1 dnl $Id: acinclude.m4,v 1.2 2001/12/21 03:12:50 robs Exp $
3 AC_DEFUN(FCGI_COMMON_CHECKS, [
4 AC_CHECK_TYPE([ssize_t], [int])
6 AC_MSG_CHECKING([for sun_len in sys/un.h])
7 AC_EGREP_HEADER([sun_len], [sys/un.h],
9 AC_DEFINE([HAVE_SOCKADDR_UN_SUN_LEN], [1],
10 [Define if sockaddr_un in sys/un.h contains a sun_len component])],
13 AC_MSG_CHECKING([for fpos_t in stdio.h])
14 AC_EGREP_HEADER([fpos_t], [stdio.h],
16 AC_DEFINE([HAVE_FPOS], [1],
17 [Define if the fpos_t typedef is in stdio.h])],
20 AC_CHECK_HEADERS([sys/socket.h netdb.h netinet/in.h arpa/inet.h])
21 AC_CHECK_HEADERS([sys/time.h limits.h sys/param.h unistd.h])
23 AC_MSG_CHECKING([for a fileno() prototype in stdio.h])
24 AC_EGREP_HEADER([fileno], [stdio.h],
26 AC_DEFINE([HAVE_FILENO_PROTO], [1],
27 [Define if there's a fileno() prototype in stdio.h])],
30 if test "$HAVE_SYS_SOCKET_H"; then
31 AC_MSG_CHECKING([for socklen_t in sys/socket.h])
32 AC_EGREP_HEADER([socklen_t], [sys/socket.h],
34 AC_DEFINE([HAVE_SOCKLEN], [1],
35 [Define if the socklen_t typedef is in sys/socket.h])],
39 #--------------------------------------------------------------------
40 # Do we need cross-process locking on this platform?
41 #--------------------------------------------------------------------
42 AC_MSG_CHECKING([whether cross-process locking is required by accept()])
44 IRIX\ 5.* | SunOS\ 5.* | UNIX_System_V\ 4.0)
46 AC_DEFINE([USE_LOCKING], [1],
47 [Define if cross-process locking is required by accept()])
54 #--------------------------------------------------------------------
55 # Does va_arg(arg, long double) crash the compiler?
56 # hpux 9.04 compiler does and so does Stratus FTX (uses HP's compiler)
57 #--------------------------------------------------------------------
58 AC_MSG_CHECKING([whether va_arg(arg, long double) crashes the compiler])
59 AC_TRY_COMPILE([#include <stdarg.h>],
60 [long double lDblArg; va_list arg; lDblArg = va_arg(arg, long double);],
63 AC_DEFINE([HAVE_VA_ARG_LONG_DOUBLE_BUG], [1],
64 [Define if va_arg(arg, long double) crashes the compiler])])
70 dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
72 dnl This macro figures out how to build C programs using POSIX
73 dnl threads. It sets the PTHREAD_LIBS output variable to the threads
74 dnl library and linker flags, and the PTHREAD_CFLAGS output variable
75 dnl to any special C compiler flags that are needed. (The user can also
76 dnl force certain compiler flags/libs to be tested by setting these
77 dnl environment variables.)
79 dnl Also sets PTHREAD_CC to any special C compiler that is needed for
80 dnl multi-threaded programs (defaults to the value of CC otherwise).
81 dnl (This is necessary on AIX to use the special cc_r compiler alias.)
83 dnl If you are only building threads programs, you may wish to
84 dnl use these variables in your default LIBS, CFLAGS, and CC:
86 dnl LIBS="$PTHREAD_LIBS $LIBS"
87 dnl CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
90 dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
91 dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE
92 dnl to that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
94 dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
95 dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands
96 dnl to run it if it is not found. If ACTION-IF-FOUND is not specified,
97 dnl the default action will define HAVE_PTHREAD.
99 dnl Please let the authors know if this macro fails on any platform,
100 dnl or if you have any other suggestions or comments. This macro was
101 dnl based on work by SGJ on autoconf scripts for FFTW (www.fftw.org)
102 dnl (with help from M. Frigo), as well as ac_pthread and hb_pthread
103 dnl macros posted by AFC to the autoconf macro repository. We are also
104 dnl grateful for the helpful feedback of numerous users.
106 dnl @version $Id: acinclude.m4,v 1.2 2001/12/21 03:12:50 robs Exp $
107 dnl @author Steven G. Johnson <stevenj@alum.mit.edu> and Alejandro Forero Cuervo <bachue@bachue.com>
109 AC_DEFUN([ACX_PTHREAD], [
110 AC_REQUIRE([AC_CANONICAL_HOST])
113 # First, check if the POSIX threads header, pthread.h, is available.
