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################################################################################
# CMake package infrastructure
#
# This file implements an infrastructure that eases development of
# package .mk files for CMake packages. It should be used for all
# packages that use CMake as their build system.
#
# See the Buildroot documentation for details on the usage of this
# infrastructure
#
# In terms of implementation, this CMake infrastructure requires
# the .mk file to only specify metadata informations about the
# package: name, version, download URL, etc.
#
# We still allow the package .mk file to override what the different
# steps are doing, if needed. For example, if <PKG>_BUILD_CMDS is
# already defined, it is used as the list of commands to perform to
# build the package, instead of the default CMake behaviour. The
# package can also define some post operation hooks.
#
################################################################################

################################################################################
# CMAKETARGETS_INNER -- defines how the configuration, compilation and
# installation of a CMake 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 an HOST_ prefix
#             for host packages
#  argument 3 is the uppercase package name, without the HOST_ prefix
#             for host packages
#  argument 4 is the package directory prefix
#  argument 5 is the type (target or host)
################################################################################

define CMAKETARGETS_INNER

# define package-specific variables to default values
ifndef $(2)_SUBDIR
 ifdef $(3)_SUBDIR
  $(2)_SUBDIR = $($(3)_SUBDIR)
 else
  $(2)_SUBDIR ?=
 endif
endif

$(2)_CONF_ENV			?=
$(2)_CONF_OPT			?=
$(2)_MAKE			?= $(MAKE)
$(2)_MAKE_ENV			?=
$(2)_MAKE_OPT			?=
$(2)_INSTALL_HOST_OPT		?= install
$(2)_INSTALL_STAGING_OPT	?= DESTDIR=$$(STAGING_DIR) install
$(2)_INSTALL_TARGET_OPT		?= DESTDIR=$$(TARGET_DIR) install
$(2)_CLEAN_OPT			?= clean

$(2)_SRCDIR			= $$($(2)_DIR)/$($(2)_SUBDIR)
$(2)_BUILDDIR			= $$($(2)_SRCDIR)

#
# Configure step. Only define it if not already defined by the package
# .mk file. And take care of the differences between host and target
# packages.
#
ifndef $(2)_CONFIGURE_CMDS
ifeq ($(5),target)

# Configure package for target
define $(2)_CONFIGURE_CMDS
	(cd $$($$(PKG)_BUILDDIR) && \
	rm -f CMakeCache.txt && \
	$$($$(PKG)_CONF_ENV) $(HOST_DIR)/usr/bin/cmake $$($$(PKG)_SRCDIR) \
		-DCMAKE_TOOLCHAIN_FILE="$$(BASE_DIR)/toolchainfile.cmake" \
		-DCMAKE_INSTALL_PREFIX="/usr" \
		$$($$(PKG)_CONF_OPT) \
	)
endef
else

# Configure package for host
define $(2)_CONFIGURE_CMDS
	(cd $$($$(PKG)_BUILDDIR) && \
	rm -f CMakeCache.txt && \
	$(HOST_DIR)/usr/bin/cmake $$($$(PKG)_SRCDIR) \
		-DCMAKE_INSTALL_SO_NO_EXE=0 \
		-DCMAKE_FIND_ROOT_PATH="$$(HOST_DIR)" \
		-DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM="BOTH" \
		-DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY="BOTH" \
		-DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE="BOTH" \
		-DCMAKE_INSTALL_PREFIX="$$(HOST_DIR)/usr" \
		$$($$(PKG)_CONF_OPT) \
	)
endef
endif
endif

$(2)_DEPENDENCIES += host-cmake

#
# Build step. Only define it if not already defined by the package .mk
# file.
#
ifndef $(2)_BUILD_CMDS
ifeq ($(5),target)
define $(2)_BUILD_CMDS
	$(TARGET_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPT) -C $$($$(PKG)_BUILDDIR)
endef
else
define $(2)_BUILD_CMDS
	$(HOST_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPT) -C $$($$(PKG)_BUILDDIR)
endef
endif
endif

#
# Host installation step. Only define it if not already defined by the
# package .mk file.
#
ifndef $(2)_INSTALL_CMDS
define $(2)_INSTALL_CMDS
	$(HOST_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPT) $$($$(PKG)_INSTALL_HOST_OPT) -C $$($$(PKG)_BUILDDIR)
endef
endif

#
# Staging installation step. Only define it if not already defined by
# the package .mk file.
#
ifndef $(2)_INSTALL_STAGING_CMDS
define $(2)_INSTALL_STAGING_CMDS
	$(TARGET_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPT) $$($$(PKG)_INSTALL_STAGING_OPT) -C $$($$(PKG)_BUILDDIR)
endef
endif

#
# Target installation step. Only define it if not already defined by
# the package .mk file.
#
ifndef $(2)_INSTALL_TARGET_CMDS
define $(2)_INSTALL_TARGET_CMDS
	$(TARGET_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPT) $$($$(PKG)_INSTALL_TARGET_OPT) -C $$($$(PKG)_BUILDDIR)
endef
endif

#
# Clean step. Only define it if not already defined by
# the package .mk file.
#
ifndef $(2)_CLEAN_CMDS
define $(2)_CLEAN_CMDS
	-$(TARGET_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPT) $$($$(PKG)_CLEAN_OPT) -C $$($$(PKG)_BUILDDIR)
endef
endif

#
# Uninstall from staging step. Only define it if not already defined by
# the package .mk file.
#
ifndef $(2)_UNINSTALL_STAGING_CMDS
define $(2)_UNINSTALL_STAGING_CMDS
	(cd $$($$(PKG)_BUILDDIR) && sed "s:\(.*\):$$(STAGING_DIR)\1:" install_manifest.txt | xargs rm -f)
endef
endif

#
# Uninstall from target step. Only define it if not already defined
# by the package .mk file.
#
ifndef $(2)_UNINSTALL_TARGET_CMDS
define $(2)_UNINSTALL_TARGET_CMDS
	(cd $$($$(PKG)_BUILDDIR) && sed "s:\(.*\):$$(TARGET_DIR)\1:" install_manifest.txt | xargs rm -f)
endef
endif

# Call the generic package infrastructure to generate the necessary
# make targets
$(call GENTARGETS_INNER,$(1),$(2),$(3),$(4),$(5))

endef

################################################################################
# CMAKETARGETS -- the target generator macro for CMake packages
#
# Argument 1 is the package directory prefix [mandatory]
# Argument 2 is the lowercase package name   [mandatory]
# Argument 3 is "target" or "host"           [optional, default: "target"]
################################################################################

define CMAKETARGETS
ifeq ($(3),host)
$(call CMAKETARGETS_INNER,$(3)-$(2),$(call UPPERCASE,$(3)-$(2)),$(call UPPERCASE,$(2)),$(1),host)
else
$(call CMAKETARGETS_INNER,$(2),$(call UPPERCASE,$(2)),$(call UPPERCASE,$(2)),$(1),target)
endif
endef