hi,everyone: I'm trying to build a cross compiler for arm. The problem appeared when I built the gcc with c,c++ languages. I use debian testing(lenny),x86_64 Here are my steps: 1.I build the binutils-2.18 2.I build the gcc-4.3.2 with only C 3.I build the glibc-2.7 with: ../glibc-2.7/configure --build=x86_64-linux --host=x86_64-linux --target=arm-linux --prefix=/home/yg/arm/usr/ --enable-add-ons 4.finally I will build gcc-4.3.2 with everything. ../gcc-4.3.2/configure --target=arm-linux --prefix=/home/yg/arm/usr --enable-languages=c,c++ --with-headers=/home/yg/arm/usr/include/ the problem is : make[3]: Leaving directory `/home/yg/arm/achieve/gcc/arm-linux/libgcc' /home/yg/arm/achieve/gcc/./gcc/xgcc -B/home/yg/arm/achieve/gcc/./gcc/ -B/home/yg/arm/usr/arm-linux/bin/ -B/home/yg/arm/usr/arm-linux/lib/ -isystem /home/yg/arm/usr/arm-linux/include -isystem /home/yg/arm/usr/arm-linux/sys-include -O2 -g -g -O2 -O2 -O2 -g -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fomit-frame-pointer -fPIC -Dinhibit-libc -D__gthr_posix_h -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -I. -I. -I../.././gcc -I../../../gcc-4.3.2/libgcc -I../../../gcc-4.3.2/libgcc/. -I../../../gcc-4.3.2/libgcc/../gcc -I../../../gcc-4.3.2/libgcc/../include -DHAVE_CC_TLS -o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3 -c ../../../gcc-4.3.2/libgcc/../gcc/libgcc2.c \ -fvisibility=hidden -DHIDE_EXPORTS <command-line>: warning: missing whitespace after the macro name In file included from /home/yg/arm/usr/arm-linux/sys-include/features.h:354, from /home/yg/arm/usr/arm-linux/sys-include/stdio.h:28, from ../../../gcc-4.3.2/libgcc/../gcc/tsystem.h:90, from ../../../gcc-4.3.2/libgcc/../gcc/libgcc2.c:33: /home/yg/arm/usr/arm-linux/sys-include/gnu/stubs.h:7:27: error: gnu/stubs-32.h: No such file or directory make[2]: *** [_muldi3.o] Error 1 make[2]: Leaving directory `/home/yg/arm/achieve/gcc/arm-linux/libgcc' make[1]: *** [all-target-libgcc] Error 2 make[1]: Leaving directory `/home/yg/arm/achieve/gcc' make: *** [all] Error 2