diff options
Diffstat (limited to 'm4/longdouble.m4')
-rw-r--r-- | m4/longdouble.m4 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/m4/longdouble.m4 b/m4/longdouble.m4 new file mode 100644 index 00000000..1333d2f5 --- /dev/null +++ b/m4/longdouble.m4 | |||
@@ -0,0 +1,30 @@ | |||
1 | # 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 | ]) | ||