Cross-assembling for AIX/PowerPC64

[Jonas Maebe]

On 25/07/14 09:36, Tristan Gingold wrote:
>
> On 25 Jul 2014, at 09:22, Jonas Maebe <jonas.maebe@elis.ugent.be> wrote:
>
>> Hi,
>>
>> I have configured binutils 2.24 using the following configure command (on OS X 10.9):
>>
>>   ../configure --target=powerpc-ibm-aix53 --with-sysroot --disable-werror
>>
>> The resulting assembler can assemble for AIX/PowerPC (32 bit) fine. However, when I try to assemble for AIX/PowerPC64 with this command:
>>
>>   powerpc-ibm-aix53-as -a64 -u -o ../../rtl/units/powerpc64-aix/ctypes.o ../../rtl/units/powerpc64-aix/ctypes.s -mpwr5
>>
>> Then I get the following error:
>>
>>   Assembler messages:
>>   Fatal error: selected target format 'aixcoff64-rs6000' unknown
>
> There is a discrepancy between bfd and gas.  Try to configure for powerpc-ibm-aix or hack gas/config/tc-ppc.c

I had to hack gas/config/tc-ppc.c (manually add a "#define TE_AIX5"; it 
seems this should normally be set by gas/config/te-aix5.h, but this file 
doesn't appear to be included anywhere), because configuring for 
powerpc-ibm-aix resulted in linker errors:

   powerpc-ibm-aix-ld -bpT:0x10000000 -bpD:0x20000000 -btextro 
-binitfini:P.BUG_.._main:FPC_LIB_EXIT  -G -L. -o shr_64.o link.res -b64 
-bE:linksyms.fpc

  /Data/dev/aix/aixroot/lib/crt0_64.o: file not recognized: File format 
not recognized (that's a crt0_64.o from an AIX 5.3 machine).

Configuring that way also meant that ar's -X64_32 option was not 
supported (presumably such support was only added in AIX 5.x).

In any case, with the hack it does work. Thanks!


Jonas

PS: shall I file a bug report?