http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53423
--- Comment #2 from kiko <keith_otis at hotmail dot com> 2012-05-20 20:10:29 UTC --- did make distclean, removed --with-boot-ldflags=-m64 \ --with-stage1-ldflags=-m64 \ from configure, re-ran configure and build still fails: /bin/bash /home/keith/src/gcc-4.7.0/libgcc/../mkinstalldirs 32 mkdir 32 /home/keith/src/gcc-obj/./gcc/xgcc -B/home/keith/src/gcc-obj/./gcc/ -B/usr/local/x86_64-pc-solaris2.10/bin/ -B/usr/local/x86_64-pc-solaris2.10/lib/ -isystem /usr/local/x86_64-pc-solaris2.10/include -isystem /usr/local/x86_64-pc-solaris2.10/sys-include -O2 -g -m64 -DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fpic -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -shared -nodefaultlibs -Wl,-h,libgcc_s.so.1 -Wl,-z,text -Wl,-z,defs -Wl,-M,libgcc.map -o 32/libgcc_s.so.1.tmp -g -m64 -m32 -B./ _muldi3_s.o _negdi2_s.o _lshrdi3_s.o _ashldi3_s.o _ashrdi3_s.o _cmpdi2_s.o _ucmpdi2_s.o _clear_cache_s.o _trampoline_s.o __main_s.o _absvsi2_s.o _absvdi2_s.o _addvsi3_s.o _addvdi3_s.o _subvsi3_s.o _subvdi3_s.o _mulvsi3_s.o _mulvdi3_s.o _negvsi2_s.o _negvdi2_s.o _ctors_s.o _ffssi2_s.o _ffsdi2_s.o _clz_s.o _clzsi2_s.o _clzdi2_s.o _ctzsi2_s.o _ctzdi2_s.o _popcount_tab_s.o _popcountsi2_s.o _popcountdi2_s.o _paritysi2_s.o _paritydi2_s.o _powisf2_s.o _powidf2_s.o _powixf2_s.o _powitf2_s.o _mulsc3_s.o _muldc3_s.o _mulxc3_s.o _multc3_s.o _divsc3_s.o _divdc3_s.o _divxc3_s.o _divtc3_s.o _bswapsi2_s.o _bswapdi2_s.o _clrsbsi2_s.o _clrsbdi2_s.o _fixunssfsi_s.o _fixunsdfsi_s.o _fixunsxfsi_s.o _fixsfdi_s.o _fixdfdi_s.o _fixxfdi_s.o _fixunssfdi_s.o _fixunsdfdi_s.o _fixunsxfdi_s.o _floatdisf_s.o _floatdidf_s.o _floatdixf_s.o _floatundisf_s.o _floatundidf_s.o _floatundixf_s.o _divdi3_s.o _moddi3_s.o _udivdi3_s.o _umoddi3_s.o _udiv_w_sdiv_s.o _udivmoddi4_s.o tf-signs_s.o addtf3_s.o divtf3_s.o eqtf2_s.o getf2_s.o letf2_s.o multf3_s.o negtf2_s.o subtf3_s.o unordtf2_s.o fixtfsi_s.o fixunstfsi_s.o floatsitf_s.o floatunsitf_s.o fixtfdi_s.o fixunstfdi_s.o floatditf_s.o floatunditf_s.o extendsftf2_s.o extenddftf2_s.o extendxftf2_s.o trunctfsf2_s.o trunctfdf2_s.o trunctfxf2_s.o enable-execute-stack_s.o unwind-dw2_s.o unwind-dw2-fde-dip_s.o unwind-sjlj_s.o unwind-c_s.o emutls_s.o -lc && rm -f 32/libgcc_s.so && if [ -f 32/libgcc_s.so.1 ]; then mv -f 32/libgcc_s.so.1 32/libgcc_s.so.1.backup; else true; fi && mv 32/libgcc_s.so.1.tmp 32/libgcc_s.so.1 && ln -s libgcc_s.so.1 32/libgcc_s.so ld: fatal: file /home/keith/src/gcc-obj/./gcc/32/crtbegin.o: wrong ELF class: ELFCLASS64 ld: fatal: file processing errors. No output written to 32/libgcc_s.so.1.tmp collect2: error: ld returned 1 exit status make[5]: *** [libgcc_s.so] Error 1 make[5]: Leaving directory `/export/home/keith/src/gcc-obj/x86_64-pc-solaris2.10/32/libgcc' make[4]: *** [multi-do] Error 1 make[4]: Leaving directory `/export/home/keith/src/gcc-obj/x86_64-pc-solaris2.10/libgcc' make[3]: *** [all-multi] Error 2 make[3]: Leaving directory `/export/home/keith/src/gcc-obj/x86_64-pc-solaris2.10/libgcc' make[2]: *** [all-stage1-target-libgcc] Error 2 make[2]: Leaving directory `/export/home/keith/src/gcc-obj' make[1]: *** [stage1-bubble] Error 2 make[1]: Leaving directory `/export/home/keith/src/gcc-obj' make: *** [bootstrap] Error 2