configure gcc

[Eduardo Martinez Pardeiro]

I configure gcc-3.0 experimental in a powerpc-apple-darwin8.11 machine
with this options:

../gcc/configure ..prefix=`pwd` --enable-languages=c

I have the correct version of mpfr and gmp,but when i do make i obtain
this error:

s.o darwin-tramp_s.o ppc64-fp_s.o darwin-64_s.o darwin-ldouble_s.o
darwin-world_s.o unwind-dw2_s.o unwind-dw2-fde-darwin_s.o
unwind-sjlj_s.o unwind-c_s.o darwin-fallback_s.o emutls_s.o -lc
unknown option: -macosx_version_min
ld64 failed: file not found: 10.4
collect2: ld returned 1 exit status
make[5]: *** [libgcc_s.dylib] Error 1
make[4]: *** [multi-do] Error 1
make[3]: *** [all-multi] Error 2
make[2]: *** [all-stage1-target-libgcc] Error 2
make[1]: *** [stage1-bubble] Error 2
make: *** [all] Error 2

How I can solve it?