llvm dev - Aug 2010 - [LLVMdev] Problem cross-compiling llvm-gcc for AIX-PowerPC

Compiling llvm-gcc on an x86 machine with 
--target=powerpc-ibm-aix5.1.0.0, I get the following error:

make \
           CFLAGS="-g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes 
-Wmissing-prototypes -pedantic -Wno-long-long -Wno-variadic-macros 
-Wno-overlength-strings -Wold-style-definition 
-Wmissing-format-attribute  " \
           CONFIG_H="config.h  auto-host.h 
../../llvm-gcc-4.2-2.7.source/gcc/../include/ansidecl.h" \
           MAKEOVERRIDES= \
           -f libgcc.mk all
make[3]: Entering directory `/localhome/simmon12/aix-cross/obj/gcc'
/localhome/simmon12/aix-cross/obj/./gcc/xgcc 
-B/localhome/simmon12/aix-cross/obj/./gcc/ 
-B/localhome/simmon12/aix-cross/obj/../install/powerpc-ibm-aix5.1.0.0/bin/ 
-B/localhome/simmon12/aix-cross/obj/../install/powerpc-ibm-aix5.1.0.0/lib/ 
-isystem 
/localhome/simmon12/aix-cross/obj/../install/powerpc-ibm-aix5.1.0.0/include 
-isystem 
/localhome/simmon12/aix-cross/obj/../install/powerpc-ibm-aix5.1.0.0/sys-include
-O2  -O2 -g -O2  -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE   -W -Wall 
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes 
-Wold-style-definition  -isystem ./include  -mlong-double-128 -g 
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc 
-I. -I. -I../../llvm-gcc-4.2-2.7.source/gcc 
-I../../llvm-gcc-4.2-2.7.source/gcc/. 
-I../../llvm-gcc-4.2-2.7.source/gcc/../include 
-I../../llvm-gcc-4.2-2.7.source/gcc/../libcpp/include  
-I../../llvm-gcc-4.2-2.7.source/gcc/../libdecnumber -I../libdecnumber 
-I/localhome/simmon12/llvm-makefilebuild/include -DL_muldi3  -c 
../../llvm-gcc-4.2-2.7.source/gcc/libgcc2.c -o libgcc/./_muldi3.o
/localhome/simmon12/aix-cross/obj/./gcc/as: line 2: exec: -u: invalid option

Is there anything else I should be doing to build a cross-compiler to 
generate LLVM bitcode for AIX?  My ultimate goal here is just to get a 
compiler which can generate llvm bitcode I can manipulate and then run 
through the C backend to generate source I can then compile on AIX.  
Unfortunately, I must run the code on AIX on POWER.  How should I best 
approach this problem?

--Patrick

-- 
If I'm not here, I've gone out to find myself.  If I get back before I
return, please keep me here.

Hello
> ../../llvm-gcc-4.2-2.7.source/gcc/libgcc2.c -o libgcc/./_muldi3.o
> /localhome/simmon12/aix-cross/obj/./gcc/as: line 2: exec: -u: invalid
option
Have you built & installed cross-binutils for your target?

-- 
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University

No, I hadn't.  There's no special LLVM version of binutils, right?  You 
just download binutils and compile it for a different target?  I've 
looked up some stuff and I think I need a cross-glibc as well.  Is it 
necessary to install AIX headers somewhere, too?  Also, is there 
anything LLVM-specific necessary for cross-compiling llvm-gcc?

I'm sorry if this is off-topic.  If there's nothing LLVM-specific about 
cross-compiling llvm-gcc, I'll direct future questions to a GCC list.

--Patrick

On 08/24/2010 09:44 AM, Anton Korobeynikov wrote:
> Hello
>
>
>> ../../llvm-gcc-4.2-2.7.source/gcc/libgcc2.c -o libgcc/./_muldi3.o
>> /localhome/simmon12/aix-cross/obj/./gcc/as: line 2: exec: -u: invalid
option
>>
> Have you built&  installed cross-binutils for your target?
>
>

Hello, Patrick
> I'm sorry if this is off-topic.  If there's nothing LLVM-specific
about
> cross-compiling llvm-gcc, I'll direct future questions to a GCC list.
wrt cross-compilation llvm-gcc is pretty much same as gcc. So, you
need to have cross-tools available.
The only difference is the magic --enable-llvm switch :)

-- 
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University