patches/glibc/ports-2.10.1/290-undefine-__i686.patch
author Remy Bohmer <linux@bohmer.net>
Thu May 27 23:18:19 2010 +0200 (2010-05-27)
changeset 2060 51e4597b07fc
permissions -rw-r--r--
scripts: add option to strip all toolchain executables

To reduce filesizes of the toolchain and even improve build times
of projects to be build with this toolchain it is usefull to strip
the delivered toolchain executables. Since it is not likely that we
will debug the toolchain executables itself we do not need the
debug information inside the executables itself.

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