+ # --with-local-prefix:
+ # Remove /usr/local/include (default value) from gcc's include search
+ # path. This is not absolutely essential, however, it helps to minimize
+ # the influence of the host system.
+ # --with-native-system-header-dir=dirname
+ # Must be an absolute directory (from within sysroot).
+ # The compiler will search the sysroot directory within dirname for
+ # native system headers rather than the default /usr/include.
+ # For example, with:
+ # --with-sysroot=/opt/toolchain
+ # --with-native-system-header-dir=/tools/include
+ # then GCC will search for system headers in:
+ # /opt/toolchain/tools/include