gcc-4.6 build failures

[Peter Jeremy]

I'm seeing identical build failures for lang/gcc and lang/gcc46 on sparc64
FreeBSD 10.0-CURRENT (sb1500) #9 r238864M: Tue Jul 31 20:08:11 EST 2012
Can anyone suggest a fix?  The lang/gcc failure is:

checking for iconv... no, consider installing GNU libiconv
configure: updating cache ./config.cache
configure: creating ./config.status
config.status: creating Makefile
config.status: creating config.h
config.status: executing depdir commands
mkdir .deps
gmake[3]: Entering directory `/var/obj/usr/ports/lang/gcc/work/build/libcpp'
/var/obj/usr/ports/lang/gcc/work/build/./prev-gcc/xgcc 
-B/var/obj/usr/ports/lang/gcc/work/build/./prev-gcc/ 
-B/usr/local/sparc64-portbld-freebsd10.0/bin/ 
-B/usr/local/sparc64-portbld-freebsd10.0/bin/ 
-B/usr/local/sparc64-portbld-freebsd10.0/lib/ -isystem 
/usr/local/sparc64-portbld-freebsd10.0/include -isystem 
/usr/local/sparc64-portbld-freebsd10.0/sys-include     
-I.././../gcc-4.6.3/libcpp -I. -I.././../gcc-4.6.3/libcpp/../include 
-I.././../gcc-4.6.3/libcpp/include  -g -O2 -gtoggle -W -Wall -Wwrite-strings 
-Wmissing-format-attribute -Wstrict-prototypes -Wmissing-prototypes 
-Wold-style-definition -Wc++-compat -pedantic -Wno-long-long  
-I.././../gcc-4.6.3/libcpp -I. -I.././../gcc-4.6.3/libcpp/../include 
-I.././../gcc-4.6.3/libcpp/include  -c -o charset.o -MT charset.o -MMD -MP -MF 
.deps/charset.Tpo .././../gcc-4.6.3/libcpp/charset.c
In file included from .././../gcc-4.6.3/libcpp/system.h:30:0,
                 from .././../gcc-4.6.3/libcpp/charset.c:22:
/var/obj/usr/ports/lang/gcc/work/build/./prev-gcc/include/stddef.h:150:26: 
error: two or more data types in declaration specifiers
gmake[3]: *** [charset.o] Error 1
gmake[3]: Leaving directory `/var/obj/usr/ports/lang/gcc/work/build/libcpp'
gmake[2]: *** [all-stage2-libcpp] Error 2
gmake[2]: Leaving directory `/var/obj/usr/ports/lang/gcc/work/build'
gmake[1]: *** [stage2-bubble] Error 2
gmake[1]: Leaving directory `/var/obj/usr/ports/lang/gcc/work/build'
gmake: *** [bootstrap-lean] Error 2
*** [do-build] Error code 1

-- 
Peter Jeremy

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