diff options
Diffstat (limited to 'scripts/mk/vendor.mk')
| -rw-r--r-- | scripts/mk/vendor.mk | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/scripts/mk/vendor.mk b/scripts/mk/vendor.mk index aa75cd6fc..f3b1565bb 100644 --- a/scripts/mk/vendor.mk +++ b/scripts/mk/vendor.mk @@ -3,16 +3,40 @@ # DEB_VENDOR: output of dpkg-vendor --query Vendor # DEB_PARENT_VENDOR: output of dpkg-vendor --query Parent (can be empty) # -# The snippet also defines a macro "dpkg_vendor_derives_from" that you can -# use to verify if the current vendor derives from another vendor with a -# simple test like this one: -# ifeq ($(call dpkg_vendor_derives_from ubuntu),yes) -# ... -# endif +# This Makefile snippet also defines a set "dpkg_vendor_derives_from" +# macros that can be used to verify if the current vendor derives from +# another vendor. The unversioned variant defaults to the v0 version if +# undefined, which can be defined explicitly to one of the versions or the +# versioned macros can be used directly. The following are example usages: +# +# - dpkg_vendor_derives_from (since dpkg 1.16.1) +# +# ifeq ($(shell $(call dpkg_vendor_derives_from,ubuntu)),yes) +# ... +# endif +# +# - dpkg_vendor_derives_from_v0 (since dpkg 1.19.3) +# +# ifeq ($(shell $(call dpkg_vendor_derives_from_v0,ubuntu)),yes) +# ... +# endif +# +# - dpkg_vendor_derives_from_v1 (since dpkg 1.19.3) +# +# dpkg_vendor_derives_from = $(dpkg_vendor_derives_from_v1) +# ifeq ($(call dpkg_vendor_derives_from,ubuntu),yes) +# ... +# endif +# ifeq ($(call dpkg_vendor_derives_from_v1,ubuntu),yes) +# ... +# endif dpkg_late_eval ?= $(or $(value DPKG_CACHE_$(1)),$(eval DPKG_CACHE_$(1) := $(shell $(2)))$(value DPKG_CACHE_$(1))) DEB_VENDOR = $(call dpkg_late_eval,DEB_VENDOR,dpkg-vendor --query Vendor) DEB_PARENT_VENDOR = $(call dpkg_late_eval,DEB_PARENT_VENDOR,dpkg-vendor --query Parent) -dpkg_vendor_derives_from = dpkg-vendor --derives-from $(1) && echo yes || echo no +dpkg_vendor_derives_from_v0 = dpkg-vendor --derives-from $(1) && echo yes || echo no +dpkg_vendor_derives_from_v1 = $(shell $(dpkg_vendor_derives_from_v0)) + +dpkg_vendor_derives_from ?= $(dpkg_vendor_derives_from_v0) |