X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgethrxtime.m4;h=4d1530aa976630ac233fb28d8539b15be954eae8;hb=9723bfe9bb9af8309314ad6230f7661000ba03b1;hp=ef1758183cca8cd7dc2c42b28c400e2a67d9728b;hpb=b7be78fd0c455acefbdf32618c2f6488915c1a33;p=gnulib.git

diff --git a/m4/gethrxtime.m4 b/m4/gethrxtime.m4
index ef1758183..4d1530aa9 100644
--- a/m4/gethrxtime.m4
+++ b/m4/gethrxtime.m4
@@ -1,5 +1,5 @@
-# gethrxtime.m4 serial 9
-dnl Copyright (C) 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
+# gethrxtime.m4 serial 11
+dnl Copyright (C) 2005-2006, 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,
 dnl with or without modifications, as long as this notice is preserved.
@@ -11,14 +11,31 @@ AC_DEFUN([gl_GETHRXTIME],
   AC_REQUIRE([gl_ARITHMETIC_HRTIME_T])
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
   AC_REQUIRE([gl_XTIME])
-  AC_CHECK_DECLS([gethrtime], [], [], [#include <time.h>])
+  AC_CHECK_DECLS([gethrtime], [], [], [[#include <time.h>]])
   LIB_GETHRXTIME=
-  case $ac_cv_have_decl_gethrtime,$gl_cv_arithmetic_hrtime_t in
-  yes,yes) ;;
-  *)
-    AC_LIBOBJ([gethrxtime])
-    gl_PREREQ_GETHRXTIME;;
-  esac
+  if test $ac_cv_have_decl_gethrtime = no \
+     || test $gl_cv_arithmetic_hrtime_t = no; then
+    dnl Find libraries needed to link lib/gethrxtime.c.
+    AC_REQUIRE([gl_CLOCK_TIME])
+    AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+    AC_CHECK_FUNCS_ONCE([nanouptime])
+    if test $ac_cv_func_nanouptime != yes; then
+      AC_CACHE_CHECK([whether CLOCK_MONOTONIC or CLOCK_REALTIME is defined],
+        [gl_cv_have_clock_gettime_macro],
+        [AC_EGREP_CPP([have_clock_gettime_macro],
+          [
+#          include <time.h>
+#          if defined CLOCK_MONOTONIC || defined CLOCK_REALTIME
+            have_clock_gettime_macro
+#          endif
+          ],
+          [gl_cv_have_clock_gettime_macro=yes],
+          [gl_cv_have_clock_gettime_macro=no])])
+      if test $gl_cv_have_clock_gettime_macro = yes; then
+        LIB_GETHRXTIME=$LIB_CLOCK_GETTIME
+      fi
+    fi
+  fi
   AC_SUBST([LIB_GETHRXTIME])
 ])
 
@@ -31,7 +48,7 @@ AC_DEFUN([gl_ARITHMETIC_HRTIME_T],
   AC_CACHE_CHECK([for arithmetic hrtime_t], [gl_cv_arithmetic_hrtime_t],
     [AC_COMPILE_IFELSE(
        [AC_LANG_PROGRAM([[#include <time.h>]],
-	  [[hrtime_t x = 0; return x/x;]])],
+          [[hrtime_t x = 0; return x/x;]])],
        [gl_cv_arithmetic_hrtime_t=yes],
        [gl_cv_arithmetic_hrtime_t=no])])
   if test $gl_cv_arithmetic_hrtime_t = yes; then
@@ -51,24 +68,6 @@ AC_DEFUN([gl_XTIME],
 # Prerequisites of lib/gethrxtime.c.
 AC_DEFUN([gl_PREREQ_GETHRXTIME],
 [
-  AC_REQUIRE([gl_CLOCK_TIME])
-  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
-  AC_CHECK_FUNCS_ONCE([microuptime nanouptime])
-
-  if test $ac_cv_func_nanouptime != yes; then
-    AC_CACHE_CHECK([whether CLOCK_MONOTONIC or CLOCK_REALTIME is defined],
-      gl_cv_have_clock_gettime_macro,
-      [AC_EGREP_CPP([have_clock_gettime_macro],
-	[
-#        include <time.h>
-#        if defined CLOCK_MONOTONIC || defined CLOCK_REALTIME
-	  have_clock_gettime_macro
-#        endif
-	],
-	gl_cv_have_clock_gettime_macro=yes,
-	gl_cv_have_clock_gettime_macro=no)])
-    if test $gl_cv_have_clock_gettime_macro = yes; then
-      LIB_GETHRXTIME=$LIB_CLOCK_GETTIME
-    fi
-  fi
+  AC_CHECK_FUNCS_ONCE([microuptime])
+  :
 ])