[Bug binutils/19153] New: binutils configured for --target=powerpc-ibm-aix7.1.0.0 has wrong default bfd-target for 'ar'

[hvr at gnu dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=19153

            Bug ID: 19153
           Summary: binutils configured for
                    --target=powerpc-ibm-aix7.1.0.0 has wrong default
                    bfd-target for 'ar'
           Product: binutils
           Version: 2.25
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: hvr at gnu dot org
  Target Milestone: ---

When configuring binutils-2.25.1 for cross-compilation with
`--target=powerpc-ibm-aix7.1.0.0`, the resulting `./binutils/ar` generates
archives for the wrong bfd-target which causes problems when bootstrapping GCC
targetting AIX (as `libgcc.a` is then created in the wrong format).



> $ echo 'int foo(void) { return 23; }' > foo.c
> $ powerpc-ibm-aix7.1.0.0-gcc -c foo.c 
> $ file foo.o 
> foo.o: executable (RISC System/6000 V3.1) or obj module not stripped
> $ powerpc-ibm-aix7.1.0.0-ar rv libfoo.a foo.o
> powerpc-ibm-aix7.1.0.0-ar: creating libfoo.a
> a - foo.o
> $ file libfoo.a 
> libfoo.a: current ar archive
> $ echo 'int main() { return 0; }' > main.c
> $ powerpc-ibm-aix7.1.0.0-gcc main.c libfoo.a 
> collect2: fatal error: libfoo.a: cannot open as COFF file
> compilation terminated.

However, if I explicitly use `--target=aixcoff-rs6000`, it works as expected:

> $ powerpc-ibm-aix7.1.0.0-ar rv libfoo.a foo.o --target=aixcoff-rs6000
> powerpc-ibm-aix7.1.0.0-ar: creating libfoo.a
> a - foo.o
> $ file libfoo.a 
> libfoo.a: archive (big format)
> $ powerpc-ibm-aix7.1.0.0-gcc main.c libfoo.a 
> $ file a.out 
> a.out: executable (RISC System/6000 V3.1) or obj module not stripped

IMO, `--target=aixcoff-rs6000` should be the default bfd-target when binutils
is configured for `powerpc-ibm-aix7.1.0.0`

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