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 1.119 2003/05/02 01:44:59 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 "$ac_cv_search_clock_gettime" != no; then
101 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
102 [Define if you have the clock_gettime function.])
106 # Check for DOS-style pathnames.
109 # See if we have a standard version of gettimeofday(). Since actual
110 # implementations can differ, just make sure we have the most common
112 AC_CACHE_CHECK([for standard gettimeofday], ac_cv_func_gettimeofday,
113 [ac_cv_func_gettimeofday=no
114 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
117 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
118 exit (gettimeofday (&t, 0) != 0
119 || t.tv_sec < 0 || t.tv_usec < 0);
121 [ac_cv_func_gettimeofday=yes],
122 [ac_cv_func_gettimeofday=no],
123 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
124 if test "$ac_cv_func_gettimeofday" = yes; then
125 AC_DEFINE(HAVE_GETTIMEOFDAY, 1,
126 [Define if you have a standard gettimeofday function])
129 AC_CHECK_FUNCS( memcpy memmove strchr strdup mkstemp mktemp fdopen \
130 bsd_signal dup2 getcwd sigsetmask sigaction getgroups \
131 seteuid setegid setlinebuf setreuid setregid setvbuf pipe \
134 make_FUNC_SETVBUF_REVERSED
136 # strcoll() is used by the GNU glob library
142 AC_FUNC_CLOSEDIR_VOID
146 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
147 # doesn't. So, we will.
149 if test "$ac_cv_header_nlist_h" = yes; then
150 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
152 nl.n_name = "string";
154 [make_cv_nlist_struct=yes],
155 [make_cv_nlist_struct=no])
156 if test "$make_cv_nlist_struct" = yes; then
157 AC_DEFINE(NLIST_STRUCT, 1,
158 [Define if struct nlist.n_name is a pointer rather than an array.])
162 AC_CHECK_DECLS([sys_siglist])
165 # Check out the wait reality.
166 AC_CHECK_HEADERS(sys/wait.h)
167 AC_CHECK_FUNCS(waitpid wait3)
168 AC_MSG_CHECKING(for union wait)
169 AC_CACHE_VAL(make_cv_union_wait, [dnl
170 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
171 #include <sys/wait.h>]],
172 [[union wait status; int pid; pid = wait (&status);
174 /* Some POSIXoid systems have both the new-style macros and the old
175 union wait type, and they do not work together. If union wait
176 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
177 if (WEXITSTATUS (status) != 0) pid = -1;
179 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
180 -- blow chunks here --
184 /* Make sure union wait works with waitpid. */
185 pid = waitpid (-1, &status, 0);
188 [make_cv_union_wait=yes],
189 [make_cv_union_wait=no])])
190 if test "$make_cv_union_wait" = yes; then
191 AC_DEFINE(HAVE_UNION_WAIT, 1,
192 [Define this if you have the \`union wait' type in <sys/wait.h>.])
194 AC_MSG_RESULT($make_cv_union_wait)
197 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
198 if test "$PATH_SEPARATOR" = ';'; then
199 AC_DEFINE(HAVE_DOS_PATHS, 1,
200 [Define this if your system requires backslashes or drive specs in pathnames.])
204 # See if the user wants to use pmake's "customs" distributed build capability
206 AC_SUBST(REMOTE) REMOTE=stub
209 AC_HELP_STRING([--with-customs=DIR],
210 [enable remote jobs via Customs--see README.customs]),
213 *) make_cppflags="$CPPFLAGS"
216 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
217 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
220 AC_CHECK_HEADER(customs.h,
223 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
225 CPPFLAGS="$make_cppflags" make_badcust=yes])
228 # Tell automake about this, so it can include the right .c files.
229 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
231 # See if we can handle the job server feature, and if the user wants it.
