Fix detection of pthread_atfork function.

[pspp] / m4 / thread.m4

diff --git a/m4/thread.m4 b/m4/thread.m4
index df7ffd03a60e1a130d02e2656a4353f2c7fb2122..4ad533cfcdc3d08f3fa5532365a15a40cb8fc2b9 100644 (file)
--- a/m4/thread.m4
+++ b/m4/thread.m4
@@ -1,4 +1,4 @@
-# thread.m4 serial 1
+# thread.m4 serial 2
 dnl Copyright (C) 2008 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -10,6 +10,9 @@ AC_DEFUN([gl_THREAD],
   AC_REQUIRE([AC_C_INLINE])
 
   if test $gl_threads_api = posix; then
+    gl_save_LIBS="$LIBS"
+    LIBS="$LIBS $LIBMULTITHREAD"
     AC_CHECK_FUNCS([pthread_atfork])
+    LIBS="$gl_save_LIBS"
   fi
 ])