xref: /PHP-8.0/TSRM/threads.m4 (revision 1c9e8e8f)
1dnl  Copyright (c) 1999, 2000 Sascha Schumann. All rights reserved.
2dnl
3dnl  Redistribution and use in source and binary forms, with or without
4dnl  modification, are permitted provided that the following conditions
5dnl  are met:
6dnl
7dnl  1. Redistributions of source code must retain the above copyright
8dnl     notice, this list of conditions and the following disclaimer.
9dnl
10dnl  2. Redistributions in binary form must reproduce the above copyright
11dnl     notice, this list of conditions and the following disclaimer in
12dnl     the documentation and/or other materials provided with the
13dnl     distribution.
14dnl
15dnl  THIS SOFTWARE IS PROVIDED BY SASCHA SCHUMANN ``AS IS'' AND ANY
16dnl  EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17dnl  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18dnl  PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL SASCHA SCHUMANN OR
19dnl  HIS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20dnl  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21dnl  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22dnl  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23dnl  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24dnl  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25dnl  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26dnl  OF THE POSSIBILITY OF SUCH DAMAGE.
27
28dnl
29dnl PTHREADS_FLAGS
30dnl
31dnl Set some magic defines to achieve POSIX threads conformance.
32dnl
33AC_DEFUN([PTHREADS_FLAGS],[
34  if test -z "$host_alias" && test -n "$host"; then
35    host_alias=$host
36  fi
37  if test -z "$host_alias"; then
38    AC_MSG_ERROR(host_alias is not set. Make sure to run config.guess)
39  fi
40  case $host_alias in
41  *solaris*)
42    PTHREAD_FLAGS="-D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT";;
43  *freebsd*)
44    PTHREAD_FLAGS="-D_REENTRANT -D_THREAD_SAFE";;
45  *linux*)
46    PTHREAD_FLAGS=-D_REENTRANT;;
47  *aix*)
48    PTHREAD_FLAGS=-D_THREAD_SAFE;;
49  *irix*)
50    PTHREAD_FLAGS=-D_POSIX_THREAD_SAFE_FUNCTIONS;;
51  *hpux*)
52    PTHREAD_FLAGS=-D_REENTRANT;;
53  *sco*)
54    PTHREAD_FLAGS=-D_REENTRANT;;
55  esac
56
57  if test -n "$PTHREAD_FLAGS"; then
58    CPPFLAGS="$CPPFLAGS $PTHREAD_FLAGS"
59  fi
60])
61
62dnl
63dnl PTHREADS_CHECK_COMPILE
64dnl
65dnl Check whether the current setup can use POSIX threads calls.
66dnl
67AC_DEFUN([PTHREADS_CHECK_COMPILE], [
68AC_LINK_IFELSE([ AC_LANG_SOURCE([
69#include <pthread.h>
70#include <stddef.h>
71
72void *thread_routine(void *data) {
73    return data;
74}
75
76int main() {
77    pthread_t thd;
78    pthread_mutexattr_t mattr;
79    int data = 1;
80    pthread_mutexattr_init(&mattr);
81    return pthread_create(&thd, NULL, thread_routine, &data);
82} ]) ], [
83  pthreads_checked=yes
84  ], [
85  pthreads_checked=no
86  ]
87) ] )
88
89dnl
90dnl PTHREADS_CHECK
91dnl
92dnl Try to find a way to enable POSIX threads.
93dnl
94dnl  Magic flags
95dnl  -kthread          gcc (FreeBSD)
96dnl  -Kthread          UDK cc (UnixWare)
97dnl  -mt               WorkShop cc (Solaris)
98dnl  -mthreads         gcc (AIX)
99dnl  -pthread          gcc (Linux, FreeBSD, NetBSD, OpenBSD)
100dnl  -pthreads         gcc (Solaris)
101dnl  -qthreaded        AIX cc V5
102dnl  -threads          gcc (HP-UX)
103dnl
104AC_DEFUN([PTHREADS_CHECK],[
105AC_CACHE_CHECK(for pthreads_cflags,ac_cv_pthreads_cflags,[
106ac_cv_pthreads_cflags=
107if test "$pthreads_working" != "yes"; then
108  for flag in -kthread -pthread -pthreads -mthreads -Kthread -threads -mt -qthreaded; do
109    ac_save=$CFLAGS
110    CFLAGS="$CFLAGS $flag"
111    PTHREADS_CHECK_COMPILE
112    CFLAGS=$ac_save
113    if test "$pthreads_checked" = "yes"; then
114      ac_cv_pthreads_cflags=$flag
115      break
116    fi
117  done
118fi
119])
120
121AC_CACHE_CHECK(for pthreads_lib, ac_cv_pthreads_lib,[
122ac_cv_pthreads_lib=
123if test "$pthreads_working" != "yes"; then
124 for lib in pthread pthreads c_r; do
125    ac_save=$LIBS
126    LIBS="$LIBS -l$lib"
127    PTHREADS_CHECK_COMPILE
128    LIBS=$ac_save
129    if test "$pthreads_checked" = "yes"; then
130      ac_cv_pthreads_lib=$lib
131      break
132    fi
133  done
134fi
135])
136
137if test "x$ac_cv_pthreads_cflags" != "x" -o "x$ac_cv_pthreads_lib" != "x"; then
138  pthreads_working="yes"
139fi
140])
141