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#!/usr/bin/env build

build_makedeps_name() { echo "${1}"|tr '/-' '__'; }

cat >"${BUILDER_MAKEFILE}" <<EOF
##
# Some generic catchall rules
all: all_all
all_all: all_all_package
all_all_clean: exports_clean
all_all_distclean: sysroot_clean artifacts_clean tmpdir_clean exports_clean

sysroot_clean:
	@if test -d "${SYSROOT}"; then \\
		echo "cleaning: sysroot" ; \\
		(cd "${SYSROOT}" && find . -delete) ; \\
	fi
artifacts_clean:
	@if test -d "${BUILDER_ATFDIR}"; then \\
		echo "cleaning: artifacts" ; \\
		(cd "${BUILDER_ATFDIR}" && find . -delete) ; \\
	fi
tmpdir_clean:
	@if test -d "${BUILDER_TMPDIR}"; then \\
		echo "cleaning: tmpdir" ; \\
		find "${BUILDER_TMPDIR}" -delete ; \\
	fi
exports_clean:
	@if test -d "${BUILDER_TOPDIR}/exports"; then \\
		echo "cleaning: exports" ; \\
		find "${BUILDER_TOPDIR}/exports" -delete ; \\
	fi

EOF

PACKAGES_CLEAN=
set -- $(cd "${BUILDER_PKGDIR}" && echo */*)
for package; do
	test -d "${BUILDER_PKGDIR}/${package}" || die "no packages defined"

	if ! test -f "${BUILDER_PKGDIR}/${package}/Buildrules"; then
		error "no rulesfile for package '${package}'"
		continue
	fi

	load_rules "${package}"

	makedep_category="$(build_makedeps_name "${CATEGORY}")"

	makedep_target="$(build_makedeps_name "${package}")"
	makedep_tmpdir="${BUILDER_TMPDIR}/${package}"
	makedep_prep="${makedep_tmpdir}/.prep"
	makedep_compile="${makedep_tmpdir}/.compile"
	makedep_test="${makedep_tmpdir}/.test"
	makedep_source="${BUILDER_PKGDIR}/${package}/source"
	makedep_package="${BUILDER_ATFDIR}/${package}-${VERSION}-${RELEASE}.${ARCHIVE_FORMAT}"
	makedep_export="${BUILDER_TOPDIR}/exports/${package}-${VERSION}-${RELEASE}.${CHOST%%-*}.rpm"
	makedep_install="${SYSROOT}/var/db/binpkgs/${package}"

	# Our entry header with simple rules
	cat<<-END_OF_RULES
	##
	# ${CATEGORY}/${NAME} - ${DESCRIPTION}
	all_all ${makedep_category}_all ${makedep_target}: ${makedep_package}
	all_all_source ${makedep_category}_all_source ${makedep_target}_source: ${makedep_source}
	all_all_prep ${makedep_category}_all_prep ${makedep_target}_prep: ${makedep_prep}
	all_all_compile ${makedep_category}_all_compile ${makedep_target}_compile: ${makedep_compile}
	all_all_packge ${makedep_category}_all_package ${makedep_target}_package: ${makedep_package}
	all_all_install ${makedep_category}_all_install ${makedep_target}_install: ${makedep_install}
	all_all_test ${makedep_category}_all_test ${makedep_target}_test: ${makedep_test}
	all_all_export ${makedep_category}_all_export ${makedep_target}_export: ${makedep_export}
	END_OF_RULES

	# Add Forward and Reverse depends
	for dep in ${BDEPENDS}; do
		if ! test -d "${BUILDER_PKGDIR}/${dep}"; then
			die "bad BDEPENDS in package '${package}'"
		elif ! test -f "${BUILDER_PKGDIR}/${dep}/Buildrules"; then
			die "no Buildrules for '${dep}'"
		fi

		target="$(build_makedeps_name "${dep}")"
		echo "${target}_uninstall: ${makedep_target}_uninstall"
		echo "${target}_clean: ${makedep_target}_clean"
		echo "${target}_distclean: ${makedep_target}_distclean"
		echo "${makedep_prep}: ${SYSROOT}/var/db/binpkgs/${dep}"
	done
	unset target
	unset dep

	for dep in ${RDEPENDS}; do
		if ! test -d "${BUILDER_PKGDIR}/${dep}"; then
			die "bad RDEPENDS in package '${package}'"
		elif ! test -f "${BUILDER_PKGDIR}/${dep}/Buildrules"; then
			die "no Buildrules for '${dep}'"
		fi
		echo "${makedep_install}: ${SYSROOT}/var/db/binpkgs/${dep}"
		echo "${makedep_test}: ${BUILDER_TMPDIR}/${dep}/.tested"
	done
	unset dep

	# Depend on updates to 'builder'
	for index in ".git/modules/scripts" "scripts/.git"; do
		if test -f "${BUILDER_TOPDIR}/${index}/index"; then
			echo "${makedep_prep}: ${BUILDER_TOPDIR}/${index}/index"
			break
		fi
	done
	unset index

