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# pthread.m4
dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_PTHREAD_CHECK],
[
AC_REQUIRE([gl_PTHREAD_DEFAULTS])
AC_CHECK_HEADERS_ONCE([pthread.h])
gl_CHECK_NEXT_HEADERS([pthread.h])
if test $ac_cv_header_pthread_h = yes; then
HAVE_PTHREAD_H=1
else
HAVE_PTHREAD_H=0
fi
AC_CHECK_TYPES([pthread_t, pthread_spinlock_t], [], [],
[AC_INCLUDES_DEFAULT[
#if HAVE_PTHREAD_H
#include <pthread.h>
#endif]])
if test $ac_cv_type_pthread_t != yes; then
HAVE_PTHREAD_T=0
fi
if test $ac_cv_type_pthread_spinlock_t != yes; then
HAVE_PTHREAD_SPINLOCK_T=0
fi
if test $ac_cv_header_pthread_h != yes ||
test $ac_cv_type_pthread_t != yes ||
test $ac_cv_type_pthread_spinlock_t != yes; then
PTHREAD_H='pthread.h'
fi
LIB_PTHREAD=
if test $ac_cv_header_pthread_h = yes; then
gl_saved_libs=$LIBS
AC_SEARCH_LIBS([pthread_create], [pthread],
[if test "$ac_cv_search_pthread_create" != "none required"; then
LIB_PTHREAD="$ac_cv_search_pthread_create"
fi])
LIBS="$gl_saved_libs"
fi
AC_SUBST([LIB_PTHREAD])
AC_REQUIRE([AC_C_INLINE])
AC_REQUIRE([AC_C_RESTRICT])
])
AC_DEFUN([gl_PTHREAD_DEFAULTS],
[
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_PTHREAD_H=1; AC_SUBST([HAVE_PTHREAD_H])
HAVE_PTHREAD_T=1; AC_SUBST([HAVE_PTHREAD_T])
HAVE_PTHREAD_SPINLOCK_T=1; AC_SUBST([HAVE_PTHREAD_SPINLOCK_T])
PTHREAD_H=''; AC_SUBST([PTHREAD_H])
])
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