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extensions: port better to MINUX 3, HP-UX, autoheader 2.62
[gnulib.git]
/
m4
/
modff.m4
diff --git
a/m4/modff.m4
b/m4/modff.m4
index
2d4fc72
..
9813b61
100644
(file)
--- a/
m4/modff.m4
+++ b/
m4/modff.m4
@@
-1,5
+1,5
@@
-# modff.m4 serial
4
-dnl Copyright (C) 2011-201
2
Free Software Foundation, Inc.
+# modff.m4 serial
5
+dnl Copyright (C) 2011-201
3
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.
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_MODFF],
:
m4_ifdef([gl_FUNC_MODFF_IEEE], [
if test $gl_modff_required = ieee && test $REPLACE_MODFF = 0; then
:
m4_ifdef([gl_FUNC_MODFF_IEEE], [
if test $gl_modff_required = ieee && test $REPLACE_MODFF = 0; then
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether modff works according to ISO C 99 with IEC 60559],
[gl_cv_func_modff_ieee],
[
AC_CACHE_CHECK([whether modff works according to ISO C 99 with IEC 60559],
[gl_cv_func_modff_ieee],
[
@@
-67,7
+68,13
@@
int main (int argc, char *argv[])
]])],
[gl_cv_func_modff_ieee=yes],
[gl_cv_func_modff_ieee=no],
]])],
[gl_cv_func_modff_ieee=yes],
[gl_cv_func_modff_ieee=no],
- [gl_cv_func_modff_ieee="guessing no"])
+ [case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_modff_ieee="guessing yes" ;;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_modff_ieee="guessing no" ;;
+ esac
+ ])
LIBS="$save_LIBS"
])
case "$gl_cv_func_modff_ieee" in
LIBS="$save_LIBS"
])
case "$gl_cv_func_modff_ieee" in