[Bug target/26146] New: Bootstrapping mainline on Solaris 10/x86 fails

["gcc-bugzilla at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

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  <jh@suse.cz>
            H.J. Lu  <hongjiu.lu@intel.com>
            Evandro Menezes <evandro.menezes@amd.com>

        * 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