114 # If it isn't, don't bother looking for the threads libraries.
115 AC_CHECK_HEADER(pthread.h, , acx_pthread_ok=noheader)
117 # We must check for the threads library under a number of different
118 # names; the ordering is very important because some systems
119 # (e.g. DEC) have both -lpthread and -lpthreads, where one of the
120 # libraries is broken (non-POSIX).
122 # First of all, check if the user has set any of the PTHREAD_LIBS,
123 # etcetera environment variables, and if threads linking works using
125 if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
126 save_CFLAGS="$CFLAGS"
127 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
129 LIBS="$PTHREAD_LIBS $LIBS"
130 AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
131 AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
132 AC_MSG_RESULT($acx_pthread_ok)
133 if test x"$acx_pthread_ok" = xno; then
138 CFLAGS="$save_CFLAGS"
141 # Create a list of thread flags to try. Items starting with a "-" are
142 # C compiler flags, and other items are library names, except for "none"
143 # which indicates that we try without any flags at all.
145 acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt"
147 # The ordering *is* (sometimes) important. Some notes on the
148 # individual items follow:
150 # pthreads: AIX (must check this before -lpthread)
151 # none: in case threads are in libc; should be tried before -Kthread and
152 # other compiler flags to prevent continual compiler warnings
153 # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
154 # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
155 # lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
156 # -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
157 # -pthreads: Solaris/gcc
158 # -mthreads: Mingw32/gcc, Lynx/gcc
159 # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
160 # doesn't hurt to check since this sometimes defines pthreads too;
161 # also defines -D_REENTRANT)
162 # pthread: Linux, etcetera
163 # --thread-safe: KAI C++
165 case "${host_cpu}-${host_os}" in
168 # On Solaris (at least, for some versions), libc contains stubbed
169 # (non-functional) versions of the pthreads routines, so link-based
170 # tests will erroneously succeed. (We need to link with -pthread or
171 # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
172 # a function called by this macro, so we could check for that, but
173 # who knows whether they'll stub that too in a future libc.) So,
174 # we'll just look for -pthreads and -lpthread first:
176 acx_pthread_flags="-pthread -pthreads pthread -mt $acx_pthread_flags"
180 if test x"$acx_pthread_ok" = xno; then
181 for flag in $acx_pthread_flags; do
185 AC_MSG_CHECKING([whether pthreads work without any flags])
189 AC_MSG_CHECKING([whether pthreads work with $flag])
190 PTHREAD_CFLAGS="$flag"
194 AC_MSG_CHECKING([for the pthreads library -l$flag])
195 PTHREAD_LIBS="-l$flag"
200 save_CFLAGS="$CFLAGS"
201 LIBS="$PTHREAD_LIBS $LIBS"
202 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
204 # Check for various functions. We must include pthread.h,
205 # since some functions may be macros. (On the Sequent, we
206 # need a special flag -Kthread to make this header compile.)
207 # We check for pthread_join because it is in -lpthread on IRIX
208 # while pthread_create is in libc. We check for pthread_attr_init
209 # due to DEC craziness with -lpthreads. We check for
210 # pthread_cleanup_push because it is one of the few pthread
211 # functions on Solaris that doesn't have a non-functional libc stub.
212 # We try pthread_create on general principles.
213 AC_TRY_LINK([#include <pthread.h>],
214 [pthread_t th; pthread_join(th, 0);
215 pthread_attr_init(0); pthread_cleanup_push(0, 0);
216 pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
217 [acx_pthread_ok=yes])
220 CFLAGS="$save_CFLAGS"
222 AC_MSG_RESULT($acx_pthread_ok)
223 if test "x$acx_pthread_ok" = xyes; then
232 # Various other checks:
233 if test "x$acx_pthread_ok" = xyes; then
235 LIBS="$PTHREAD_LIBS $LIBS"
236 save_CFLAGS="$CFLAGS"
237 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
239 # Detect AIX lossage: threads are created detached by default
240 # and the JOINABLE attribute has a nonstandard name (UNDETACHED).
241 AC_MSG_CHECKING([for joinable pthread attribute])
242 AC_TRY_LINK([#include <pthread.h>],
243 [int attr=PTHREAD_CREATE_JOINABLE;],
244 ok=PTHREAD_CREATE_JOINABLE, ok=unknown)
245 if test x"$ok" = xunknown; then
246 AC_TRY_LINK([#include <pthread.h>],
247 [int attr=PTHREAD_CREATE_UNDETACHED;],
248 ok=PTHREAD_CREATE_UNDETACHED, ok=unknown)
250 if test x"$ok" != xPTHREAD_CREATE_JOINABLE; then
251 AC_DEFINE(PTHREAD_CREATE_JOINABLE, $ok,
252 [Define to the necessary symbol if this constant
253 uses a non-standard name on your system.])
