi_res=yes],
87 AC_MSG_RESULT($make_cv_file_timestamp_hi_res)
88 if test "$make_cv_file_timestamp_hi_res" = yes; then
93 AC_DEFINE_UNQUOTED(FILE_TIMESTAMP_HI_RES, $val,
94 [Use high resolution file timestamps if nonzero.])
96 if test "$make_cv_file_timestamp_hi_res" = yes; then
97 # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
98 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
99 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
100 if test "$ac_cv_search_clock_gettime" != no; then
101 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
102 [Define if you have the clock_gettime function.])
107 # See if we have a standard version of gettimeofday(). Since actual
108 # implementations can differ, just make sure we have the most common
110 AC_CACHE_CHECK([for standard gettimeofday], ac_cv_func_gettimeofday,
111 [ac_cv_func_gettimeofday=no
112 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
115 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
116 exit (gettimeofday (&t, 0) != 0
117 || t.tv_sec < 0 || t.tv_usec < 0);
119 [ac_cv_func_gettimeofday=yes],
120 [ac_cv_func_gettimeofday=no],
121 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
122 if test "$ac_cv_func_gettimeofday" = yes; then
123 AC_DEFINE(HAVE_GETTIMEOFDAY, 1,
124 [Define if you have a standard gettimeofday function])
127 AC_CHECK_FUNCS( memcpy memmove strchr strdup mkstemp mktemp fdopen \
128 bsd_signal dup2 getcwd sigsetmask sigaction getgroups \
129 seteuid setegid setlinebuf setreuid setregid setvbuf pipe \
132 make_FUNC_SETVBUF_REVERSED
134 # strcoll() is used by the GNU glob library
140 AC_FUNC_CLOSEDIR_VOID
144 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
145 # doesn't. So, we will.
147 if test "$ac_cv_header_nlist_h" = yes; then
148 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
150 nl.n_name = "string";
152 [make_cv_nlist_struct=yes],
153 [make_cv_nlist_struct=no])
154 if test "$make_cv_nlist_struct" = yes; then
155 AC_DEFINE(NLIST_STRUCT, 1,
156 [Define if struct nlist.n_name is a pointer rather than an array.])
160 AC_CHECK_DECLS([sys_siglist])
163 # Check out the wait reality.
164 AC_CHECK_HEADERS(sys/wait.h)
165 AC_CHECK_FUNCS(waitpid wait3)
166 AC_MSG_CHECKING(for union wait)
167 AC_CACHE_VAL(make_cv_union_wait, [dnl
168 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
169 #include <sys/wait.h>]],
170 [[union wait status; int pid; pid = wait (&status);
172 /* Some POSIXoid systems have both the new-style macros and the old
173 union wait type, and they do not work together. If union wait
174 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
175 if (WEXITSTATUS (status) != 0) pid = -1;
177 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
178 -- blow chunks here --
182 /* Make sure union wait works with waitpid. */
183 pid = waitpid (-1, &status, 0);
186 [make_cv_union_wait=yes],
187 [make_cv_union_wait=no])])
188 if test "$make_cv_union_wait" = yes; then
189 AC_DEFINE(HAVE_UNION_WAIT, 1,
190 [Define this if you have the \`union wait' type in <sys/wait.h>.])
192 AC_MSG_RESULT($make_cv_union_wait)
195 # See if the user wants to use pmake's "customs" distributed build capability
197 AC_SUBST(REMOTE) REMOTE=stub
200 AC_HELP_STRING([--with-customs=DIR],
201 [enable remote jobs via Customs--see README.customs]),
204 *) make_cppflags="$CPPFLAGS"
207 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
208 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
211 AC_CHECK_HEADER(customs.h,
214 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
216 CPPFLAGS="$make_cppflags" make_badcust=yes])
219 # Tell automake about this, so it can include the right .c files.
220 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
222 # See if we can handle the job server feature, and if the user wants it.
