llvm dev - May 2011 - [LLVMdev] x86 cross compiler for ppc fails to build

Hi All,

I try to build a cross-compiler that compiles for powerpc but runs on my 
pentium.

As a base I used the arm cross-compiler script but changed:
CROSS_HOST="x86_64-unknown-linux-gnu"
CROSS_TARGET="powerpc-linux"
CROSS_MARCH="750"

LLVM is building ok, but the second step: building llvm-gcc fails with a 
rather strange error which I appended to the end of this e-mail.
Am I doing something wrong or is this a bug?

Thanks,
  Maarten Faddegon

--- the error: ---

/llvm-gcc-4.2-2.9.source/gcc/../include 
-I/local/maartenf/opt/src/all_llvm_2_9/buildroot_ppc/src/llvm-gcc-4.2-2.9.source/gcc/../libcpp/include
-I/local/maartenf/opt/src/all_llvm_2_9/buildroot_ppc/src/llvm-gcc-4.2-2.9.source/gcc/../libdecnumber
-I../libdecnumber 
-I/local/maartenf/opt/bin/llvm29/powerpc-linux/llvm/include  -g0 
-finhibit-size-directive -fno-inline-functions -fno-exceptions 
-fno-zero-initialized-in-bss -fno-toplevel-reorder -Dinhibit_libc 
-msdata=none \
          -c 
/local/maartenf/opt/src/all_llvm_2_9/buildroot_ppc/src/llvm-gcc-4.2-2.9.source/gcc/crtstuff.c
-DCRT_BEGIN \
          -o crtbegin.o
/tmp/ccNdqsm6.s: Assembler messages:
/tmp/ccNdqsm6.s:11: Error: syntax error; found `(' but expected `,'
/tmp/ccNdqsm6.s:11: Error: junk at end of line: `(completed.2521.b)'
/tmp/ccNdqsm6.s:12: Error: junk at end of line: `(30)'
/tmp/ccNdqsm6.s:15: Error: syntax error; found `(' but expected `,'
/tmp/ccNdqsm6.s:15: Error: junk at end of line: `(p.2519)'
/tmp/ccNdqsm6.s:16: Error: junk at end of line: `(29)'
/tmp/ccNdqsm6.s:22: Error: junk at end of line: `(29)'
/tmp/ccNdqsm6.s:25: Error: junk at end of line: `(29)'
/tmp/ccNdqsm6.s:30: Error: syntax error; found `(' but expected `,'
/tmp/ccNdqsm6.s:30: Error: junk at end of line: `(__deregister_frame_info)'
/tmp/ccNdqsm6.s:31: Error: junk at end of line: `(3)'
/tmp/ccNdqsm6.s:34: Error: syntax error; found `(' but expected `,'
/tmp/ccNdqsm6.s:34: Error: junk at end of line: `(__EH_FRAME_BEGIN__)'
/tmp/ccNdqsm6.s:35: Error: junk at end of line: `(3)'
/tmp/ccNdqsm6.s:39: Error: junk at end of line: `(30)'
/tmp/ccNdqsm6.s:76: Error: syntax error; found `(' but expected `,'
/tmp/ccNdqsm6.s:76: Error: junk at end of line: `(__register_frame_info)'
/tmp/ccNdqsm6.s:77: Error: junk at end of line: `(3)'
/tmp/ccNdqsm6.s:80: Error: syntax error; found `(' but expected `,'
/tmp/ccNdqsm6.s:80: Error: junk at end of line: `(__EH_FRAME_BEGIN__)'
/tmp/ccNdqsm6.s:81: Error: syntax error; found `(' but expected `,'
/tmp/ccNdqsm6.s:81: Error: junk at end of line: `(object.2537)'
/tmp/ccNdqsm6.s:82: Error: junk at end of line: `(3)'
/tmp/ccNdqsm6.s:83: Error: junk at end of line: `(4)'
/tmp/ccNdqsm6.s:86: Error: syntax error; found `(' but expected `,'
/tmp/ccNdqsm6.s:86: Error: junk at end of line: `(__JCR_LIST__)'
/tmp/ccNdqsm6.s:87: Error: junk at end of line: `(3)'
/tmp/ccNdqsm6.s:90: Error: syntax error; found `(' but expected `,'
/tmp/ccNdqsm6.s:90: Error: junk at end of line: `(_Jv_RegisterClasses)'
/tmp/ccNdqsm6.s:91: Error: junk at end of line: `(4)'
/tmp/ccNdqsm6.s:96: Error: junk at end of line: `(3)'
make[2]: *** [crtbegin.o] Error 1

On May 17, 2011, at 9:47 AM, Maarten Faddegon wrote:
> LLVM is building ok, but the second step: building llvm-gcc fails with a 
> rather strange error which I appended to the end of this e-mail.
> Am I doing something wrong or is this a bug?
Looks like you don't have an assembler for your target installed that
llvm-gcc can find.

-eric
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I try to build a cross powerpc compiler, but llvm-gcc fails.

Eric Christopher wrote:
> Looks like you don't have an assembler for your target installed that 
> llvm-gcc can find.
I have binutils installed for powerpc and verified they are working with 
a simple hello world program.

$ powerpc-750-linux-gnu-as --version
GNU assembler 2.16.1

However, the xgcc build during the seems to generate instructions that 
are not understood by the assembler.
I forced xgcc to output assembly and tried to use the assembler on the 
result manually.
There are instructions like this one "lis 30, ha16(completed.5554.b)" 
which are not understood apparently?
Should this instruction be understood by the assembler?

Thanks,
  Maarten


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