X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=m4%2Fremainderl.m4;h=db5ef3aaceeda3b94fb313cfa422b90ed659797a;hb=53a617f5e118ec5642daa3da45fcef0bf5593b12;hp=b40464a836de38f5bec4be544f21b437e8a25e3e;hpb=77d42cc5aacc731bd4068de41ee73c716b6dd01c;p=gnulib.git

diff --git a/m4/remainderl.m4 b/m4/remainderl.m4
index b40464a83..db5ef3aac 100644
--- a/m4/remainderl.m4
+++ b/m4/remainderl.m4
@@ -1,5 +1,5 @@
-# remainderl.m4 serial 6
-dnl Copyright (C) 2012 Free Software Foundation, Inc.
+# remainderl.m4 serial 7
+dnl Copyright (C) 2012-2013 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.
@@ -59,6 +59,7 @@ AC_DEFUN([gl_FUNC_REMAINDERL],
 
     m4_ifdef([gl_FUNC_REMAINDERL_IEEE], [
       if test $gl_remainderl_required = ieee && test $REPLACE_REMAINDERL = 0; then
+        AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
         AC_CACHE_CHECK([whether remainderl works according to ISO C 99 with IEC 60559],
           [gl_cv_func_remainderl_ieee],
           [
@@ -98,7 +99,13 @@ int main (int argc, char *argv[])
               ]])],
               [gl_cv_func_remainderl_ieee=yes],
               [gl_cv_func_remainderl_ieee=no],
-              [gl_cv_func_remainderl_ieee="guessing no"])
+              [case "$host_os" in
+                         # Guess yes on glibc systems.
+                 *-gnu*) gl_cv_func_remainderl_ieee="guessing yes" ;;
+                         # If we don't know, assume the worst.
+                 *)      gl_cv_func_remainderl_ieee="guessing no" ;;
+               esac
+              ])
             LIBS="$save_LIBS"
           ])
         case "$gl_cv_func_remainderl_ieee" in