1.0.19.30: muffle code deletion note from destructuring-bind
[sbcl/eslaughter.git] / tools-for-build / determine-endianness.c
blobb59d2ed573876eb988da5e1b0ba23c47f3a0d891
1 /*
2 * Test for the endianness of the target platform (needed for MIPS
3 * support, at the very least, as systems with either endianness exist
4 * in the wild).
5 */
7 /*
8 * This software is part of the SBCL system. See the README file for
9 * more information.
11 * While most of SBCL is derived from the CMU CL system, many
12 * utilities for the build process (like this one) were written from
13 * scratch after the fork from CMU CL.
15 * This software is in the public domain and is provided with
16 * absolutely no warranty. See the COPYING and CREDITS files for
17 * more information.
20 #include <stdio.h>
21 #include <stdlib.h>
23 int main (int argc, char *argv[]) {
24 int foo = 0x20212223;
25 char *bar = (char *) &foo;
26 switch(*bar) {
27 case ' ':
28 /* Do nothing */
29 break;
30 case '#':
31 printf(" :little-endian");
32 break;
33 default:
34 /* FIXME: How do we do sane error processing in Unix? This
35 program will be called from a script, in a manner somewhat
36 like:
38 tools-for-build/determine-endianness >> $ltf
40 but what if we have a too-smart C compiler that actually
41 gets us down to this branch? I suppose that if we have a C
42 compiler that is that smart, we're doomed to miscompile the
43 runtime anyway, so we won't get here. Still, it might be
44 good to have "set -e" in the various scripts so that we can
45 exit with an error here and have it be caught by the build
46 tools. -- CSR, 2002-11-24
48 exit(1);
50 exit(0);