crosstool-ng/patches/glibc/ports-2.10.1/290-undefine-__i686.patch
Yann E. MORIN" 4b173045e9 libc/glibc: add 2.10.1
Woo... It seems the glibc guys finally decided that tarballs
were not deprecated, in fact.

The patchset was vampirised from Gentoo (kudos, guys!), and
applies to glibc+ports, so that's why it's been added as a
patchset against ports, not against glibc.
2009-11-13 21:37:18 +01:00

43 lines
1.7 KiB
Diff

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