[LLVMdev] Compiling llvm-gcc in linux/ppc

[Nicolas Geoffray]

Hi Chris,

Chris Lattner wrote:
> On Tue, 22 May 2007, Nicolas Geoffray wrote:
>   
>> OK, seems like there were unused TARGET_MACHO macros that would protect
>> these errors from happening. I made some modifications that add #if
>> TARGET_MACHO.
>>     
>
> ok.  If you send a patch in that adds these, I would be happy to apply it.
>
>   

I will when I'll figure out why it sometimes doesn't work to add these
and I have
to remove the specific instructions from the file (even an #if 0 does
not work -- maybe
there's a script somewhere that misbehaves)
>> Now the error is a linkage problem:
>>
>> /home/varth/project/llvm-cvs/llvm-gcc4/obj/gcc/xgcc: symbol lookup
>> error: /home/varth/project/llvm-cvs/llvm-gcc4/obj/gcc/libgcc_s.so.1:
>> undefined symbol: __thenan_sf
>>
>> And even if I force the definition of thenan_sf with
>> const fp_number_type __thenan_sf = { CLASS_SNAN, 0, 0, {(fractype) 0} };
>>
>> I still get the error.
>>     
>
> Unfortunately, I really don't know.  I assume this is supposed to be 
> coming from gcc/config/fp-bit.c, but I don't know how any of this stuff 
> works.
>
>   

Do you know who did the APPLE_LOCAL changes? Maybe he can help.

Nicolas
> -Chris
>
>
>   
>> Cheers,
>> Nicolas
>>
>> Nicolas Geoffray wrote:
>>     
>>> Chris Lattner wrote:
>>>
>>>       
>>>> This looks like you're compiling llvm-gcc3, which is quite dead by now.
>>>> Please follow these instructions:
>>>> http://llvm.org/docs/CFEBuildInstrs.html
>>>>
>>>>
>>>>
>>>>         
>>> Oups, sorry for that. Here is the error message with the latest svn version:
>>>
>>> gcc -c   -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes
>>> -Wmissing-prototypes -pedantic -Wno-long-long -Wno-variadic-macros
>>> -Wold-style-definition    -DHAVE_CONFIG_H -DENABLE_LLVM
>>> -D__STDC_LIMIT_MACROS   -I. -I. -I../../trunk/gcc -I../../trunk/gcc/.
>>> -I../../trunk/gcc/../include -I../../trunk/gcc/../libcpp/include
>>> -I/home/varth/project/llvm-cvs/llvm/include
>>> -I/usr/local/home/varth/project/llvm-cvs/llvm/include
>>> ../../trunk/gcc/stor-layout.c -o stor-layout.o
>>> ../../trunk/gcc/stor-layout.c:450:25: error: macro "ADJUST_FIELD_ALIGN"
>>> passed 3 arguments, but takes just 2
>>> ../../trunk/gcc/stor-layout.c: In function 'layout_decl':
>>> ../../trunk/gcc/stor-layout.c:449: error: 'ADJUST_FIELD_ALIGN'
>>> undeclared (first use in this function)
>>> ../../trunk/gcc/stor-layout.c:449: error: (Each undeclared identifier is
>>> reported only once
>>> ../../trunk/gcc/stor-layout.c:449: error: for each function it appears in.)
>>> ../../trunk/gcc/stor-layout.c:711:43: error: macro "ADJUST_FIELD_ALIGN"
>>> passed 3 arguments, but takes just 2
>>> ../../trunk/gcc/stor-layout.c: In function 'update_alignment_for_field':
>>> ../../trunk/gcc/stor-layout.c:708: error: 'ADJUST_FIELD_ALIGN'
>>> undeclared (first use in this function)
>>> ../../trunk/gcc/stor-layout.c:760:41: error: macro "ADJUST_FIELD_ALIGN"
>>> passed 3 arguments, but takes just 2
>>> ../../trunk/gcc/stor-layout.c:994:44: error: macro "ADJUST_FIELD_ALIGN"
>>> passed 3 arguments, but takes just 2
>>> ../../trunk/gcc/stor-layout.c: In function 'place_field':
>>> ../../trunk/gcc/stor-layout.c:991: error: 'ADJUST_FIELD_ALIGN'
>>> undeclared (first use in this function)
>>> ../../trunk/gcc/stor-layout.c:1031:44: error: macro "ADJUST_FIELD_ALIGN"
>>> passed 3 arguments, but takes just 2
>>> make[1]: *** [stor-layout.o] Error 1
>>> make[1]: Leaving directory `/home/varth/project/llvm-cvs/llvm-gcc4/obj/gcc'
>>> make: *** [all-gcc] Error 2
>>>
>>>
>>> I looked a bit at the source, and the gcc/config/darwin.h declares a
>>> ADJUST_FIELD_ALIGN with two arguments whereas all other back-ends that
>>> declare ADJUST_FIELD_ALIGN have only two arguments. And it seems that
>>> stor-layout.c assumes that if we have ADJUST_FIELD_ALIGN defined, then
>>> we're on darwin.
>>>
>>> Nicolas
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>
>>>       
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>>     
>
> -Chris
>
>