scripts/mk/pkg-info.mk

   1 # This Makefile fragment (since dpkg 1.16.1) defines the following package
   2 # information variables:
   3 #
   4 #   DEB_SOURCE: source package name.
   5 #   DEB_VERSION: package's full version (epoch + upstream vers. + revision).
   6 #   DEB_VERSION_EPOCH_UPSTREAM: package's version without the Debian revision.
   7 #   DEB_VERSION_UPSTREAM_REVISION: package's version without the Debian epoch.
   8 #   DEB_VERSION_UPSTREAM: package's upstream version.
   9 #   DEB_DISTRIBUTION: distribution(s) listed in the current debian/changelog
  10 #     entry.
  11 #
  12 #   SOURCE_DATE_EPOCH: source release date as seconds since the epoch, as
  13 #     specified by <https://reproducible-builds.org/specs/source-date-epoch/>
  14 #     (since dpkg 1.18.8).
  15
  16 dpkg_late_eval ?= $(or $(value DPKG_CACHE_$(1)),$(eval DPKG_CACHE_$(1) := $(shell $(2)))$(value DPKG_CACHE_$(1)))
  17
  18 DEB_SOURCE = $(call dpkg_late_eval,DEB_SOURCE,dpkg-parsechangelog -SSource)
  19 DEB_VERSION = $(call dpkg_late_eval,DEB_VERSION,dpkg-parsechangelog -SVersion)
  20 DEB_VERSION_EPOCH_UPSTREAM = $(call dpkg_late_eval,DEB_VERSION_EPOCH_UPSTREAM,echo '$(DEB_VERSION)' | sed -e 's/-[^-]*$$//')
  21 DEB_VERSION_UPSTREAM_REVISION = $(call dpkg_late_eval,DEB_VERSION_UPSTREAM_REVISION,echo '$(DEB_VERSION)' | sed -e 's/^[0-9]*://')
  22 DEB_VERSION_UPSTREAM = $(call dpkg_late_eval,DEB_VERSION_UPSTREAM,echo '$(DEB_VERSION_EPOCH_UPSTREAM)' | sed -e 's/^[0-9]*://')
  23 DEB_DISTRIBUTION = $(call dpkg_late_eval,DEB_DISTRIBUTION,dpkg-parsechangelog -SDistribution)
  24
  25 SOURCE_DATE_EPOCH ?= $(call dpkg_late_eval,SOURCE_DATE_EPOCH,dpkg-parsechangelog -STimestamp)
  26
  27 export SOURCE_DATE_EPOCH