X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fisnand.m4;h=fb2c0f9be4e90751634691182cc7d41d4cdb3371;hb=ce38c27828c6a3286e99e312d50fe140a1ec334b;hp=cd916284dfcf0d2cb53436a466f4aed613fda461;hpb=b2e2010c7c902235b5efb5bd3c6529f61b093aa4;p=gnulib.git

diff --git a/m4/isnand.m4 b/m4/isnand.m4
index cd916284d..fb2c0f9be 100644
--- a/m4/isnand.m4
+++ b/m4/isnand.m4
@@ -1,5 +1,5 @@
-# isnand.m4 serial 6
-dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
+# isnand.m4 serial 8
+dnl Copyright (C) 2007-2011 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.
@@ -58,16 +58,18 @@ AC_DEFUN([gl_HAVE_ISNAND_IN_LIBM],
     [
       save_LIBS="$LIBS"
       LIBS="$LIBS -lm"
-      AC_TRY_LINK([#include <math.h>
-                   #if __GNUC__ >= 4
-                   # undef isnand
-                   # define isnand(x) __builtin_isnand ((double)(x))
-                   #elif defined isnan
-                   # undef isnand
-                   # define isnand(x) isnan ((double)(x))
-                   #endif
-                   double x;],
-                  [return isnand (x);],
+      AC_LINK_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[#include <math.h>
+             #if __GNUC__ >= 4
+             # undef isnand
+             # define isnand(x) __builtin_isnan ((double)(x))
+             #elif defined isnan
+             # undef isnand
+             # define isnand(x) isnan ((double)(x))
+             #endif
+             double x;]],
+           [[return isnand (x);]])],
         [gl_cv_func_isnand_in_libm=yes],
         [gl_cv_func_isnand_in_libm=no])
       LIBS="$save_LIBS"
@@ -79,16 +81,18 @@ AC_DEFUN([gl_HAVE_ISNAND_NO_LIBM],
   AC_CACHE_CHECK([whether isnan(double) can be used without linking with libm],
     [gl_cv_func_isnand_no_libm],
     [
-      AC_TRY_LINK([#include <math.h>
-                   #if __GNUC__ >= 4
-                   # undef isnand
-                   # define isnand(x) __builtin_isnan ((double)(x))
-                   #else
-                   # undef isnand
-                   # define isnand(x) isnan ((double)(x))
-                   #endif
-                   double x;],
-                  [return isnand (x);],
+      AC_LINK_IFELSE(
+        [AC_LANG_PROGRAM(
+           [[#include <math.h>
+             #if __GNUC__ >= 4
+             # undef isnand
+             # define isnand(x) __builtin_isnan ((double)(x))
+             #else
+             # undef isnand
+             # define isnand(x) isnan ((double)(x))
+             #endif
+             double x;]],
+           [[return isnand (x);]])],
         [gl_cv_func_isnand_no_libm=yes],
         [gl_cv_func_isnand_no_libm=no])
     ])