yann@1625: If gcc is configured to generate i686 code or better by default (like 
yann@1625: when using the --with-arch=pentium3 configure option), then the __i686
yann@1625: macro will always be defined automatically and thus screw up the
yann@1625: compilation of some .S files.
yann@1625: http://bugs.gentoo.org/131108
yann@1625: http://sourceware.org/ml/libc-alpha/2006-04/msg00090.html
yann@1625: 
yann@1625: 2006-04-25  Mike Frysinger  <vapier@gentoo.org>
yann@1625: 
yann@1625: 	* sysdeps/i386/sysdep.h (__i686): Undefine.
yann@1625: 
yann@1625: diff -durN glibc-2.10.1.orig/nptl/sysdeps/pthread/pt-initfini.c glibc-2.10.1/nptl/sysdeps/pthread/pt-initfini.c
yann@1625: --- glibc-2.10.1.orig/nptl/sysdeps/pthread/pt-initfini.c	2007-06-17 20:02:01.000000000 +0200
yann@1625: +++ glibc-2.10.1/nptl/sysdeps/pthread/pt-initfini.c	2009-11-13 00:50:22.000000000 +0100
yann@1625: @@ -45,6 +45,9 @@
yann@1625:  /* Embed an #include to pull in the alignment and .end directives. */
yann@1625:  asm ("\n#include \"defs.h\"");
yann@1625:  
yann@1625: +/* Embed an #include to pull in asm settings. */
yann@1625: +asm ("\n#ifdef __i686__\n#include <sysdep.h>\n#endif");
yann@1625: +
yann@1625:  /* The initial common code ends here. */
yann@1625:  asm ("\n/*@HEADER_ENDS*/");
yann@1625:  
yann@1625: diff -durN glibc-2.10.1.orig/sysdeps/i386/sysdep.h glibc-2.10.1/sysdeps/i386/sysdep.h
yann@1625: --- glibc-2.10.1.orig/sysdeps/i386/sysdep.h	2006-10-28 08:44:03.000000000 +0200
yann@1625: +++ glibc-2.10.1/sysdeps/i386/sysdep.h	2009-11-13 00:50:22.000000000 +0100
yann@1625: @@ -18,6 +18,14 @@
yann@1625:     Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
yann@1625:     02111-1307 USA.  */
yann@1625:  
yann@1625: +/*
yann@1625: + * When building for i686 targets or better, gcc automatically defines
yann@1625: + * '__i686' to '1' for us which causes trouble when using section names
yann@1625: + * like '__i686.get_pc_thunk.reg'.  Since we check for __i686__ in the
yann@1625: + * code, killing '__i686' shouldn't be a problem.
yann@1625: + */
yann@1625: +#undef __i686
yann@1625: +
yann@1625:  #include <sysdeps/generic/sysdep.h>
yann@1625:  
yann@1625:  #ifdef	__ASSEMBLER__