[Bug target/28551] New: libgcc.a being generated in improper format for powerpc-eabi cross

["spkelly at andrew dot cmu dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

2006-07-31 under KDE 3.4.0
Overview:
When compiling trivial code with a gcc4.1.1 i686 to powerpc-eabi cross 
compiler and specifying -msim, I am getting a "could not read symbols: 
File format not recognized" error with libgcc.a.

Details:
Upon further research and experimentation of my problem case in <A
HREF=http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28133>28133</A> I'm still
running into what may be a compiler issue.
I'm currently trying to make a c cross-compiler from i686 to powerpc-eabi to
test code in PSIM against a powerpc development board.  I am using the usual
steps-

1. build binutils (2.15, which is the most recent version I can build on the
shared academic machine I'm using without building a whole new native gcc)
2. build a stripped-down gcc (4.1.1, the most recent as of the start of the
project)
3. compile newlib (1.14.0)
4. build full gcc

1 and 2 go fine, but when I try to build anything with the stripped-down gcc I
get libgcc.a(eabi.o)undefined symbol errors (see below) when I don't specify a
target (eg -msim, -mads, ...) and File Format Not Recognized errors (see below)
when I use -msim.  The same problem appears to be <A
HREF=http://sources.redhat.com/ml/gdb/2005-11/msg00639.html>documented by Barry
Wealand</A> for gcc3.4.4.  I will continue to poke and investigate my case to
see if it's just something stupid in my configuration, but even if the issue is
only lack of -msim and an inadvertent library mistargeting, I've seen a few
other reported cases where lack of a -mtarget has been a non-obvious roadblock,
so it might be worth setting up a default target for embedded cross-compilation
that is compatible with the default libgcc.a format.

-----
output without -msim:

powerpc-unknown-eabi-gcc arithtest.c
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/../../../../powerpc-unknown-eabi/bin/ld:
warning: cannot find entry symbol _start; defaulting to 01800074
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.text+0xc4):
In function `__eabi':
/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:232: undefined reference to
`__init'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x8):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:146:
undefined reference to `__SDATA_START__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0xc):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:148:
undefined reference to `__SBSS_END__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x14):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:150:
undefined reference to `__SDATA2_START__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x18):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:151:
undefined reference to `__SBSS2_END__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x1c):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:152:
undefined reference to `__GOT_START__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x28):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:155:
undefined reference to `__GOT_END__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x2c):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:156:
undefined reference to `__GOT2_START__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x30):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:157:
undefined reference to `__GOT2_END__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x34):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:158:
undefined reference to `__FIXUP_START__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x38):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:159:
undefined reference to `__FIXUP_END__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x3c):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:163:
undefined reference to `__CTOR_LIST__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x40):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:164:
undefined reference to `__CTOR_END__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x44):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:165:
undefined reference to `__DTOR_LIST__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x48):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:166:
undefined reference to `__DTOR_END__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x4c):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:167:
undefined reference to `__EXCEPT_START__'
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a(eabi.o)(.got2+0x50):/scratch/spkelly/gcc-4.1.1/build/gcc/eabi.S:171:
undefined reference to `__EXCEPT_END__'
collect2: ld returned 1 exit status

-----
output with -msim:

powerpc-unknown-eabi-gcc -msim arithtest.c
/scratch/spkelly/ppcbin/lib/gcc/powerpc-unknown-eabi/4.1.1/libgcc.a: could not
read symbols: File format not recognized
collect2: ld returned 1 exit status

-----
arithtest.c:
int main(){
        int a,b,c,d;
        a=5;
        b=7;
        c=a+b;
        d=a*b;
        return 0;
}


-- 
           Summary: libgcc.a being generated in improper format for powerpc-
                    eabi cross
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: spkelly at andrew dot cmu dot edu
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: powerpc-*-eabi
GCC target triplet: powerpc-*-eabi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28551