Fix $SOURCE_DIR when running outside of root dir

Signed-off-by: falkTX <[email protected]>

Author: falkTX

.common

@@ -138,7 +138,7 @@ fi
 BUILDROOT_LINK=http://buildroot.uclibc.org/downloads/
 BUILDROOT_FILE=${BUILDROOT_VERSION}.tar.${BUILDROOT_TAR_EXT}
 
-SOURCE_DIR=$("${readlink}" -f $(dirname ${0}))
+SOURCE_DIR="$(pwd)"
 BR2_EXTERNAL=${SOURCE_DIR}/${BR2_BUILD_CONFIG}
 BR2_MAKE="make O=${WORKDIR}/${PLATFORM} BR2_EXTERNAL=${BR2_EXTERNAL} BR2_EXTERNAL_PLUGINS_DEP=${BR2_EXTERNAL} BR2_PLATFORM=${BR2_PLATFORM}"
 BR2_TARGET=${WORKDIR}/${PLATFORM}/target