256 if test x"$ok" = xunknown; then
257 AC_MSG_WARN([we do not know how to create joinable pthreads])
260 AC_MSG_CHECKING([if more special flags are required for pthreads])
262 case "${host_cpu}-${host_os}" in
263 *-aix* | *-freebsd*) flag="-D_THREAD_SAFE";;
264 *solaris* | alpha*-osf*) flag="-D_REENTRANT";;
266 AC_MSG_RESULT(${flag})
267 if test "x$flag" != xno; then
268 PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
272 CFLAGS="$save_CFLAGS"
274 # More AIX lossage: must compile with cc_r
275 AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC})
280 AC_SUBST(PTHREAD_LIBS)
281 AC_SUBST(PTHREAD_CFLAGS)
284 # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
285 if test x"$acx_pthread_ok" = xyes; then
286 ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
297 dnl @synopsis AC_PROG_CC_WARNINGS([ANSI])
299 dnl Enables a reasonable set of warnings for the C compiler. Optionally,
300 dnl if the first argument is nonempty, turns on flags which enforce and/or
301 dnl enable proper ANSI C if such flags are known to the compiler used.
303 dnl Currently this macro knows about GCC, Solaris C compiler,
304 dnl Digital Unix C compiler, C for AIX Compiler, HP-UX C compiler,
305 dnl and IRIX C compiler.
307 dnl @version $Id: acinclude.m4,v 1.2 2001/12/21 03:12:50 robs Exp $
308 dnl @author Ville Laurikari <vl@iki.fi>
310 AC_DEFUN([AC_PROG_CC_WARNINGS], [
312 if test -z "$ansi"; then
313 msg="for C compiler warning flags"
315 msg="for C compiler warning and ANSI conformance flags"
317 AC_CACHE_CHECK($msg, ac_cv_prog_cc_warnings, [
318 if test -n "$CC"; then
319 cat > conftest.c <<EOF
320 int main(int argc, char **argv) { return 0; }
324 if test "$GCC" = "yes"; then
325 if test -z "$ansi"; then
326 ac_cv_prog_cc_warnings="-Wall"
328 ac_cv_prog_cc_warnings="-Wall -ansi -pedantic"
331 dnl Solaris C compiler
332 elif $CC -flags 2>&1 | grep "Xc.*strict ANSI C" > /dev/null 2>&1 &&
333 $CC -c -v -Xc conftest.c > /dev/null 2>&1 &&
334 test -f conftest.o; then
335 if test -z "$ansi"; then
336 ac_cv_prog_cc_warnings="-v"
338 ac_cv_prog_cc_warnings="-v -Xc"
342 elif $CC > /dev/null 2>&1 &&
343 $CC -c -Aa +w1 conftest.c > /dev/null 2>&1 &&
344 test -f conftest.o; then
345 if test -z "$ansi"; then
346 ac_cv_prog_cc_warnings="+w1"
348 ac_cv_prog_cc_warnings="+w1 -Aa"
351 dnl Digital Unix C compiler
352 elif ! $CC > /dev/null 2>&1 &&
353 $CC -c -verbose -w0 -warnprotos -std1 conftest.c > /dev/null 2>&1 &&
354 test -f conftest.o; then
355 if test -z "$ansi"; then
356 ac_cv_prog_cc_warnings="-verbose -w0 -warnprotos"
358 ac_cv_prog_cc_warnings="-verbose -w0 -warnprotos -std1"
361 dnl C for AIX Compiler
362 elif $CC > /dev/null 2>&1 | grep AIX > /dev/null 2>&1 &&
363 $CC -c -qlanglvl=ansi -qinfo=all conftest.c > /dev/null 2>&1 &&
364 test -f conftest.o; then
365 if test -z "$ansi"; then
366 ac_cv_prog_cc_warnings="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd"
368 ac_cv_prog_cc_warnings="-qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd -qlanglvl=ansi"
372 elif $CC -fullwarn -ansi -ansiE > /dev/null 2>&1 &&
373 test -f conftest.o; then
374 if test -z "$ansi"; then
375 ac_cv_prog_cc_warnings="-fullwarn"
377 ac_cv_prog_cc_warnings="-fullwarn -ansi -ansiE"
383 if test -n "$ac_cv_prog_cc_warnings"; then
384 CFLAGS="$CFLAGS $ac_cv_prog_cc_warnings"
386 ac_cv_prog_cc_warnings="unknown"