You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1.4 KiB
42 lines
1.4 KiB
dnl -*- Autoconf -*-
|
|
dnl Copyright (C) 1993-2006 Free Software Foundation, Inc.
|
|
dnl This file is free software, distributed under the terms of the GNU
|
|
dnl General Public License. As a special exception to the GNU General
|
|
dnl Public License, this file may be distributed as part of a program
|
|
dnl that contains a configuration script generated by Autoconf, under
|
|
dnl the same distribution terms as the rest of that program.
|
|
|
|
dnl From Bruno Haible, Marcus Daniels, Sam Steingold, Paul Eggert.
|
|
|
|
AC_PREREQ(2.57)
|
|
|
|
AC_DEFUN([CL_LONGLONG],
|
|
[AC_CACHE_CHECK(for long long type, cl_cv_c_longlong, [
|
|
AC_TRY_RUN([
|
|
#include <stdlib.h>
|
|
int main()
|
|
{
|
|
/* long longs don't work right with gcc-2.7.2 on m68k */
|
|
/* long longs don't work right with gcc-2.7.2 on rs6000: avcall/tests.c gets
|
|
miscompiled. */
|
|
#if defined(__m68k__) || (defined(_IBMR2) || defined(__powerpc))
|
|
#if defined(__GNUC__) && (__GNUC__ == 2) && (__GNUC_MINOR__ <= 7)
|
|
exit(1);
|
|
#endif
|
|
#endif
|
|
{ long x = 944938507; long y = 737962842; long z = 162359677;
|
|
exit(!(((long long) x)*((long long) y)>>32 == z));
|
|
}
|
|
}],
|
|
cl_cv_c_longlong=yes, cl_cv_c_longlong=no, [
|
|
dnl When cross-compiling, use the test from gnulib.
|
|
AC_TRY_LINK([long long ll = 1LL; int i = 63;],
|
|
[long long llmax = (long long) -1;
|
|
return ll << i | ll >> i | llmax / ll | llmax % ll;],
|
|
cl_cv_c_longlong=yes,
|
|
cl_cv_c_longlong=no)])
|
|
])
|
|
if test $cl_cv_c_longlong = yes; then
|
|
AC_DEFINE(HAVE_LONGLONG,,[compiler supports the `long long' type])
|
|
fi
|
|
])
|