Re: PPC build failure with undefined symbols __ashldi3, _restgpr_14_x, ...

["Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>]

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On 15.11.2013 15:35, Andrey Borzenkov wrote:
> В Fri, 15 Nov 2013 15:02:11 +0100
> Vladimir 'φ-coder/phcoder' Serbinenko <phcoder@gmail.com> пишет:
> 
>> On 15.11.2013 14:43, Andrey Borzenkov wrote:
>>> В Fri, 15 Nov 2013 13:33:07 +0100
>>> Vladimir 'φ-coder/phcoder' Serbinenko <phcoder@gmail.com> пишет:
>>>
>>>> On 15.11.2013 13:22, Andrey Borzenkov wrote:
>>>>> В Fri, 15 Nov 2013 12:00:49 +0100
>>>>> Vladimir 'φ-coder/phcoder' Serbinenko <phcoder@gmail.com> пишет:
>>>>>
>>>>>> On 15.11.2013 06:19, Andrey Borzenkov wrote:
>>>>>>> Sources at 6fcec439545c817fbc8e2f51c667a70037a34a76
>>>>>>>
>>>>>>> Building RPM for PPC (32 or 64 bits) I get
>>>>>>>
>>>>>>> [  187s] cat syminfo.lst | sort | gawk -f ../../grub-core/genmoddep.awk > moddep.lst || (rm -f moddep.lst; exit 1)
>>>>>>> [  187s] __ashldi3 in affs is not defined
>>>>>>> [  187s] _restgpr_14_x in affs is not defined
>>>>>>> [  187s] _restgpr_20_x in affs is not defined
>>>>>>> [  187s] _restgpr_25_x in affs is not defined
>>>>>>> [  187s] _restgpr_27_x in affs is not defined
>>>>>>> [  187s] _restgpr_28_x in affs is not defined
>>>>>>> [  187s] _restgpr_30_x in affs is not defined
>>>>>>> ...
>>>>>>>
>>>>>>> for a long list of them.
>>>>>>>
>>>>>>> Full build logs are available as
>>>>>>> https://build.opensuse.org/build/home:arvidjaar:grub2-next/openSUSE_Factory_PowerPC/ppc/grub2/_log
>>>>>>> https://build.opensuse.org/build/home:arvidjaar:grub2-next/openSUSE_Factory_PowerPC/ppc64/grub2/_log
>>>>>>>
>>>>>>> I do not myself have access to any PPC system nor any experience with
>>>>>>> them.
>>>>>>>
>>>>>> You don't have multilib installed.
>>>>>
>>>>> Could you elaborate? This is native build on PPC system. It has both 64
>>>>> and 32 bit of gcc and libgcc installed:
>>>>>
>>>>> [   12s] libgcc_s1-32bit-4.8.1_20130909-5.1    ########################################
>>>>> [   10s] libgcc_s1-4.8.1_20130909-5.1          ########################################
>>>>> [   17s] gcc48-4.8.1_20130909-5.1              ########################################
>>>>> [   17s] gcc48-32bit-4.8.1_20130909-5.1        ########################################
>>>>>
>>>>> This did build successfully until some recent changes (grub2 *is* part
>>>>> of openSUSE for PPC). I compared logs for x86 and ppc and both say
>>>>>
>>>>> [  119s] checking for __bswapsi2... no
>>>>> [  119s] checking for __bswapdi2... no
>>>>> [  119s] checking for __ashldi3... no
>>>>> [  120s] checking for __ashrdi3... no
>>>>> [  120s] checking for __lshrdi3... no
>>>>> [  120s] checking for __ucmpdi2... no
>>>>> [  120s] checking for _restgpr_14_x... no
>>>>>
>>>>> unfortunately I'm stuck here. For all I can tell it should either fail
>>>>> or succeed in both cases.
