The g++-uc wrapper hardcodes $(STAGING_DIR) and $(TOOLCHAIN_DIR) paths which
will not work outside of the original build environment.
Replace the hardcoded staging_dir occurences with paths relative to the
$STAGING_DIR environment variable to make the g++-uc* wrappers usable in an
SDK environment.
Fixes the libdb47 build failure reported at
https://lists.openwrt.org/pipermail/openwrt-devel/2015-April/032455.html
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
SVN-Revision: 46162
27b9bf4493