Hi! I have a gcc cross compiler that at least seems to work (I'm able to cross compile binutils) - but I can't seem to be able to cross compile gcc properly. The toplevel config.log seems fine: configure:3896: checking for x86_64-builder-linux-gnu-gcc configure:3912: found /home/ubuntu/obj/ntools/bin/x86_64-builder-linux-gnu-gcc configure:3923: result: x86_64-builder-linux-gnu-gcc . But for instance x86_64-builder-linux-gnu/libstdc++-v3/config.log says something that I did not expect: configure:3559: checking for x86_64-builder-linux-gnu-gcc configure:3586: result: cc and cc is the compiler from the build system. Not the cross compiler. I also see that this happens for libgcc. I guess it happens for all target libraries. The crossed gcc is configured like this: /home/ubuntu/src/bin/gcc/configure --prefix=/home/ubuntu/obj/btools/usr --host=x86_64-builder-linux-gnu --build=x86_64-unknown-linux-gnu --enable-languages=c,c++ --disable-multilib --with-sysroot=/home/ubuntu/obj/btools Any hints? -- chs,