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# See: http://gcc.gnu.org/ml/gcc/2000-05/msg01141.html
AC_DEFUN([CHECK_PTHREAD],
[
AC_CHECK_LIB(pthread,pthread_create,
[
PTHREAD_CPPFLAGS=
PTHREAD_LDFLAGS=
PTHREAD_LIBS=-lpthread
],[
AC_MSG_CHECKING(if compiler supports -pthread)
save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -pthread"
AC_TRY_LINK(
[
#include <pthread.h>
],[
pthread_create(0,0,0,0);
],[
AC_MSG_RESULT(yes)
PTHREAD_CPPFLAGS=-pthread
PTHREAD_LDFLAGS=-pthread
PTHREAD_LIBS=
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING(if compiler supports -pthreads)
save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$save_CPPFLAGS -pthreads"
AC_TRY_LINK(
[
#include <pthread.h>
],[
pthread_create(0,0,0,0);
],[
AC_MSG_RESULT(yes)
PTHREAD_CPPFLAGS=-pthreads
PTHREAD_LDFLAGS=-pthreads
PTHREAD_LIBS=
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING(if compiler supports -threads)
save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$save_CPPFLAGS -threads"
AC_TRY_LINK(
[
#include <pthread.h>
],[
pthread_create(0,0,0,0);
],[
AC_MSG_RESULT(yes)
PTHREAD_CPPFLAGS=-threads
PTHREAD_LDFLAGS=-threads
PTHREAD_LIBS=
],[
AC_MSG_ERROR([Your system is not supporting pthreads!])
])
])
])
CPPFLAGS="$save_CPPFLAGS"
])
])
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