X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fclock_time.m4;h=0cedfe41b89b3acbb0f9828c5c88ae27b33dfe53;hb=523067dbfb281d3cc27f65007a3893bd694c257d;hp=413339894884ca197f9b75a6c226553fcff2b526;hpb=53b8fa05726a7fb30010e42ce02e44a35f0d7489;p=gnulib.git

diff --git a/m4/clock_time.m4 b/m4/clock_time.m4
index 413339894..0cedfe41b 100644
--- a/m4/clock_time.m4
+++ b/m4/clock_time.m4
@@ -1,24 +1,26 @@
-# clock_time.m4 serial 1
-dnl Copyright (C) 2002 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
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# clock_time.m4 serial 6
+dnl Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
 
 # 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=$LIBS
+  gl_saved_libs=$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
+  LIBS=$gl_saved_libs
 ])