mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-22 10:00:33 +00:00
32 lines
1.2 KiB
Plaintext
32 lines
1.2 KiB
Plaintext
|
# longdouble.m4 serial 2 (gettext-0.15)
|
||
|
|
dnl Copyright (C) 2002-2003, 2006 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 From Bruno Haible.
|
||
|
|
dnl Test whether the compiler supports the 'long double' type.
|
||
|
|
dnl Prerequisite: AC_PROG_CC
|
||
|
|
|
||
|
|
dnl This file is only needed in autoconf <= 2.59. Newer versions of autoconf
|
||
|
|
dnl have a macro AC_TYPE_LONG_DOUBLE with identical semantics.
|
||
|
|
|
||
|
|
AC_DEFUN([gt_TYPE_LONGDOUBLE],
|
||
|
|
[
|
||
|
|
AC_CACHE_CHECK([for long double], gt_cv_c_long_double,
|
||
|
|
[if test "$GCC" = yes; then
|
||
|
|
gt_cv_c_long_double=yes
|
||
|
|
else
|
||
|
|
AC_TRY_COMPILE([
|
||
|
|
/* The Stardent Vistra knows sizeof(long double), but does not support it. */
|
||
|
|
long double foo = 0.0;
|
||
|
|
/* On Ultrix 4.3 cc, long double is 4 and double is 8. */
|
||
|
|
int array [2*(sizeof(long double) >= sizeof(double)) - 1];
|
||
|
|
], ,
|
||
|
|
gt_cv_c_long_double=yes, gt_cv_c_long_double=no)
|
||
|
|
fi])
|
||
|
|
if test $gt_cv_c_long_double = yes; then
|
||
|
|
AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the 'long double' type.])
|
||
|
|
fi
|
||
|
|
])
|