Distribute allocsa.valgrind.

[gnulib.git] / m4 / clock_time.m4

diff --git a/m4/clock_time.m4 b/m4/clock_time.m4
index 4133398..f3266a7 100644 (file)
--- a/m4/clock_time.m4
+++ b/m4/clock_time.m4
@@ -1,5 +1,5 @@
-# clock_time.m4 serial 1
-dnl Copyright (C) 2002 Free Software Foundation, Inc.
+# clock_time.m4 serial 4
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
 dnl Public License, this file may be distributed as part of a program
@@ -9,15 +9,19 @@ dnl the same distribution terms as the rest of that program.
 # Check for clock_gettime and clock_settime, and sets LIB_CLOCK_GETTIME.
 AC_DEFUN([gl_CLOCK_TIME],
 [
+  # dnl Persuade glibc <time.h> to declare these functions.
+  AC_REQUIRE([AC_GNU_SOURCE])
+
   # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
   # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
-  
+
   # Save and restore LIBS so e.g., -lrt, isn't added to it.  Otherwise, *all*
   # programs in the package would end up linked with that potentially-shared
   # library, inducing unnecessary run-time overhead.
   fetish_saved_libs=$LIBS
     AC_SEARCH_LIBS(clock_gettime, [rt posix4],
-                   [LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
+                   [test "$ac_cv_search_clock_gettime" = "none required" ||
+                    LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime])
     AC_SUBST(LIB_CLOCK_GETTIME)
     AC_CHECK_FUNCS(clock_gettime clock_settime)
   LIBS=$fetish_saved_libs