[LLVMdev] Compiling llvm-gcc in linux/ppc

[Nicolas Geoffray]

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.

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.

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
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