Rick Mann wrote: > First I configure binutils, then build it and install it (as root), > then I set the path, then I configure GCC with --with-headers=the > newlib headers, and I run into this problem: > ... > Copying ../../newlib-1.15.0/newlib/libc/include to /usr/local/arm-elf/ > arm-elf/sys-include > mkdir: /usr/local/arm-elf/arm-elf/sys-include: Permission denied This is pretty much why --with-headers is deprecated/obsolete. Its entire purpose is to simply copy headers into the location under $prefix where the cross compiler that's about to be built will expect to find them. If that's too ugly for you then use a sysroot instead. Brian