[Bug ada/50589] New: [4.7] Ada bootstrap failure on sparc-linux

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50589

             Bug #: 50589
           Summary: [4.7] Ada bootstrap failure on sparc-linux
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mikpe@it.uu.se


I'm attempting to bootstrap a plain sparc-linux gcc on sparc64-linux, by
passing --build=sparc-unknown-linux --host=sparc-unknown-linux
--target=sparc-unknown-linux --enable-targets=all --with-cpu=v8
--enable-multilib to configure.  The build fails however in Ada:

/mnt/scratch/objdir47/./gcc/xgcc -B/mnt/scratch/objdir47/./gcc/
-B/mnt/scratch/install47/sparc-unknown-linux/bin/
-B/mnt/scratch/install47/sparc-unknown-linux/lib/ -isystem
/mnt/scratch/install47/sparc-unknown-linux/include -isystem
/mnt/scratch/install47/sparc-unknown-linux/sys-include    -c -g -O2  -fPIC  -W
-Wall -gnatpg   s-linux.ads -o s-linux.o
s-linux.ads:38:16: warning: unit "C" is not referenced
make[7]: *** [s-linux.o] Error 1
make[7]: *** Waiting for unfinished jobs....
make[7]: Leaving directory `/mnt/scratch/objdir47/gcc/ada/rts'
make[6]: *** [gnatlib] Error 2
make[6]: Leaving directory `/mnt/scratch/objdir47/gcc/ada'
make[5]: *** [gnatlib-shared-default] Error 2
make[5]: Leaving directory `/mnt/scratch/objdir47/gcc/ada'
make[4]: *** [gnatlib-shared-dual] Error 2
make[4]: Leaving directory `/mnt/scratch/objdir47/gcc/ada'
make[3]: *** [gnatlib-shared] Error 2
make[3]: Leaving directory `/mnt/scratch/objdir47/gcc/ada'
make[2]: *** [gnatlib-shared] Error 2
make[2]: Leaving directory `/mnt/scratch/objdir47/sparc-unknown-linux/libada'
make[1]: *** [all-target-libada] Error 2
make[1]: Leaving directory `/mnt/scratch/objdir47'
make: *** [bootstrap] Error 2

The complete configuration is:
/mnt/scratch/gcc-4.7-20111001/configure --prefix=/mnt/scratch/install47
--with-gmp=/home/mikpe/pkgs/linux-sparc64/gmp-5.0.2
--with-mpfr=/home/mikpe/pkgs/linux-sparc64/mpfr-3.0.1
--with-mpc=/home/mikpe/pkgs/linux-sparc64/mpc-0.9 --disable-plugin
--disable-lto --disable-nls --enable-threads=posix --enable-checking=release
--disable-libmudflap --enable-languages=c,ada
--disable-build-poststage1-with-cxx --build=sparc-unknown-linux
--host=sparc-unknown-linux --target=sparc-unknown-linux --enable-targets=all
--with-cpu=v8 --enable-multilib

The reason I'm overriding build/host/target is that a recent change on trunk
broke the ability to build a sparc64-linux gcc that defaults to -m32, see
PR50354.