1 If gcc is configured to generate i686 code or better by default (like
2 when using the --with-arch=pentium3 configure option), then the __i686
3 macro will always be defined automatically and thus screw up the
4 compilation of some .S files.
5 http://bugs.gentoo.org/131108
6 http://sourceware.org/ml/libc-alpha/2006-04/msg00090.html
8 2006-04-25 Mike Frysinger <vapier@gentoo.org>
10 * sysdeps/i386/sysdep.h (__i686): Undefine.
12 diff -durN glibc-2.10.1.orig/nptl/sysdeps/pthread/pt-initfini.c glibc-2.10.1/nptl/sysdeps/pthread/pt-initfini.c
13 --- glibc-2.10.1.orig/nptl/sysdeps/pthread/pt-initfini.c 2007-06-17 20:02:01.000000000 +0200
14 +++ glibc-2.10.1/nptl/sysdeps/pthread/pt-initfini.c 2009-11-13 00:50:22.000000000 +0100
16 /* Embed an #include to pull in the alignment and .end directives. */
17 asm ("\n#include \"defs.h\"");
19 +/* Embed an #include to pull in asm settings. */
20 +asm ("\n#ifdef __i686__\n#include <sysdep.h>\n#endif");
22 /* The initial common code ends here. */
23 asm ("\n/*@HEADER_ENDS*/");
25 diff -durN glibc-2.10.1.orig/sysdeps/i386/sysdep.h glibc-2.10.1/sysdeps/i386/sysdep.h
26 --- glibc-2.10.1.orig/sysdeps/i386/sysdep.h 2006-10-28 08:44:03.000000000 +0200
27 +++ glibc-2.10.1/sysdeps/i386/sysdep.h 2009-11-13 00:50:22.000000000 +0100
29 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
33 + * When building for i686 targets or better, gcc automatically defines
34 + * '__i686' to '1' for us which causes trouble when using section names
35 + * like '__i686.get_pc_thunk.reg'. Since we check for __i686__ in the
36 + * code, killing '__i686' shouldn't be a problem.
40 #include <sysdeps/generic/sysdep.h>