dnl CF_WITH_PTHREAD version: 5 updated: 2011/12/10 19:01:56
dnl ---------------
dnl Check for POSIX thread library.
AC_DEFUN([CF_WITH_PTHREAD],
[
AC_MSG_CHECKING(if you want to link with the pthread library)
AC_ARG_WITH(pthread,
    [  --with-pthread          use POSIX thread library],
    [with_pthread=$withval],
    [with_pthread=no])
AC_MSG_RESULT($with_pthread)

if test "$with_pthread" != no ; then
    AC_CHECK_HEADER(pthread.h,[
        AC_DEFINE(HAVE_PTHREADS_H)

	for cf_lib_pthread in pthread c_r
	do
	    AC_MSG_CHECKING(if we can link with the $cf_lib_pthread library)
	    cf_save_LIBS="$LIBS"
	    CF_ADD_LIB($cf_lib_pthread)
	    AC_TRY_LINK([
#include <pthread.h>
],[
		int rc = pthread_create(0,0,0,0);
		int r2 = pthread_mutexattr_settype(0, 0);
],[with_pthread=yes],[with_pthread=no])
	    LIBS="$cf_save_LIBS"
	    AC_MSG_RESULT($with_pthread)
	    test "$with_pthread" = yes && break
	done

	if test "$with_pthread" = yes ; then
	    CF_ADD_LIB($cf_lib_pthread)
	    AC_DEFINE(HAVE_LIBPTHREADS)
	else
	    AC_MSG_ERROR(Cannot link with pthread library)
	fi
    ])
fi
])
