Trying to bootstrap mainline as of 20060206 on i386-pc-solaris2.10 with gas 2.15 and no options to select a specific target fails when trying to build the amd64 libgcc multilib:
/vol/gcc/obj/gcc-4.2.0-20060206/10-gcc-gas/./gcc/xgcc -B/vol/gcc/obj/gcc-4.2.0-20060206/10-gcc-gas/./gcc/ -B/vol/gcc/share/i386-pc-solaris2.10/bin/ -B/vol/gcc/share/i386-pc-solaris2.10/lib/ -isystem /vol/gcc/share/i386-pc-solaris2.10/include -isystem /vol/gcc/share/i386-pc-solaris2.10/sys-include -O2 -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -I. -Iamd64 -I/vol/gcc/src/gcc-dist/gcc -I/vol/gcc/src/gcc-dist/gcc/amd64 -I/vol/gcc/src/gcc-dist/gcc/../include -I/vol/gcc/src/gcc-dist/gcc/../libcpp/include -I/vol/gnu/obj/gmp-4.1.3/mpfr -I/vol/gnu/obj/gmp-4.1.3 -I/vol/gcc/src/gcc-dist/gcc/../libdecnumber -I../libdecnumber -m64 \ -c /vol/gcc/src/gcc-dist/gcc/config/i386/gmon-sol2.c -o amd64/gmon.o /vol/gcc/src/gcc-dist/gcc/config/i386/gmon-sol2.c:1: error: CPU you selected does not support x86-64 instruction set make[5]: *** [amd64/gmon.o] Error 1 This is due to this patch: 2006-01-19 Jan Hubicka <[EMAIL PROTECTED]> H.J. Lu <[EMAIL PROTECTED]> Evandro Menezes <[EMAIL PROTECTED]> * invoke.texi (generic): Document (i686) Update. * config.gcc: Make x86_64-* and i686-* default to generic tunning. Adding -v to the xgcc invocation above, I see /vol/gcc/obj/gcc-4.2.0-20060206/10-gcc-gas/./gcc/cc1 -E -quiet -v -I. -Iamd64 -I/vol/gcc/src/gcc-dist/gcc -I/vol/gcc/src/gcc-dist/gcc/amd64 -I/vol/gcc/src/gcc-dist/gcc/../include -I/vol/gcc/src/gcc-dist/gcc/../libcpp/include -I/vol/gnu/obj/gmp-4.1.3/mpfr -I/vol/gnu/obj/gmp-4.1.3 -I/vol/gcc/src/gcc-dist/gcc/../libdecnumber -I../libdecnumber -imultilib amd64 -iprefix /amnt/figaro/volumes/obj-gcc/gcc/obj.sol86/gcc-4.2.0-20060206/10-gcc-gas/gcc/../lib/gcc/i386-pc-solaris2.10/4.2.0/ -isystem /vol/gcc/obj/gcc-4.2.0-20060206/10-gcc-gas/./gcc/include -DIN_GCC -isystem /vol/gcc/share/i386-pc-solaris2.10/include -isystem /vol/gcc/share/i386-pc-solaris2.10/sys-include -isystem ./include /vol/gcc/src/gcc-dist/gcc/config/i386/gmon-sol2.c -m64 -mtune=i386 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -fworking-directory -O2 -O2 -fpch-preprocess -o gmon-sol2.i So an implicit -mtune=i386 is passed, which conflicts with -m64 as observed. Environment: System: SunOS australien 5.10 Generic_118844-19 i86pc i386 i86pc Architecture: i86pc host: i386-pc-solaris2.10 build: i386-pc-solaris2.10 target: i386-pc-solaris2.10 configured with: /vol/gcc/src/gcc-dist/configure --prefix=/vol/gcc --with-local-prefix=/vol/gcc --disable-nls --with-gnu-as --with-as=/usr/sfw/bin/gas --with-gmp-dir=/vol/gnu/obj/gmp-4.1.3 --with-mpfr-dir=/vol/gnu/obj/gmp-4.1.3/mpfr --enable-languages=c,c++,fortran,java,objc,ada --disable-libmudflap How-To-Repeat: Bootstrap mainline as described above. ------- Comment #1 from ro at techfak dot uni-bielefeld dot de 2006-02-07 01:10 ------- Fix: As a workaround, I can configure for i386-sun-solaris2.10; this bootstrap is currently in stage2 and thus isn't affected. -- Summary: Bootstrapping mainline on Solaris 10/x86 fails Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: ro at techfak dot uni-bielefeld dot de GCC build triplet: i386-pc-solaris2.10 GCC host triplet: i386-pc-solaris2.10 GCC target triplet: i386-pc-solaris2.10 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26146