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gettimeofday: port recent C++ fix to Emacs
[gnulib.git]
/
m4
/
hypotl.m4
diff --git
a/m4/hypotl.m4
b/m4/hypotl.m4
index
7af4cb0
..
ce92bec
100644
(file)
--- a/
m4/hypotl.m4
+++ b/
m4/hypotl.m4
@@
-1,5
+1,5
@@
-# hypotl.m4 serial
4
-dnl Copyright (C) 2012 Free Software Foundation, Inc.
+# hypotl.m4 serial
5
+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.
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.
@@
-33,6
+33,7
@@
AC_DEFUN([gl_FUNC_HYPOTL],
m4_ifdef([gl_FUNC_HYPOTL_IEEE], [
if test $gl_hypotl_required = ieee && test $REPLACE_HYPOTL = 0; then
m4_ifdef([gl_FUNC_HYPOTL_IEEE], [
if test $gl_hypotl_required = ieee && test $REPLACE_HYPOTL = 0; then
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CACHE_CHECK([whether hypotl works according to ISO C 99 with IEC 60559],
[gl_cv_func_hypotl_ieee],
[
AC_CACHE_CHECK([whether hypotl works according to ISO C 99 with IEC 60559],
[gl_cv_func_hypotl_ieee],
[
@@
-69,7
+70,13
@@
int main (int argc, char *argv[])
]])],
[gl_cv_func_hypotl_ieee=yes],
[gl_cv_func_hypotl_ieee=no],
]])],
[gl_cv_func_hypotl_ieee=yes],
[gl_cv_func_hypotl_ieee=no],
- [gl_cv_func_hypotl_ieee="guessing no"])
+ [case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_hypotl_ieee="guessing yes" ;;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_hypotl_ieee="guessing no" ;;
+ esac
+ ])
LIBS="$save_LIBS"
])
case "$gl_cv_func_hypotl_ieee" in
LIBS="$save_LIBS"
])
case "$gl_cv_func_hypotl_ieee" in