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patches/gcc/4.3.3/180-superh-default-multilib.patch
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Sat Jan 04 01:02:57 2014 +0100 (2014-01-04)
changeset 3271 c65dc9b98841
permissions -rw-r--r--
cc/gcc: diable libsanitizer without NPTL

gcc-4.8 comes with a new library to sanitise memory access:
- heap-, stack-, and global-buffer overflow, use-after-free
- data-races between threads

This library requires some _np parts of the API, which are not
implemented in the (old) LinuxThreads, which is still available
in uClibc.

Since NPTL requires a i486 or above, i386 are stuck with using LT,
which precludes building the libsanitizer.

Disable libsanitizer, a bit like libatomic is.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Niels Penneman <niels@penneman.org> 
     1 Original patch from: ../4.3.2/180-superh-default-multilib.patch

     2 

     3 -= BEGIN original header =-

     4 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/53_all_gcc4-superh-default-multilib.patch

     5 The gcc-3.x toolchains would contain all the targets by default.  With gcc-4,

     6 you have to actually list out the multilibs you want or you will end up with

     7 just one when using targets like 'sh4-linux-gnu'.

     8 

     9 The resulting toolchain can't even build a kernel as the kernel needs to build

    10 with the nofpu flag to be sure that no fpu ops are generated.

    11 

    12 Here we restore the gcc-3.x behavior; the additional overhead of building all

    13 of these multilibs by default is negligible.

    14 

    15 http://bugs.gentoo.org/140205

    16 

    17 -= END original header =-

    18 

    19 diff -durN gcc-4.3.3.orig/gcc/config.gcc gcc-4.3.3/gcc/config.gcc

    20 --- gcc-4.3.3.orig/gcc/config.gcc	2008-11-20 18:09:53.000000000 +0100

    21 +++ gcc-4.3.3/gcc/config.gcc	2009-01-27 22:19:32.000000000 +0100

    22 @@ -2275,7 +2275,7 @@

    23  	if test x${sh_multilibs} = x ; then

    24  		case ${target} in

    25  		sh64-superh-linux* | \

    26 -		sh[1234]*)	sh_multilibs=${sh_cpu_target} ;;

    27 +		sh[1234]*)	sh_multilibs=`cd ${srcdir}/config/sh ; echo t-mlib-sh[1-4]* | sed 's:t-mlib-sh:,m:g;s: ::g'` ;;

    28  		sh64* | sh5*)	sh_multilibs=m5-32media,m5-32media-nofpu,m5-compact,m5-compact-nofpu,m5-64media,m5-64media-nofpu ;;

    29  		sh-superh-*)	sh_multilibs=m4,m4-single,m4-single-only,m4-nofpu ;;

    30  		sh*-*-linux*)	sh_multilibs=m1,m3e,m4 ;;
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