NULL = EXTRA_DIST = \ gen.sh \ $(NULL) SRC_TARBALL = src.tar.gz all: if [[ ! -d src && -f ${SRC_TARBALL} ]] ; then tar -xvzf ${SRC_TARBALL}; fi dist-hook: if [[ -d src ]]; then tar -cvzf $(distdir)/${SRC_TARBALL} src; fi