package infra: remove duplicates in dependencies list

Currently, we just use what a package declares as its dependencies.

But some packages may declare the same depdency more than once. For
example, php has two options to add SQL support: 'mysql' or 'mysqli',
which are not exclusive. So, php.mk has mysql twice as a dependency.

Although that does not cause any grievance for make, we end up generating
dependency graphs where this duplicate dependency is visible.

Add an intermediary variable which contains the $(sort)-ed list of the
dependencies, thus eliminating any duplicates.

This has the side effect of also sorting the list, which is probably
good for reproducibility anyway.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN 2014-06-01 12:28:54 +02:00 committed by Thomas Petazzoni
parent 431fdde819
commit 9c1d3b6325

View File

@ -391,6 +391,9 @@ $(2)_DEPENDENCIES += toolchain
endif
endif
# Eliminate duplicates in dependencies
$(2)_FINAL_DEPENDENCIES = $$(sort $$($(2)_DEPENDENCIES))
$(2)_INSTALL_STAGING ?= NO
$(2)_INSTALL_IMAGES ?= NO
$(2)_INSTALL_TARGET ?= YES
@ -476,14 +479,14 @@ $$($(2)_TARGET_INSTALL_HOST): $$($(2)_TARGET_BUILD)
$(1)-build: $$($(2)_TARGET_BUILD)
$$($(2)_TARGET_BUILD): $$($(2)_TARGET_CONFIGURE)
# Since $(2)_DEPENDENCIES are phony targets, they are always "newer"
# Since $(2)_FINAL_DEPENDENCIES are phony targets, they are always "newer"
# than $(2)_TARGET_CONFIGURE. This would force the configure step (and
# therefore the other steps as well) to be re-executed with every
# invocation of make. Therefore, make $(2)_DEPENDENCIES an order-only
# invocation of make. Therefore, make $(2)_FINAL_DEPENDENCIES an order-only
# dependency by using |.
$(1)-configure: $$($(2)_TARGET_CONFIGURE)
$$($(2)_TARGET_CONFIGURE): | $$($(2)_DEPENDENCIES)
$$($(2)_TARGET_CONFIGURE): | $$($(2)_FINAL_DEPENDENCIES)
$$($(2)_TARGET_SOURCE) $$($(2)_TARGET_RSYNC): | dirs prepare
ifeq ($(filter $(1),$(DEPENDENCIES_HOST_PREREQ)),)
@ -505,7 +508,7 @@ $$($(2)_TARGET_PATCH): $$($(2)_TARGET_EXTRACT)
$(1)-extract: $$($(2)_TARGET_EXTRACT)
$$($(2)_TARGET_EXTRACT): $$($(2)_TARGET_SOURCE)
$(1)-depends: $$($(2)_DEPENDENCIES)
$(1)-depends: $$($(2)_FINAL_DEPENDENCIES)
$(1)-source: $$($(2)_TARGET_SOURCE)
else
@ -515,7 +518,7 @@ else
# configure
$$($(2)_TARGET_CONFIGURE): $$($(2)_TARGET_RSYNC)
$(1)-depends: $$($(2)_DEPENDENCIES)
$(1)-depends: $$($(2)_FINAL_DEPENDENCIES)
$(1)-patch: $(1)-rsync
$(1)-extract: $(1)-rsync
@ -526,7 +529,7 @@ $(1)-source: $$($(2)_TARGET_RSYNC_SOURCE)
endif
$(1)-show-depends:
@echo $$($(2)_DEPENDENCIES)
@echo $$($(2)_FINAL_DEPENDENCIES)
$(1)-graph-depends:
@$(INSTALL) -d $(O)/graphs