[OE-core] [yocto] [RFT] upcoming glibc 2.21 and gcc 4.9 upgrade

[Khem Raj]

> On Feb 20, 2015, at 4:27 PM, Peter Urbanec <openembedded-devel at urbanec.net> wrote:
> 
> On 21/02/15 05:03, Richard Purdie wrote:
>> On Mon, 2015-02-02 at 02:02 -0800, Khem Raj wrote:
>>> I have put together upgrade to gcc 4.9.2 as well as glibc 2.21 (
> ...
>> For info, I've now merged the glibc part of this change now too.
> 
> It looks like the new glibc turns all gcc warnings into errors. That does not seem to work too well in all cases:

you seem to be overriding default selected optimization to use -Os instead of -O2, with 2.21 glibc is now using -Werror by default which is a good thing
but then not all combinations have been tested out so when you override the default opt level then please add -Wno-error as well. May be I should just send a patch to detect this usecase


> 
> | mipsel-oe-linux-gcc -mel -mabi=32 -mhard-float --sysroot=/home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/sysroots/inihdp-tcbootstrap pthread_equal.c -c -std=gnu99 -fgnu89-inline  -Os -Wall -Werror -Winline -Wno-error=undef -Wundef -Wwrite-strings -feliminate-unused-debug-types -fmerge-all-constants -frounding-math -g -pipe -Wstrict-prototypes   -fPIC        -I../include -I/home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/work/mips32el-oe-linux/glibc/glibc-2.21-r0/build-mipsel-oe-linux/nptl  -I/home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/work/mips32el-oe-linux/glibc/glibc-2.21-r0/build-mipsel-oe-linux  -I../sysdeps/unix/sysv/linux/mips/mips32/fpu  -I../sysdeps/unix/sysv/linux/mips/mips32  -I../sysdeps/unix/sysv/linux/mips  -I../sysdeps/mips/nptl  -I../sysdeps/unix/sysv/linux/include -I../sysdeps/unix/sysv/linux  -I../sysdeps/nptl  -I../sysdeps/pthread  -I../sysdeps/gnu  -I../!
> sysdeps/un
> ix/inet  -I../sysdeps/unix/sysv  -I../sysdeps/unix/mips/mips32  -I../sysdeps/unix/mips  -I../sysdeps/unix  -I../sysdeps/posix  -I../sysdeps/mips/mips32/fpu  -I../sysdeps/mips/mips32  -I../sysdeps/mips/ieee754  -I../sysdeps/mips/soft-fp  -I../sysdeps/mips/include -I../sysdeps/mips  -I../sysdeps/ieee754/flt-32  -I../sysdeps/ieee754/dbl-64  -I../sysdeps/wordsize-32  -I../sysdeps/mips/fpu  -I../sysdeps/ieee754  -I../sysdeps/generic  -I.. -I../libio -I. -nostdinc -isystem /home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/sysroots/x86_64-linux/usr/lib/mipsel-oe-linux.gcc-cross-initial-mipsel/gcc/mipsel-oe-linux/4.9.2/include -isystem /home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/sysroots/x86_64-linux/usr/lib/mipsel-oe-linux.gcc-cross-initial-mipsel/gcc/mipsel-oe-linux/4.9.2/include-fixed -isystem /home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/sysroots/inihdp/usr/include  -D_LIBC_REE!
> NTRANT -in
> clude /home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/work/mips32el-oe-linux/glibc/glibc-2.21-r0/build-mipsel-oe-linux/libc-modules.h -DMODULE_NAME=libpthread -include ../include/libc-symbols.h  -DPIC -DSHARED     -o /home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/work/mips32el-oe-linux/glibc/glibc-2.21-r0/build-mipsel-oe-linux/nptl/pthread_equal.os -MD -MP -MF /home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/work/mips32el-oe-linux/glibc/glibc-2.21-r0/build-mipsel-oe-linux/nptl/pthread_equal.os.dt -MT /home/peteru/Source/T3/build-enviroment-core-24/builds/beyonwiz/inihdp/tmp-glibc/work/mips32el-oe-linux/glibc/glibc-2.21-r0/build-mipsel-oe-linux/nptl/pthread_equal.os
> | In file included from allocatestack.c:30:0,
> |                  from pthread_create.c:55:
> | allocatestack.c: In function 'stack_list_add':
> | ../include/list.h:58:1: error: inlining failed in call to 'list_add': call is unlikely and code size would grow [-Werror=inline]
> |  list_add (list_t *newp, list_t *head)
> |  ^
> | In file included from pthread_create.c:55:0:
> | allocatestack.c:159:3: error: called from here [-Werror=inline]
> |    list_add (elem, list);
> |    ^
>