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Annotation of /trunk/xmms/gentoo-m4/longdouble.m4

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Revision 153 - (hide annotations) (download)
Tue May 8 20:52:56 2007 UTC (17 years, 1 month ago) by niro
File size: 1216 byte(s)
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1 niro 153 # longdouble.m4 serial 1 (gettext-0.12)
2     dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
3     dnl This file is free software, distributed under the terms of the GNU
4     dnl General Public License. As a special exception to the GNU General
5     dnl Public License, this file may be distributed as part of a program
6     dnl that contains a configuration script generated by Autoconf, under
7     dnl the same distribution terms as the rest of that program.
8    
9     dnl From Bruno Haible.
10     dnl Test whether the compiler supports the 'long double' type.
11     dnl Prerequisite: AC_PROG_CC
12    
13     AC_DEFUN([gt_TYPE_LONGDOUBLE],
14     [
15     AC_CACHE_CHECK([for long double], gt_cv_c_long_double,
16     [if test "$GCC" = yes; then
17     gt_cv_c_long_double=yes
18     else
19     AC_TRY_COMPILE([
20     /* The Stardent Vistra knows sizeof(long double), but does not support it. */
21     long double foo = 0.0;
22     /* On Ultrix 4.3 cc, long double is 4 and double is 8. */
23     int array [2*(sizeof(long double) >= sizeof(double)) - 1];
24     ], ,
25     gt_cv_c_long_double=yes, gt_cv_c_long_double=no)
26     fi])
27     if test $gt_cv_c_long_double = yes; then
28     AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the 'long double' type.])
29     fi
30     ])