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Date: Tue, 31 Mar 2015 02:42:00 -0000
Message-ID: <CAMe9rOqFg7BoY7Kge8dOHCGA=cvtR8TA5rMCW7qjToe1L3_X9w@mail.gmail.com>
Subject: Re: PATCH] PR target/65612: Multiversioning doesn't work with DSO nor PIE
From: "H.J. Lu" <hjl.tools@gmail.com>
To: Jack Howarth <howarth.at.gcc@gmail.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>, Uros Bizjak <ubizjak@gmail.com>
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On Mon, Mar 30, 2015 at 7:08 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> On Mon, Mar 30, 2015 at 5:53 PM, Jack Howarth <howarth.at.gcc@gmail.com> wrote:
>> HJ,
>>      This patch breaks the bootstrap on targets like darwin which
>> don't build libgcc_nonshared.a...
>>
>> if test -z "$objects"; then \
>>   echo 'int __libgcc_eh_dummy;' > eh_dummy.c; \
>>   /sw/src/fink.build/gcc5-5.0.0-1/darwin_objdir/./gcc/xgcc
>> -B/sw/src/fink.build/gcc5-5.0.0-1/darwin_objdir/./gcc/
>> -B/sw/lib/gcc5/x86_64-apple-darwin14.3.0/bin/
>> -B/sw/lib/gcc5/x86_64-apple-darwin14.3.0/lib/ -isystem
>> /sw/lib/gcc5/x86_64-apple-darwin14.3.0/include -isystem
>> /sw/lib/gcc5/x86_64-apple-darwin14.3.0/sys-include    -g -O2 -m32 -O2
>> -g -O2 -DIN_GCC    -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual
>> -Wno-format -Wstrict-prototypes -Wmissing-prototypes
>> -Wold-style-definition  -isystem ./include   -pipe -fno-common -g
>> -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector   -pipe
>> -fno-common -I. -I. -I../../.././gcc
>> -I../../../../gcc-5-20150330/libgcc
>> -I../../../../gcc-5-20150330/libgcc/.
>> -I../../../../gcc-5-20150330/libgcc/../gcc
>> -I../../../../gcc-5-20150330/libgcc/../include  -DHAVE_CC_TLS
>> -DUSE_EMUTLS -fvisibility=hidden -DHIDE_EXPORTS -c eh_dummy.c \
>>      -o eh_dummy.o; \
>>   objects=eh_dummy.o; \
>> fi; \
>> ar  rc libgcc_nonshared.a $objects
>> ar: cpuinfo.o: No such file or directory
>> Makefile:905: recipe for target 'libgcc_nonshared.a' failed
>> make[5]: *** [libgcc_nonshared.a] Error 1
>> make[5]: Leaving directory
>> '/sw/src/fink.build/gcc5-5.0.0-1/darwin_objdir/x86_64-apple-darwin14.3.0/i386/libgcc'
>> Makefile:1168: recipe for target 'multi-do' failed
>> make[4]: *** [multi-do] Error 1
>> make[4]: Leaving directory
>> '/sw/src/fink.build/gcc5-5.0.0-1/darwin_objdir/x86_64-apple-darwin14.3.0/libgcc'
>> Makefile:117: recipe for target 'all-multi' failed
>> make[3]: *** [all-multi] Error 2
>> make[3]: Leaving directory
>> '/sw/src/fink.build/gcc5-5.0.0-1/darwin_objdir/x86_64-apple-darwin14.3.0/libgcc'
>> Makefile:14820: recipe for target 'all-stage1-target-libgcc' failed
>> make[2]: *** [all-stage1-target-libgcc] Error 2
>> make[2]: Leaving directory '/sw/src/fink.build/gcc5-5.0.0-1/darwin_objdir'
>> Makefile:20760: recipe for target 'stage1-bubble' failed
>> make[1]: *** [stage1-bubble] Error 2
>> make[1]: Leaving directory '/sw/src/fink.build/gcc5-5.0.0-1/darwin_objdir'
>> Makefile:21064: recipe for target 'bootstrap' failed
>> make: *** [bootstrap] Error 2
>>
>>           Jack
>>
>
> This one works.  I need to add $(LIB2ADDNONSHARED) $(LIB2ADDSHARED)
> to iter-items and handle duplicated items in them.
>

There is no regression on Linux/x86-64.

-- 
H.J.