X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fsched_h.m4;h=28b6dbd5bb453b2302b659ed59bb67403dd7b71e;hb=cea318a913148d825c03a4e45f4553e4cb4e2880;hp=6a46e4745f23f42efc7dbd96dd206ca953e55648;hpb=8397b02df89ed84cd54959cc2dbc1bb1852cfee9;p=gnulib.git

diff --git a/m4/sched_h.m4 b/m4/sched_h.m4
index 6a46e4745..28b6dbd5b 100644
--- a/m4/sched_h.m4
+++ b/m4/sched_h.m4
@@ -1,4 +1,4 @@
-# sched_h.m4 serial 3
+# sched_h.m4 serial 6
 dnl Copyright (C) 2008-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -13,6 +13,7 @@ AC_DEFUN([gl_SCHED_H],
        #include <sched.h>
        struct sched_param a;
        int b[] = { SCHED_FIFO, SCHED_RR, SCHED_OTHER };
+       pid_t t1;
      ]])],
     [SCHED_H=''],
     [SCHED_H='sched.h'
@@ -30,6 +31,10 @@ AC_DEFUN([gl_SCHED_H],
        [HAVE_STRUCT_SCHED_PARAM=1], [HAVE_STRUCT_SCHED_PARAM=0],
        [#include <sched.h>])
      AC_SUBST([HAVE_STRUCT_SCHED_PARAM])
+
+     dnl Ensure the type pid_t gets defined.
+     AC_REQUIRE([AC_TYPE_PID_T])
     ])
   AC_SUBST([SCHED_H])
+  AM_CONDITIONAL([GL_GENERATE_SCHED_H], [test -n "$SCHED_H"])
 ])