>>>>>
>>>> It should say all "no" on x86 and almost all "yes" on ppc. This output
>>>> indicates that link with libgcc failed. You can look how exactly the
>>>> test failed in config.log. Can you send me config.log ?
>>>
>>> Initially it failed due to missing -lc. After adding glibc-devel-static
>>> to buildrequires it now fails due to redefined abort:
>>>
>>> [  121s] configure:25260: checking for __bswapsi2
>>> [  121s] configure:25260: gcc -o conftest  -Os -Wall -W -Wshadow -Wold-style-definition -Wpointer-arith -Wundef -Wextra -Wattributes -Wchar-subscripts -Wcomment -Wdeprecated-declarations -Wdisabled-optimization -Wdiv-by-zero -Wendif-labels -Wfloat-equal -Wformat-extra-args -Wformat-security -Wformat-y2k -Wimplicit -Wimplicit-function-declaration -Wimplicit-int -Winit-self -Wint-to-pointer-cast -Winvalid-pch -Wmain -Wmissing-braces -Wmissing-field-initializers -Wmissing-format-attribute -Wmultichar -Wnonnull -Woverflow -Wparentheses -Wpointer-arith -Wpointer-to-int-cast -Wreturn-type -Wsequence-point -Wshadow -Wsign-compare -Wstrict-aliasing -Wswitch -Wtrigraphs -Wundef -Wunknown-pragmas -Wunused -Wunused-function -Wunused-label -Wunused-parameter -Wunused-value  -Wunused-variable -Wvariadic-macros -Wvolatile-register-var -Wwrite-strings -Wnested-externs -Wstrict-prototypes -Wpointer-sign -g -Wredundant-decls -Wmissing-prototypes -Wmissing-declarations -Wcast-align -m32 -freg-struc
t-
>> return -fno-dwarf2-cfi-asm -fno-asynchronous-unwind-tables -fno-stack-protector -Wl,--defsym,abort=main  -Wall -W -I$(top_srcdir)/include -I$(top_builddir)/include  -DGRUB_MACHINE_IEEE1275=1 -DGRUB_MACHINE=POWERPC_IEEE1275 -DGRUB_TARGET_CPU_POWERPC=1 -m32 -static -m32 conftest.c -lgcc >&5
>>> [  121s] conftest.c:385:1: warning: function declaration isn't a prototype [-Wstrict-prototypes]
>>> [  121s]  char __bswapsi2 ();
>>> [  121s] conftest.c:385:1: warning: function declaration isn't a prototype [-Wstrict-prototypes]
>>> [  121s]  char __bswapsi2 ();
>>> [  121s]  ^
>>> [  121s] /usr/lib/gcc/powerpc64-suse-linux/4.8/../../../../lib/libc.a(abort.o): In function `abort':
>>> [  121s] /home/abuild/rpmbuild/BUILD/glibc-2.18/stdlib/abort.c:51: multiple definition of `abort'
>>> [  121s] collect2: error: ld returned 1 exit status
>>>
>> Try this:
>> diff --git a/configure.ac b/configure.ac
>> index 2c4f019..cd96588 100644
>> --- a/configure.ac
>> +++ b/configure.ac
>> @@ -821,6 +821,8 @@ CFLAGS="$TARGET_CFLAGS -Wl,--defsym,abort=main"
>>  fi
>>  fi
>>
>> +CFLAGS="$CFLAGS -nostdlib"
>> +
>>  # Check for libgcc symbols
>>  AC_CHECK_FUNCS(__bswapsi2 __bswapdi2 __ashldi3 __ashrdi3 __lshrdi3
>> __ucmpdi2 _restgpr_14_x)
>>
>>
>>>
>>> -static is added by grub2.spec. I'm not sure, why - is it really needed?
>>>
> 
> Actually removing explicit TARGET_LDFLAGS=-static in grub2.spec fixed
> it. I now wonder why it was added in the first place.
> 
-static shouldn't create problems. Adding -nostdlib like I proposed
should solve the problem.
> 
> 
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