buildroot/package/pkg-virtual.mk
Yann E. MORIN f674c428c2 core/pkg-virtual: do not check they are neabled
Virtual packages do not have a Kconfig symbol, so we must not check that
they are enabled.

Fixes:
    http://autobuild.buildroot.org/results/287/28713478cc6edf8e5d5c3e830fee86a42f0afa8d/
    ... and numerous similar failures ...

[Thomas:
 - use "$($(PKG)_IS_VIRTUAL)" != "YES" instead of !
   "$($(PKG)_IS_VIRTUAL)" = "YES"]

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-12-30 10:01:30 +01:00

74 lines
2.8 KiB
Makefile

################################################################################
# Virtual package infrastructure
#
# This file implements an infrastructure that eases development of
# package .mk files for virtual packages. It should be used for all
# virtual packages.
#
# See the Buildroot documentation for details on the usage of this
# infrastructure
#
# In terms of implementation, this virtual infrastructure requires
# the .mk file to only call the 'virtual-package' macro.
#
################################################################################
################################################################################
# inner-virtual-package -- defines the dependency rules of the virtual
# package against its provider.
#
# argument 1 is the lowercase package name
# argument 2 is the uppercase package name, including a HOST_ prefix
# for host packages
# argument 3 is the uppercase package name, without the HOST_ prefix
# for host packages
# argument 4 is the type (target or host)
################################################################################
# Note: putting this comment here rather than in the define block, otherwise
# make would try to expand the $(error ...) in the comment, which is not
# really what we want.
# We need to use second-expansion for the $(error ...) call, below,
# so it is not evaluated now, but as part of the generated make code.
define inner-virtual-package
# Ensure the virtual package has an implementation defined.
ifeq ($$(BR2_PACKAGE_HAS_$(2)),y)
ifeq ($$(call qstrip,$$(BR2_PACKAGE_PROVIDES_$(2))),)
$$(error No implementation selected for virtual package $(1). Configuration error)
endif
endif
$(2)_IS_VIRTUAL = YES
# A virtual package does not have any source associated
$(2)_SOURCE =
# Fake a version string, so it looks nicer in the build log
$(2)_VERSION = virtual
# This must be repeated from inner-generic-package, otherwise we get an empty
# _DEPENDENCIES
ifeq ($(4),host)
$(2)_DEPENDENCIES ?= $$(filter-out host-skeleton host-toolchain $(1),\
$$(patsubst host-host-%,host-%,$$(addprefix host-,$$($(3)_DEPENDENCIES))))
endif
# Add dependency against the provider
$(2)_DEPENDENCIES += $$(call qstrip,$$(BR2_PACKAGE_PROVIDES_$(2)))
# Call the generic package infrastructure to generate the necessary
# make targets
$(call inner-generic-package,$(1),$(2),$(3),$(4))
endef
################################################################################
# virtual-package -- the target generator macro for virtual packages
################################################################################
virtual-package = $(call inner-virtual-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)
host-virtual-package = $(call inner-virtual-package,host-$(pkgname),$(call UPPERCASE,host-$(pkgname)),$(call UPPERCASE,$(pkgname)),host)