Cross build gcc failed.build=x86_64-freebsd target=x86_64-solaris

[papadave <papadavecn@gmail.com>]

Hello,
Recently I was trying to cross build a latest gcc on FreeBSD amd64 ,and
target is x86_64 Solaris. I built the binutils with following configure:

../configure --build=x86_64-unknown-freebsd12
--target=x86_64-unknown-solaris2.11 --prefix=/opt/toolchains
--sysconfdir=/etc --localstatedir=/var --libexecdir='${prefix}/lib'
--with-system-zlib --with-gmp=/usr/local --with-mpfr=/usr/local
--disable-rpath --enable-deterministic-archives --enable-nls --enable-gold
--enable-ld --enable-plugins

Later I configured the gcc in a new subdirectory as follows:

../gcc-10.2.0/configure --build=x86_64-unknown-freebsd12
--target=x86_64-unknown-solaris2.11 --disable-bootstrap
--enable-gnu-indirect-function --prefix=/opt/toolchains --sysconfdir=/etc
--localstatedir=/var --libexecdir='${prefix}/lib/gcc' --disable-rpath
--program-prefix=x86_64-unknown-solaris2.11- --program-suffix=-10.2
--with-gnu-as --with-gnu-ld --with-gmp=/usr/local --with-pkgversion=Rivoreo
--with-system-zlib --enable-languages=c,c++,objc,fortran,obj-c++,go
--enable-multilib

Then I start to run build. but it report error later:

# @multilib_dir@ is not really necessary, but sometimes it has
# more uses than just a directory name.
/bin/sh ../../../gcc-10.2.0/libgcc/../mkinstalldirs .
/usr/home/papadave/src/solaris-cross-build-gcc/gcc-10.2.0-build-x86_64-unknown-solaris2.11/./gcc/xgcc
-B/usr/home/papadave/src/solaris-cross-build-gcc/gcc-10.2.0-build-x86_64-unknown-solaris2.11/./gcc/
-B/opt/toolchains/x86_64-unknown-solaris2.11/bin/
-B/opt/toolchains/x86_64-unknown-solaris2.11/lib/ -isystem
/opt/toolchains/x86_64-unknown-solaris2.11/include -isystem
/opt/toolchains/x86_64-unknown-solaris2.11/sys-include    -O2  -g -O2
-DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE  -W -Wall -Wno-narrowing
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition  -isystem ./include  -fpic -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -shared
-nodefaultlibs -Wl,--soname=libgcc_s.so.1 -Wl,--version-script=libgcc.map
-o ./libgcc_s.so.1.tmp -g -O2 -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 _mulhc3_s.o _mulsc3_s.o
_muldc3_s.o _mulxc3_s.o _multc3_s.o _divhc3_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 _divmoddi4_s.o
_udivdi3_s.o _umoddi3_s.o _udivmoddi4_s.o _udiv_w_sdiv_s.o cpuinfo_s.o
sfp-exceptions_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 fixtfti_s.o fixunstfti_s.o floattitf_s.o floatuntitf_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 libgcc.a -lc
&& rm -f ./libgcc_s.so && if [ -f ./libgcc_s.so.1 ]; then mv -f
./libgcc_s.so.1 ./libgcc_s.so.1.backup; else true; fi && mv
./libgcc_s.so.1.tmp ./libgcc_s.so.1 && ln -s libgcc_s.so.1 ./libgcc_s.so
/opt/toolchains/x86_64-unknown-solaris2.11/bin/ld: skipping incompatible
/opt/toolchains/x86_64-unknown-solaris2.11/lib/libc.so when searching for
-lc
/opt/toolchains/x86_64-unknown-solaris2.11/bin/ld: i386 architecture of
input file `/opt/toolchains/x86_64-unknown-solaris2.11/lib/crti.o' is
incompatible with i386:x86-64 output
/opt/toolchains/x86_64-unknown-solaris2.11/bin/ld: i386 architecture of
input file `/opt/toolchains/x86_64-unknown-solaris2.11/lib/crtn.o' is
incompatible with i386:x86-64 output
collect2: error: ld returned 1 exit status
gmake[2]: *** [Makefile:994: libgcc_s.so] Error 1
gmake[2]: Leaving directory
'/usr/home/papadave/src/solaris-cross-build-gcc/gcc-10.2.0-build-x86_64-unknown-solaris2.11/x86_64-unknown-solaris2.11/libgcc'
gmake[1]: *** [Makefile:13433: all-target-libgcc] Error 2
gmake[1]: Leaving directory
'/usr/home/papadave/src/solaris-cross-build-gcc/gcc-10.2.0-build-x86_64-unknown-solaris2.11'
gmake: *** [Makefile:960: all] Error 2

So how should I fix it . Thanks.

Best regards,
papadave