yann@434: If gcc is configured to generate i686 code or better by default (like
yann@434: when using the --with-arch=pentium3 configure option), then the __i686
yann@434: macro will always be defined automatically and thus screw up the
yann@434: compilation of some .S files.
yann@434: 
yann@434: http://bugs.gentoo.org/131108
yann@434: http://sourceware.org/ml/libc-alpha/2006-04/msg00090.html
yann@434: 
yann@434: 2006-04-25  Mike Frysinger  <vapier@gentoo.org>
yann@434: 
yann@434: 	* sysdeps/i386/sysdep.h (__i686): Undefine.
yann@434: 
yann@434: Index: glibc-2.4/sysdeps/unix/sysv/linux/i386/sysdep.h
yann@434: ===================================================================
yann@434: --- glibc-2.4/sysdeps/unix/sysv/linux/i386/sysdep.h	(revision 1469)
yann@434: +++ glibc-2.4/sysdeps/unix/sysv/linux/i386/sysdep.h	(working copy)
yann@434: @@ -29,6 +29,10 @@
yann@434:  #include <dl-sysdep.h>
yann@434:  #include <tls.h>
yann@434: 
yann@434: +#if defined __i686 && defined __ASSEMBLER__
yann@434: +#undef __i686
yann@434: +#define __i686 __i686
yann@434: +#endif
yann@434: 
yann@434:  /* For Linux we can use the system call table in the header file
yann@434:  	/usr/include/asm/unistd.h
yann@434: Index: glibc-2.4/nptl/sysdeps/pthread/pt-initfini.c
yann@434: ===================================================================
yann@434: --- glibc-2.4/nptl/sysdeps/pthread/pt-initfini.c	(revision 1469)
yann@434: +++ glibc-2.4/nptl/sysdeps/pthread/pt-initfini.c	(working copy)
yann@434: @@ -45,6 +45,11 @@
yann@434:  /* Embed an #include to pull in the alignment and .end directives. */
yann@434:  asm ("\n#include \"defs.h\"");
yann@434: 
yann@434: +asm ("\n#if defined __i686 && defined __ASSEMBLER__");
yann@434: +asm ("\n#undef __i686");
yann@434: +asm ("\n#define __i686 __i686");
yann@434: +asm ("\n#endif");
yann@434: +
yann@434:  /* The initial common code ends here. */
yann@434:  asm ("\n/*@HEADER_ENDS*/");
yann@434: