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 $ac_cv_type_pthread_spinlock_t != yes; then
37 AM_CONDITIONAL([GL_GENERATE_PTHREAD_H], [test -n "$PTHREAD_H"])
40 if test $ac_cv_header_pthread_h = yes; then
41 dnl We cannot use AC_SEARCH_LIBS here, because on OSF/1 5.1 pthread_join
42 dnl is defined as a macro which expands to __phread_join, and libpthread
43 dnl contains a definition for __phread_join but none for pthread_join.
44 dnl Also, FreeBSD 9 puts pthread_create in libpthread and pthread_join
45 dnl in libc, whereas on IRIX 6.5 the reverse is true; so check for both.
46 AC_CACHE_CHECK([for library containing pthread_create and pthread_join],
50 for gl_lib_prefix in '' '-lpthread'; do
51 LIBS="$gl_lib_prefix $gl_saved_libs"
54 [[#include <pthread.h>
55 void *noop (void *p) { return p; }]],
58 pthread_create (&pt, 0, noop, arg);
59 pthread_join (pthread_self (), &arg);]])],
60 [if test -z "$gl_lib_prefix"; then
61 gl_cv_lib_pthread="none required"
63 gl_cv_lib_pthread=$gl_lib_prefix
65 test -n "$gl_cv_lib_pthread" && break
69 if test "$gl_cv_lib_pthread" != "none required"; then
70 LIB_PTHREAD="$gl_cv_lib_pthread"
73 AC_SUBST([LIB_PTHREAD])
75 AC_REQUIRE([AC_C_INLINE])
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])