2 dnl Copyright (C) 2009-2012 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_PTHREAD_CHECK],
9 AC_REQUIRE([gl_PTHREAD_DEFAULTS])
10 gl_CHECK_NEXT_HEADERS([pthread.h])
11 if test $ac_cv_header_pthread_h = yes; then
17 AC_CHECK_TYPES([pthread_t, pthread_spinlock_t], [], [],
22 if test $ac_cv_type_pthread_t != yes; then
25 if test $ac_cv_type_pthread_spinlock_t != yes; then
26 HAVE_PTHREAD_SPINLOCK_T=0
29 if test $ac_cv_header_pthread_h != yes ||
30 test $ac_cv_type_pthread_t != yes ||
31 test $ac_cv_type_pthread_spinlock_t != yes; then
38 AM_CONDITIONAL([GL_GENERATE_PTHREAD_H], [test -n "$PTHREAD_H"])
41 if test $ac_cv_header_pthread_h = yes; then
42 dnl We cannot use AC_SEARCH_LIBS here, because on OSF/1 5.1 pthread_join
43 dnl is defined as a macro which expands to __phread_join, and libpthread
44 dnl contains a definition for __phread_join but none for pthread_join.
45 dnl Also, FreeBSD 9 puts pthread_create in libpthread and pthread_join
46 dnl in libc, whereas on IRIX 6.5 the reverse is true; so check for both.
47 AC_CACHE_CHECK([for library containing pthread_create and pthread_join],
51 for gl_lib_prefix in '' '-lpthread'; do
52 LIBS="$gl_lib_prefix $gl_saved_libs"
55 [[#include <pthread.h>
56 void *noop (void *p) { return p; }]],
59 pthread_create (&pt, 0, noop, arg);
60 pthread_join (pthread_self (), &arg);]])],
61 [if test -z "$gl_lib_prefix"; then
62 gl_cv_lib_pthread="none required"
64 gl_cv_lib_pthread=$gl_lib_prefix
66 test -n "$gl_cv_lib_pthread" && break
70 if test "$gl_cv_lib_pthread" != "none required"; then
71 LIB_PTHREAD="$gl_cv_lib_pthread"
74 AC_SUBST([LIB_PTHREAD])
76 AC_REQUIRE([AC_C_RESTRICT])
79 AC_DEFUN([gl_PTHREAD_DEFAULTS],
81 dnl Assume proper GNU behavior unless another module says otherwise.
82 HAVE_PTHREAD_H=1; AC_SUBST([HAVE_PTHREAD_H])
83 HAVE_PTHREAD_T=1; AC_SUBST([HAVE_PTHREAD_T])
84 HAVE_PTHREAD_SPINLOCK_T=1; AC_SUBST([HAVE_PTHREAD_SPINLOCK_T])