lxo: now I got: In file included from ../../../libgcc/../gcc/tsystem.h:87, from ../../../libgcc/libgcc2.c:27: /opt/powerpc64le-sysroot/usr/include/stdio.h:27:10: fatal error: bits/libc-header-start.h: No such file or directory the file does exist: /opt/powerpc64le-sysroot/usr/include/powerpc64le-linux-gnu/bits/libc-header-start.h if it helps, here's the configure settings for gcc 8 in the sysroot: Configured with: ../src/configure -v --with-pkgversion='Debian 8.3.0-6' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --program-prefix=powerpc64le-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --enable-plugin --enable-default-pie --with-system-zlib --disable-libphobos --enable-objc-gc=auto --enable-secureplt --with-cpu=power8 --enable-targets=powerpcle-linux --disable-multilib --enable-multiarch --disable-werror --with-long-double-128 --enable-checking=release --build=powerpc64le-linux-gnu --host=powerpc64le-linux-gnu --target=powerpc64le-linux-gnu