${CONFIG}/configure: ${CONFIG}/configure.in
	@cd ${CONFIG} && autoconf

# autoheader might not change config.h.in, so touch a stamp file.
${CONFIG}/config.h.in: ${CONFIG}/stamp-h.in
${CONFIG}/stamp-h.in: ${CONFIG}/configure.in
	@cd ${CONFIG} && autoheader
	@date > ${CONFIG}/stamp-h.in

${incdir}/config.h: ${CONFIG}/stamp-h
${CONFIG}/stamp-h: ${CONFIG}/config.h.in ${CONFIG}/config.status
	@cd ${CONFIG} && ./config.status

Makefile: ${CONFIG}/Makefile.in ${CONFIG}/config.status
	@cd ${CONFIG} && ./config.status

${CONFIG}/config.status: ${CONFIG}/configure
	@cd ${CONFIG} && ./config.status --recheck