Steel Bank Common Lisp

Update of /cvsroot/sbcl/sbcl/tools-for-build
In directory sc8-pr-cvs1:/tmp/cvs-serv12575/tools-for-build

Modified Files:
	Makefile 
Added Files:
	determine-endianness.c 
Log Message:
0.7.9.67:
	MIPSel build patch
	... write a noddy C program to determine target endianness
		(KLUDGE: assumes int is 32 bits)
	... use it in make-config.sh if we are building a MIPS target


--- NEW FILE: determine-endianness.c ---
/*
 * Test for the endianness of the target platform (needed for MIPS
 * support, at the very least, as systems with either endianness exist
 * in the wild).
 */

/*
 * This software is part of the SBCL system. See the README file for
 * more information.
 *
 * While most of SBCL is derived from the CMU CL system, many
 * utilities for the build process (like this one) were written from
 * scratch after the fork from CMU CL.
 * 
 * This software is in the public domain and is provided with
 * absolutely no warranty. See the COPYING and CREDITS files for
 * more information.
 */

#include <stdio.h>

int main (int argc, char *argv[]) {
    int foo = 0x20212223;
    char *bar = (char *) &foo;
    switch(*bar) {
    case ' ':
	/* Do nothing */
	break;
    case '#':
	printf(" :little-endian");
	break;
    default:
	/* FIXME: How do we do sane error processing in Unix?  This
	   program will be called from a script, in a manner somewhat
	   like:

	       tools-for-build/determine-endianness >> $ltf

           but what if we have a too-smart C compiler that actually
	   gets us down to this branch?  I suppose that if we have a C
	   compiler that is that smart, we're doomed to miscompile the
	   runtime anyway, so we won't get here.  Still, it might be
	   good to have "set -e" in the various scripts so that we can
	   exit with an error here and have it be caught by the build
	   tools.  -- CSR, 2002-11-24
	*/
	exit(1);
    }
    exit(0); 
}

Index: Makefile
===================================================================
RCS file: /cvsroot/sbcl/sbcl/tools-for-build/Makefile,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- Makefile	19 May 2001 01:03:02 -0000	1.2
+++ Makefile	25 Nov 2002 13:24:15 -0000	1.3
@@ -7,7 +7,7 @@
 # provided with absolutely no warranty. See the COPYING and CREDITS
 # files for more information.
 
-all: grovel_headers
+all: grovel_headers determine-endianness
 
 clean: 
-	rm -f *.o grovel_headers
+	rm -f *.o grovel_headers determine-endianness