	# Depend on the build rules
	echo "${makedep_prep}: ${RULESFILE}"
	if test -f "${BUILDER_PKGDIR}/${CATEGORY}/.buildrules"; then
		echo "${makedep_prep}: ${BUILDER_PKGDIR}/${CATEGORY}/.buildrules"
	fi

	# Depend on included files
	for config in ${BUILDER_INCLUDED}; do
		if test -f "${BUILDER_CFGDIR}/${config}"; then
			die "include does not exist '${file}'"
		fi
		echo "${makedep_prep}: ${BUILDER_CFGDIR}/${config}"
	done
	unset config

	# Depend on extra source files from ${F}
	for file in ${EXTRA_SOURCES}; do
		if test -f "${F}/${file}"; then
			die "file does not exist '${file}'"
		fi
		echo "${makedep_prep}: ${F}/${file}"
	done
	unset file

	# Depend on all listed patches
	for patch in ${PATCHES}; do
		patch="${F}/${NAME}-${VERSION}-${patch}.patch"
		if ! test -f "${patch}"; then
			die "patch does not exist '${patch}'"
		fi
		echo "${makedep_prep}: ${patch}"
	done
	unset patch


	# FIXME there can be strange characters in a URI .. this might not be
	# the best approach in the long term.
	PACKAGE_SOURCES=
	for url in ${SOURCE_URI}; do
		case "${url}" in
		# Do not translate local paths into archives in BUILDER_SRCDIR
		(file://*|/*)	PACKAGE_SOURCES="${PACKAGE_SOURCES} ${url##file://}";;

		# Assume anything else with :// in the name is remote
		(*://*)		pkg_src="$(build-url --archive "${url}")"
				if test "$?" -ne "0"; then
					exit 1
				fi
				PACKAGE_SOURCES="${PACKAGE_SOURCES} ${BUILDER_SRCDIR}/${pkg_src}";;
		# Junk?
		(*)		die "do not know how to handle url '${url}'";;
		esac
	done
	echo "${makedep_source}: ${PACKAGE_SOURCES}"

	if test -e "${makedep_source}"; then
		cat<<-EOF
		${makedep_target}_fetch: ${BUILDER_PKGDIR}/${package}/source
		EOF
	else
		cat<<-EOF
		${makedep_prep}: ${PACKAGE_SOURCES}
		${makedep_target}_fetch: ${PACKAGE_SOURCES}
		EOF
	fi

	##
	# Produce the various build commands
	printf "${makedep_source}:\n\t@build-make-source '${package}'\n"
	printf "${makedep_prep}:\n\t@build-make-prep '${package}'\n"
	printf "${makedep_compile}: ${makedep_prep}\n\t@build-make-compile '${package}'\n"
	printf "${makedep_package}: ${makedep_compile}\n\t@build-make-package '${package}'\n"
	printf "${makedep_install}: ${makedep_package}\n\t@build-make-install '${package}'\n"
	printf "${makedep_test}: ${makedep_install}\n\t@build-make-test '${package}'\n"
	printf "${makedep_export}: ${makedep_install}\n\t@build-make-export '${package}'\n"
	printf "${makedep_target}_uninstall:\n\t@build-make-uninstall '${package}'\n"
	printf "${makedep_target}_clean:\n\t@build-make-clean '${package}'\n"
	printf "${makedep_target}_distclean:\n\t@build-make-distclean '${package}'\n"

	##
	# This is a bit of a fun late-injection of the source archive for a
	# package.  The core problem is that multiple packages may depend on
	# the same sources, so we set up a separate rule for the source
	# archive when processing the package, but only if an existing entry
	# for that source does not exist.  We use the source name (as opposed
	# to the package name) to track if the package already has a rule.  The
	# whole thing really translates into something like
	# foo_1_1_3_tar_bz2="http://some/path/to/foo-1.1.3.tar.bz2"
	# All forms of URL translation and variable translation are done for us
	# by fetch so that makedeps doesn't have any specific expectations on
	# what the variable name should be.
	for url in ${SOURCE_URI}; do
		case "${url}" in
		# Do not translate local paths into archives in BUILDER_SRCDIR
		(file://*|/*)	echo "${url##file://}:";;

		# Assume anything else with :// in the name is remote
		(*://*)
			var="fetch_$(build-url --archive "${url}"|sed 's/[+.-]/_/g')"
			if test -z "$(eval echo -n "\$${var}")"; then
				eval "${var}='${url}'"
				echo "${BUILDER_SRCDIR}/$(build-url --archive "${url}"):"
				echo "	@build-make-fetch \"${url}\""
			fi
			;;
		esac
	done

	printf '# End of %s\n\n' "${CATEGORY}/${NAME}"
done >> "${BUILDER_MAKEFILE}"

# vim: filetype=sh