Annotation of embedaddon/libiconv/m4/endian.m4, revision 1.1.1.1
1.1 misho 1: dnl Copyright (C) 1993-2003 Free Software Foundation, Inc.
2: dnl This file is free software, distributed under the terms of the GNU
3: dnl General Public License. As a special exception to the GNU General
4: dnl Public License, this file may be distributed as part of a program
5: dnl that contains a configuration script generated by Autoconf, under
6: dnl the same distribution terms as the rest of that program.
7:
8: dnl From Bruno Haible, Marcus Daniels.
9:
10: AC_PREREQ(2.13)
11:
12: AC_DEFUN([CL_WORDS_LITTLEENDIAN],
13: [AC_CACHE_CHECK(byte ordering, cl_cv_sys_endian, [
14: AC_TRY_RUN([int main () {
15: /* Are we little or big endian? From Harbison&Steele. */
16: union
17: {
18: long l;
19: char c[sizeof (long)];
20: } u;
21: u.l = 1;
22: exit (u.c[0] == 1);
23: }],
24: cl_cv_sys_endian="big endian",
25: cl_cv_sys_endian="little endian",
26: : # must guess the endianness
27: )
28: if test -z "$cl_cv_sys_endian"; then
29: AC_EGREP_CPP(yes,[#if defined(m68k) || defined(__m68k__) || defined(mc68000) || defined(mc68020) || defined(__mc68020__) || defined(sparc) || defined(__sparc__) || defined(MIPSEB) || defined(__MIPSEB__) || defined(hppa) || defined(__hppa) || defined(m88000) || defined(__m88k__)
30: yes
31: #endif
32: ], cl_cv_sys_endian="big endian")
33: fi
34: if test -z "$cl_cv_sys_endian"; then
35: AC_EGREP_CPP(yes,[#if defined(i386) || defined(__i386) || defined(__i386__) || defined(_I386) || defined(MIPSEL) || defined(__MIPSEL__) || defined(__alpha)
36: yes
37: #endif
38: ], cl_cv_sys_endian="little endian")
39: fi
40: if test -z "$cl_cv_sys_endian"; then
41: cl_cv_sys_endian="guessing little endian"
42: fi
43: ])
44: case "$cl_cv_sys_endian" in
45: *little*)
46: AC_DEFINE(WORDS_LITTLEENDIAN, 1,
47: [Define if the machine's byte ordering is little endian.]) ;;
48: *big*) ;;
49: esac
50: ])
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>