224 AC_ARG_ENABLE(job-server,
225 AC_HELP_STRING([--disable-job-server],
226 [disallow recursive make communication during -jN]),
227 [make_cv_job_server="$enableval" user_job_server="$enableval"],
228 [make_cv_job_server="yes"])
231 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
232 no/no) has_wait_nohang=no ;;
235 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
236 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
237 [[return SA_RESTART;]])],
238 [make_cv_sa_restart=yes],
239 [make_cv_sa_restart=no])])
240 if test "$make_cv_sa_restart" != no; then
241 AC_DEFINE(HAVE_SA_RESTART, 1,
242 [Define if <signal.h> defines the SA_RESTART constant.])
245 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
247 AC_DEFINE(MAKE_JOBSERVER, 1,
248 [Define this to enable job server support in GNU make.]);;
251 # Find the SCCS commands, so we can include them in our default rules.
253 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
254 if test -f /usr/sccs/get; then
255 make_cv_path_sccs_get=/usr/sccs/get
257 make_cv_path_sccs_get=get
259 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
260 [Define to the name of the SCCS 'get' command.])
262 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
263 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
264 test -f s.conftest; then
265 # We successfully created an SCCS file.
266 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
267 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
268 test -f conftoast; then
269 make_cv_sys_get_minus_G=yes
271 make_cv_sys_get_minus_G=no
273 case "$make_cv_sys_get_minus_G" in
274 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
275 [Define this if the SCCS 'get' command understands the '-G<file>' option.]);;
278 rm -f s.conftest conftoast
280 # Check the system to see if it provides GNU glob. If not, use our
283 AC_MSG_CHECKING(if system libc has GNU glob)
284 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
285 AC_EGREP_CPP(gnu glob,[
286 #include <features.h>
290 #define GLOB_INTERFACE_VERSION 1
291 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
292 # include <gnu-versions.h>
293 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
297 ], [AC_MSG_RESULT(yes)
298 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
299 AC_SUBST(GLOBINC) GLOBINC='-I$(srcdir)/glob'
300 AC_SUBST(GLOBLIB) GLOBLIB=glob/libglob.a
301 make_cv_sys_gnu_glob=no])])
302 # Tell automake about this, so it can build the right .c files.
303 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
305 # Let the makefile know what our build host is
307 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
311 # Include the Maintainer's Makefile section, if it's here.
313 MAINT_MAKEFILE=/dev/null
314 if test -r "$srcdir/maintMakefile"; then
315 MAINT_MAKEFILE="$srcdir/maintMakefile"
317 AC_SUBST_FILE(MAINT_MAKEFILE)
319 # Allow building with dmalloc
323 # Sanity check and inform the user of what we found
325 case "$make_badcust" in
327 echo "WARNING: --with-customs specified but no customs.h could be found;"
328 echo " disabling Customs support."
332 case "$with_customs" in
334 *) if test -f "$with_customs/lib/libcustoms.a"; then
338 echo "WARNING: '$with_customs/lib' does not appear to contain the"
339 echo " Customs library. You must build and install Customs"
340 echo " before compiling GNU make."
345 case "$has_wait_nohang" in
347 echo "WARNING: Your system has neither waitpid() nor wait3()."
348 echo " Without one of these, signal handling is unreliable."
349 echo " You should be aware that running GNU make with -j"
350 echo " could result in erratic behavior."
354 case "$make_cv_job_server/$user_job_server" in
356 echo "WARNING: Make job server requires a POSIX-ish system that"
357 echo " supports the pipe(), sigaction(), and either"
358 echo " waitpid() or wait3() functions. Your system doesn't"
359 echo " appear to provide one or more of those."
360 echo " Disabling job server support."
365 # Specify what files are to be created.
366 # We only generate the build.sh if we have a build.sh.in; we won't have
367 # one before we've created a distribution.
369 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile)
371 if test -f $srcdir/build.sh.in; then
372 AC_CONFIG_FILES(build.sh)
382 dnl comment-start: "dnl "
384 dnl comment-start-skip: "\\bdnl\\b\\s *"
385 dnl compile-command: "make configure config.h.in"