233 AC_ARG_ENABLE(job-server,
234 AC_HELP_STRING([--disable-job-server],
235 [disallow recursive make communication during -jN]),
236 [make_cv_job_server="$enableval" user_job_server="$enableval"],
237 [make_cv_job_server="yes"])
240 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
241 no/no) has_wait_nohang=no ;;
244 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
245 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
246 [[return SA_RESTART;]])],
247 [make_cv_sa_restart=yes],
248 [make_cv_sa_restart=no])])
249 if test "$make_cv_sa_restart" != no; then
250 AC_DEFINE(HAVE_SA_RESTART, 1,
251 [Define if <signal.h> defines the SA_RESTART constant.])
254 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
256 AC_DEFINE(MAKE_JOBSERVER, 1,
257 [Define this to enable job server support in GNU make.]);;
260 # Find the SCCS commands, so we can include them in our default rules.
262 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
263 if test -f /usr/sccs/get; then
264 make_cv_path_sccs_get=/usr/sccs/get
266 make_cv_path_sccs_get=get
268 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
269 [Define to the name of the SCCS 'get' command.])
271 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
272 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
273 test -f s.conftest; then
274 # We successfully created an SCCS file.
275 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
276 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
277 test -f conftoast; then
278 make_cv_sys_get_minus_G=yes
280 make_cv_sys_get_minus_G=no
282 case "$make_cv_sys_get_minus_G" in
283 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
284 [Define this if the SCCS 'get' command understands the '-G<file>' option.]);;
287 rm -f s.conftest conftoast
289 # Check the system to see if it provides GNU glob. If not, use our
292 AC_MSG_CHECKING(if system libc has GNU glob)
293 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
294 AC_EGREP_CPP(gnu glob,[
295 #include <features.h>
299 #define GLOB_INTERFACE_VERSION 1
300 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
301 # include <gnu-versions.h>
302 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
306 ], [AC_MSG_RESULT(yes)
307 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
308 AC_SUBST(GLOBINC) GLOBINC='-I$(srcdir)/glob'
309 AC_SUBST(GLOBLIB) GLOBLIB=glob/libglob.a
310 make_cv_sys_gnu_glob=no])])
311 # Tell automake about this, so it can build the right .c files.
312 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
314 # Let the makefile know what our build host is
316 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
320 # Include the Maintainer's Makefile section, if it's here.
322 MAINT_MAKEFILE=/dev/null
323 if test -r "$srcdir/maintMakefile"; then
324 MAINT_MAKEFILE="$srcdir/maintMakefile"
326 AC_SUBST_FILE(MAINT_MAKEFILE)
328 # Allow building with dmalloc
332 # Sanity check and inform the user of what we found
334 case "$make_badcust" in
336 echo "WARNING: --with-customs specified but no customs.h could be found;"
337 echo " disabling Customs support."
341 case "$with_customs" in
343 *) if test -f "$with_customs/lib/libcustoms.a"; then
347 echo "WARNING: '$with_customs/lib' does not appear to contain the"
348 echo " Customs library. You must build and install Customs"
349 echo " before compiling GNU make."
354 case "$has_wait_nohang" in
356 echo "WARNING: Your system has neither waitpid() nor wait3()."
357 echo " Without one of these, signal handling is unreliable."
358 echo " You should be aware that running GNU make with -j"
359 echo " could result in erratic behavior."
363 case "$make_cv_job_server/$user_job_server" in
365 echo "WARNING: Make job server requires a POSIX-ish system that"
366 echo " supports the pipe(), sigaction(), and either"
367 echo " waitpid() or wait3() functions. Your system doesn't"
368 echo " appear to provide one or more of those."
369 echo " Disabling job server support."
374 # Specify what files are to be created.
375 # We only generate the build.sh if we have a build.sh.in; we won't have
376 # one before we've created a distribution.
378 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile)
380 if test -f $srcdir/build.sh.in; then
381 AC_CONFIG_FILES(build.sh)
391 dnl comment-start: "dnl "
393 dnl comment-start-skip: "\\bdnl\\b\\s *"
394 dnl compile-command: "make configure config.h.in"