X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fceilf.m4;h=6cca950d58d0ad27b7a5638adb7278b5333362bc;hb=e7086a9a301ffcfef17edbcba9e7c0312c33f7a8;hp=6212d7f1f2e3b06c196e5fb4492ece4a3680b424;hpb=456c510f181f53e3e4cbf660260be0cbf2e0158c;p=gnulib.git

diff --git a/m4/ceilf.m4 b/m4/ceilf.m4
index 6212d7f1f..6cca950d5 100644
--- a/m4/ceilf.m4
+++ b/m4/ceilf.m4
@@ -1,5 +1,5 @@
-# ceilf.m4 serial 13
-dnl Copyright (C) 2007, 2009-2012 Free Software Foundation, Inc.
+# ceilf.m4 serial 14
+dnl Copyright (C) 2007, 2009-2013 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.
@@ -22,6 +22,7 @@ AC_DEFUN([gl_FUNC_CEILF],
     fi
     m4_ifdef([gl_FUNC_CEILF_IEEE], [
       if test $gl_ceilf_required = ieee && test $REPLACE_CEILF = 0; then
+        AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
         AC_CACHE_CHECK([whether ceilf works according to ISO C 99 with IEC 60559],
           [gl_cv_func_ceilf_ieee],
           [
@@ -51,7 +52,13 @@ int main (int argc, char *argv[])
               ]])],
               [gl_cv_func_ceilf_ieee=yes],
               [gl_cv_func_ceilf_ieee=no],
-              [gl_cv_func_ceilf_ieee="guessing no"])
+              [case "$host_os" in
+                         # Guess yes on glibc systems.
+                 *-gnu*) gl_cv_func_ceilf_ieee="guessing yes" ;;
+                         # If we don't know, assume the worst.
+                 *)      gl_cv_func_ceilf_ieee="guessing no" ;;
+               esac
+              ])
             LIBS="$save_LIBS"
           ])
         case "$gl_cv_func_ceilf_ieee" in