scripts/mk/vendor.mk

   1 # This Makefile fragment (since dpkg 1.16.1) defines the following
   2 # vendor-related variables:
   3 #
   4 #   DEB_VENDOR: Output of «dpkg-vendor --query Vendor».
   5 #   DEB_PARENT_VENDOR: Output of «dpkg-vendor --query Parent» (can be empty).
   6 #
   7 # This Makefile fragment also defines a set of "dpkg_vendor_derives_from"
   8 # macros that can be used to verify if the current vendor derives from
   9 # another vendor. The unversioned variant defaults to the v0 version if
  10 # undefined or to the v1 version when on build API 1, otherwise it can be
  11 # defined explicitly to one of the versions or the versioned macros can be
  12 # used directly. The following are example usages:
  13 #
  14 # - dpkg_vendor_derives_from (since dpkg 1.16.1)
  15 #
  16 #   ifeq ($(shell $(call dpkg_vendor_derives_from,ubuntu)),yes)
  17 #     ...
  18 #   endif
  19 #
  20 # - dpkg_vendor_derives_from_v0 (since dpkg 1.19.3)
  21 #
  22 #   ifeq ($(shell $(call dpkg_vendor_derives_from_v0,ubuntu)),yes)
  23 #     ...
  24 #   endif
  25 #
  26 # - dpkg_vendor_derives_from_v1 (since dpkg 1.19.3)
  27 #
  28 #   dpkg_vendor_derives_from = $(dpkg_vendor_derives_from_v1)
  29 #   ifeq ($(call dpkg_vendor_derives_from,ubuntu),yes)
  30 #     ...
  31 #   endif
  32 #   ifeq ($(call dpkg_vendor_derives_from_v1,ubuntu),yes)
  33 #     ...
  34 #   endif
  35 #
  36 # Note:
  37 # - Only documented variables are considered public interfaces.
  38 # - Expects to be included from the source tree root directory.
  39
  40 ifndef dpkg_vendor_mk_included
  41 dpkg_vendor_mk_included = yes
  42
  43 ifndef dpkg_datadir
  44   dpkg_datadir := $(dir $(lastword $(MAKEFILE_LIST)))
  45 endif
  46 include $(dpkg_datadir)/buildapi.mk
  47
  48 dpkg_late_eval ?= $(if $(filter undefined,$(flavor DPKG_CACHE_$(1))),$(eval DPKG_CACHE_$(1) := $(shell $(2)))$(value DPKG_CACHE_$(1)),$(value DPKG_CACHE_$(1)))
  49
  50 DEB_VENDOR = $(call dpkg_late_eval,DEB_VENDOR,dpkg-vendor --query Vendor)
  51 DEB_PARENT_VENDOR = $(call dpkg_late_eval,DEB_PARENT_VENDOR,dpkg-vendor --query Parent)
  52
  53 dpkg_vendor_derives_from_v0 = dpkg-vendor --derives-from $(1) && echo yes || echo no
  54 dpkg_vendor_derives_from_v1 = $(shell $(dpkg_vendor_derives_from_v0))
  55
  56 ifeq ($(call dpkg_build_api_ge,1),yes)
  57 dpkg_vendor_derives_from ?= $(dpkg_vendor_derives_from_v1)
  58 else
  59 dpkg_vendor_derives_from ?= $(dpkg_vendor_derives_from_v0)
  60 endif
  61
  62 endif # dpkg_vendor_mk_included