Hi,
It seems clang is almost unusuable on old macppc boxes such as my G3
B&W, which doesn't have Altivec support.
This compiles OK:
int main() { return 0; }
but this crashes:
/* Same thing, but with a comment. */
int main() { return 0; }
with the following error:
Stack dump:
0. Program arguments:
/usr/local/bin/clang -cc1 -triple powerpc-unknown-openbsd4.9 -S
-disable-free -disable-llvm-verifier -main-file-name test2.c
-mrelocation-model static -mdisable-fp-elim -mconstructor-aliases
-target-linker-version 2.15 -momit-leaf-frame-pointer -resource-dir
/usr/local/bin/../lib/clang/2.9 -ferror-limit 19 -fmessage-length 0
-fno-signed-char -fgnu-runtime -fdiagnostics-show-option -o
/tmp/cc-hLpenZ.s -x c test2.c
1. <unknown> parser at unknown
location clang: error: unable to execute command: Illegal instruction
(core dumped) clang: error: clang frontend command failed due to
signal 1 (use -v to see invocation)
I see there this a patch in the port [1] which undef's __SSE2__ so I
guess the same thing should be done for __ALTIVEC__. Unfortunately,
it wasn't possible for me to test the patch, since it would take forever
to compile on such an old box. But I guess the issue is here.
I'd gladly test any new package built with this patch on my G3, if it
helps.
Tsomi.
[1] patch-tools_clang_lib_Lex_Lexer_cpp
Index: devel/llvm/patches/patch-tools_clang_lib_Lex_Lexer_cpp
===================================================================
RCS file: /cvs/ports/devel/llvm/patches/patch-tools_clang_lib_Lex_Lexer_cpp,v
retrieving revision 1.6
diff -u -p -r1.6 patch-tools_clang_lib_Lex_Lexer_cpp
--- devel/llvm/patches/patch-tools_clang_lib_Lex_Lexer_cpp 13 Jan 2011
00:15:50 -0000 1.6
+++ devel/llvm/patches/patch-tools_clang_lib_Lex_Lexer_cpp 26 Jun 2011
12:41:36 -0000
@@ -1,10 +1,11 @@
$OpenBSD: patch-tools_clang_lib_Lex_Lexer_cpp,v 1.6 2011/01/13 00:15:50 jeremy
Exp $
---- tools/clang/lib/Lex/Lexer.cpp.orig Tue Aug 31 09:42:00 2010
-+++ tools/clang/lib/Lex/Lexer.cpp Thu Jan 6 11:26:07 2011
-@@ -1334,6 +1334,7 @@ static bool isEndOfBlockCommentWithEscapedNewLine(cons
+--- tools/clang/lib/Lex/Lexer.cpp.orig Mon Feb 28 03:37:51 2011
++++ tools/clang/lib/Lex/Lexer.cpp Sun Jun 26 14:39:38 2011
+@@ -1516,6 +1516,8 @@ static bool isEndOfBlockCommentWithEscapedNewLine(cons
return true;
}
++#undef __ALTIVEC__
+#undef __SSE2__
#ifdef __SSE2__
#include <emmintrin.h>
