Merge from bittboy/buildroot@db180c0

package/pkg-utils.mk

@@ -0,0 +1,176 @@
+################################################################################
+#
+# This file contains various utility functions used by the package
+# infrastructure, or by the packages themselves.
+#
+################################################################################
+
+#
+# Manipulation of .config files based on the Kconfig
+# infrastructure. Used by the BusyBox package, the Linux kernel
+# package, and more.
+#
+
+define KCONFIG_ENABLE_OPT # (option, file)
+	$(SED) "/\\<$(1)\\>/d" $(2)
+	echo '$(1)=y' >> $(2)
+endef
+
+define KCONFIG_SET_OPT # (option, value, file)
+	$(SED) "/\\<$(1)\\>/d" $(3)
+	echo '$(1)=$(2)' >> $(3)
+endef
+
+define KCONFIG_DISABLE_OPT # (option, file)
+	$(SED) "/\\<$(1)\\>/d" $(2)
+	echo '# $(1) is not set' >> $(2)
+endef
+
+# Helper functions to determine the name of a package and its
+# directory from its makefile directory, using the $(MAKEFILE_LIST)
+# variable provided by make. This is used by the *-package macros to
+# automagically find where the package is located.
+pkgdir = $(dir $(lastword $(MAKEFILE_LIST)))
+pkgname = $(lastword $(subst /, ,$(pkgdir)))
+
+# Define extractors for different archive suffixes
+INFLATE.bz2  = $(BZCAT)
+INFLATE.gz   = $(ZCAT)
+INFLATE.lz   = $(LZCAT)
+INFLATE.lzma = $(XZCAT)
+INFLATE.tbz  = $(BZCAT)
+INFLATE.tbz2 = $(BZCAT)
+INFLATE.tgz  = $(ZCAT)
+INFLATE.xz   = $(XZCAT)
+INFLATE.tar  = cat
+# suitable-extractor(filename): returns extractor based on suffix
+suitable-extractor = $(INFLATE$(suffix $(1)))
+
+# extractor-dependency(filename): returns extractor for 'filename' if the
+# extractor is a dependency. If we build the extractor return nothing.
+# $(firstword) is used here because the extractor can have arguments, like
+# ZCAT="gzip -d -c", and to check for the dependency we only want 'gzip'.
+extractor-dependency = $(firstword $(INFLATE$(filter-out \
+	$(EXTRACTOR_DEPENDENCY_PRECHECKED_EXTENSIONS),$(suffix $(1)))))
+
+# check-deprecated-variable -- throw an error on deprecated variables
+# example:
+#   $(eval $(call check-deprecated-variable,FOO_MAKE_OPT,FOO_MAKE_OPTS))
+define check-deprecated-variable # (deprecated var, new var)
+ifneq ($$(origin $(1)),undefined)
+$$(error Package error: use $(2) instead of $(1). Please fix your .mk file)
+endif
+endef
+
+# $(1): YES or NO
+define yesno-to-bool
+	$(subst NO,false,$(subst YES,true,$(1)))
+endef
+
+# json-info -- return package or filesystem metadata formatted as an entry
+#              of a JSON dictionnary
+# $(1): upper-case package or filesystem name
+define json-info
+	"$($(1)_NAME)": {
+		"type": "$($(1)_TYPE)",
+		$(if $(filter rootfs,$($(1)_TYPE)), \
+			$(call _json-info-fs,$(1)), \
+			$(call _json-info-pkg,$(1)), \
+		)
+	}
+endef
+
+# _json-info-pkg, _json-info-pkg-details, _json-info-fs: private helpers
+# for json-info, above
+define _json-info-pkg
+	$(if $($(1)_IS_VIRTUAL), \
+		"virtual": true$(comma),
+		"virtual": false$(comma)
+		$(call _json-info-pkg-details,$(1)) \
+	)
+	"dependencies": [
+		$(call make-comma-list,$(sort $($(1)_FINAL_ALL_DEPENDENCIES)))
+	],
+	"reverse_dependencies": [
+		$(call make-comma-list,$(sort $($(1)_RDEPENDENCIES)))
+	]
+endef
+
+define _json-info-pkg-details
+	"version": "$($(1)_DL_VERSION)",
+	"licenses": "$($(1)_LICENSE)",
+	"install_target": $(call yesno-to-bool,$($(1)_INSTALL_TARGET)),
+	"install_staging": $(call yesno-to-bool,$($(1)_INSTALL_STAGING)),
+	"install_images": $(call yesno-to-bool,$($(1)_INSTALL_IMAGES)),
+	"downloads": [
+	$(foreach dl,$(sort $($(1)_ALL_DOWNLOADS)),
+		{
+			"source": "$(notdir $(dl))",
+			"uris": [
+				$(call make-comma-list,
+					$(subst \|,|,
+						$(call DOWNLOAD_URIS,$(dl),$(1))
+					)
+				)
+			]
+		},
+	)
+	],
+endef
+
+define _json-info-fs
+	"dependencies": [
+		$(call make-comma-list,$(sort $($(1)_DEPENDENCIES)))
+	]
+endef
+
+# clean-json -- cleanup pseudo-json into clean json:
+#  - remove commas before closing ] and }
+#  - minify with $(strip)
+clean-json = $(strip \
+	$(subst $(comma)},}, $(subst $(comma)$(space)},$(space)}, \
+	$(subst $(comma)],], $(subst $(comma)$(space)],$(space)], \
+		$(strip $(1)) \
+	)))) \
+)
+
+#
+# legal-info helper functions
+#
+LEGAL_INFO_SEPARATOR = "::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::"
+
+define legal-warning # text
+	echo "WARNING: $(1)" >>$(LEGAL_WARNINGS)
+endef
+
+define legal-warning-pkg # pkg, text
+	echo "WARNING: $(1): $(2)" >>$(LEGAL_WARNINGS)
+endef
+
+define legal-warning-nosource # pkg, {local|override}
+	$(call legal-warning-pkg,$(1),sources not saved ($(2) packages not handled))
+endef
+
+define legal-manifest # {HOST|TARGET}, pkg, version, license, license-files, source, url, dependencies
+	echo '"$(2)","$(3)","$(4)","$(5)","$(6)","$(7)","$(8)"' >>$(LEGAL_MANIFEST_CSV_$(1))
+endef
+
+define legal-license-file # pkgname, pkgname-pkgver, pkg-hashfile, filename, file-fullpath, {HOST|TARGET}
+	mkdir -p $(LICENSE_FILES_DIR_$(6))/$(2)/$(dir $(4)) && \
+	{ \
+		support/download/check-hash $(3) $(5) $(4); \
+		case $${?} in (0|3) ;; (*) exit 1;; esac; \
+	} && \
+	cp $(5) $(LICENSE_FILES_DIR_$(6))/$(2)/$(4)
+endef
+
+non-virtual-deps = $(foreach p,$(1),$(if $($(call UPPERCASE,$(p))_IS_VIRTUAL),,$(p)))
+
+# Returns the list of recursive dependencies and their licensing terms
+# for the package specified in parameter (in lowercase). If that
+# package is a target package, remove host packages from the list.
+legal-deps = \
+    $(foreach p,\
+        $(filter-out $(if $(1:host-%=),host-%),\
+            $(call non-virtual-deps,\
+                $($(call UPPERCASE,$(1))_FINAL_RECURSIVE_DEPENDENCIES))),$(p) [$($(call UPPERCASE,$(p))_LICENSE)])