kumquat-buildroot/package/pkg-luarocks.mk

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################################################################################
# LuaRocks package infrastructure
# see http://luarocks.org/
#
# This file implements an infrastructure that eases development of
# package .mk files for LuaRocks packages.
# LuaRocks supports various build.type : builtin, make, cmake.
# This luarocks infrastructure supports only the builtin mode,
# the make & cmake modes could be directly handled by generic & cmake infrastructure.
#
# See the Buildroot documentation for details on the usage of this
# infrastructure
#
# In terms of implementation, this LuaRocks infrastructure requires
# the .mk file to only specify metadata information about the
# package: name, version, etc.
#
################################################################################
################################################################################
# inner-luarocks-package -- defines how the configuration, compilation and
# installation of a LuaRocks package should be done, implements a few hooks to
# tune the build process and calls the generic package infrastructure to
# generate the necessary make targets
#
# 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)
################################################################################
define inner-luarocks-package
$(2)_BUILD_OPTS ?=
$(2)_NAME_UPSTREAM ?= $(1)
$(2)_SUBDIR ?= $$($(2)_NAME_UPSTREAM)-$$(shell echo "$$($(2)_VERSION)" | sed -e "s/-[0-9]$$$$//")
$(2)_ROCKSPEC ?= $$(call LOWERCASE,$$($(2)_NAME_UPSTREAM))-$$($(2)_VERSION).rockspec
$(2)_SOURCE ?= $$(call LOWERCASE,$$($(2)_NAME_UPSTREAM))-$$($(2)_VERSION).src.rock
infra: consistently use double dollar signs inside inner-xxx-targets The inner-xxx-targets in the buildroot package infrastructures are evaluated using $(eval) which causes variable references to be a bit different than in regular make code. As we want most references to be expanded only at the time of the $(eval) we should not use standard references $(VAR) but rather use double dollar signs $$(VAR). This includes function references like $(call), $(subst), etc. The only exception is the reference to pkgdir/pkgname and numbered variables, which are parameters to the inner block: $(1), $(2), etc. This patch introduces consistent usage of double-dollar signs throughout the different inner-xxx-targets blocks. In some cases, this would potentially cause circular references, in particular when the value of HOST_FOO_VAR would be obtained from the corresponding FOO_VAR if HOST_FOO_VAR is not defined. In these cases, a test is added to check for a host package (the only case where such constructions are relevant; these are not circular). Benefits of these changes are: - behavior of variables is now again as expected. For example, setting $(2)_VERSION = virtual in pkg-virtual.mk will effectively work, while originally it would cause very odd results. - The output of 'make printvars' is now much more useful. This target shows the value of all variables, and the expression that led to that value. However, if the expression was coming from an inner-xxx-targets block, and was using single dollar signs, it would show in printvars as VAR = value (value) while if double dollar signs are used, it would effectively look like VAR = value (actual expression) as is intended. This improvement is for example effective for FOO_DL_VERSION, FOO_RAWNAME, FOO_SITE_METHOD and FOO_MAKE. The correctness of this patch has been verified using 'make printvars', 'make manual' and 'make legal-info' before and after applying this patch, and comparing the output. Insight-provided-by: Arnout Vandecappelle <arnout@mind.be> Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2014-06-11 21:12:24 +02:00
$(2)_SITE ?= $$(call qstrip,$$(BR2_LUAROCKS_MIRROR))
# Since we do not support host-luarocks-package, we know this is
# a target package, and can just add the required dependencies
$(2)_DEPENDENCIES += luainterpreter
$(2)_EXTRACT_DEPENDENCIES += host-luarocks
#
# Extract step. Extract into a temporary dir and move the relevant part to the
# source dir.
#
ifndef $(2)_EXTRACT_CMDS
define $(2)_EXTRACT_CMDS
mkdir -p $$($(2)_DIR)/luarocks-extract
cd $$($(2)_DIR)/luarocks-extract && \
$$(LUAROCKS_RUN_ENV) $$(LUAROCKS_RUN_CMD) unpack --force $$($(2)_DL_DIR)/$$($(2)_SOURCE)
mv $$($(2)_DIR)/luarocks-extract/*/* $$($(2)_DIR)
endef
endif
#
# Build/install step.
#
ifndef $(2)_INSTALL_TARGET_CMDS
define $(2)_INSTALL_TARGET_CMDS
cd $$($(2)_SRCDIR) && $$(LUAROCKS_RUN_ENV) \
$$(LUAROCKS_RUN_CMD) make --keep $$($(2)_ROCKSPEC) $$($(2)_BUILD_OPTS)
endef
endif
# Call the generic package infrastructure to generate the necessary
# make targets
$(call inner-generic-package,$(1),$(2),$(3),$(4))
# Upgrade helper
$(1)-upgrade: host-luarocks
$$(LUAROCKS_RUN_CMD) buildroot $$($(2)_NAME_UPSTREAM) $(1)
.PHONY: $(1)-upgrade
endef
################################################################################
# luarocks-package -- the target generator macro for LuaRocks packages
################################################################################
luarocks-package = $(call inner-luarocks-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)
# host-luarocks-package not supported