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kumquat-buildroot/package/pkg-cmake.mk
Gwenhael Goavec-Merou 604c92043b pkg-cmake: allow to build package in a subdirectory 
For some cmake based packages, like GNURadio, it's forbidden to do the
compilation directly in the sources directory. This patch add a new
variable to specify, if needed, the name of a sub-directory used to compile.

[Thomas: put the documentation at the right place in the manual, not
in the middle of the <pkg>_CONF_OPTS description.]

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tested-by: Angelo Compagnucci <angelo.compagnucci@gmail.com>
Reviewed-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-03-13 22:34:43 +01:00

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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 information 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.
#
################################################################################
# Set compiler variables.
ifeq ($(BR2_CCACHE),y)
CMAKE_HOST_C_COMPILER = $(HOST_DIR)/usr/bin/ccache
CMAKE_HOST_CXX_COMPILER = $(HOST_DIR)/usr/bin/ccache
CMAKE_HOST_C_COMPILER_ARG1 = $(HOSTCC_NOCCACHE)
CMAKE_HOST_CXX_COMPILER_ARG1 = $(HOSTCXX_NOCCACHE)
else
CMAKE_HOST_C_COMPILER = $(HOSTCC)
CMAKE_HOST_CXX_COMPILER = $(HOSTCXX)
endif
ifneq ($(QUIET),)
CMAKE_QUIET = -DCMAKE_RULE_MESSAGES=OFF -DCMAKE_INSTALL_MESSAGE=NEVER
endif
################################################################################
# inner-cmake-package -- 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 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-cmake-package
$(2)_CONF_ENV ?=
$(2)_CONF_OPTS ?=
$(2)_MAKE ?= $$(MAKE)
$(2)_MAKE_ENV ?=
$(2)_MAKE_OPTS ?=
$(2)_INSTALL_OPTS ?= install
$(2)_INSTALL_STAGING_OPTS ?= DESTDIR=$$(STAGING_DIR) install
$(2)_INSTALL_TARGET_OPTS ?= DESTDIR=$$(TARGET_DIR) install
$(2)_SRCDIR = $$($(2)_DIR)/$$($(2)_SUBDIR)
$(3)_SUPPORTS_IN_SOURCE_BUILD ?= YES
ifeq ($$($(3)_SUPPORTS_IN_SOURCE_BUILD),YES)
$(2)_BUILDDIR = $$($(2)_SRCDIR)
else
$(2)_BUILDDIR = $$($(2)_SRCDIR)/buildroot-build
endif
#
# 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 $(2)_CONFIGURE_CMDS
ifeq ($(4),target)
# Configure package for target
define $(2)_CONFIGURE_CMDS
(mkdir -p $$($$(PKG)_BUILDDIR) && \
cd $$($$(PKG)_BUILDDIR) && \
rm -f CMakeCache.txt && \
PATH=$$(BR_PATH) \
$$($$(PKG)_CONF_ENV) $$(HOST_DIR)/usr/bin/cmake $$($$(PKG)_SRCDIR) \
-DCMAKE_TOOLCHAIN_FILE="$$(HOST_DIR)/usr/share/buildroot/toolchainfile.cmake" \
-DCMAKE_BUILD_TYPE=$$(if $$(BR2_ENABLE_DEBUG),Debug,Release) \
-DCMAKE_INSTALL_PREFIX="/usr" \
-DCMAKE_COLOR_MAKEFILE=OFF \
-DBUILD_DOC=OFF \
-DBUILD_DOCS=OFF \
-DBUILD_EXAMPLE=OFF \
-DBUILD_EXAMPLES=OFF \
-DBUILD_TEST=OFF \
-DBUILD_TESTS=OFF \
-DBUILD_TESTING=OFF \
-DBUILD_SHARED_LIBS=$$(if $$(BR2_STATIC_LIBS),OFF,ON) \
-DUSE_CCACHE=$$(if $$(BR2_CCACHE),ON,OFF) \
$$(CMAKE_QUIET) \
$$($$(PKG)_CONF_OPTS) \
)
endef
else
# Configure package for host
define $(2)_CONFIGURE_CMDS
(mkdir -p $$($$(PKG)_BUILDDIR) && \
cd $$($$(PKG)_BUILDDIR) && \
rm -f CMakeCache.txt && \
PATH=$$(BR_PATH) \
$$(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" \
-DCMAKE_C_FLAGS="$$(HOST_CFLAGS)" \
-DCMAKE_CXX_FLAGS="$$(HOST_CXXFLAGS)" \
-DCMAKE_EXE_LINKER_FLAGS="$$(HOST_LDFLAGS)" \
-DCMAKE_ASM_COMPILER="$$(HOSTAS)" \
-DCMAKE_C_COMPILER="$$(CMAKE_HOST_C_COMPILER)" \
-DCMAKE_CXX_COMPILER="$$(CMAKE_HOST_CXX_COMPILER)" \
$(if $$(CMAKE_HOST_C_COMPILER_ARG1),\
-DCMAKE_C_COMPILER_ARG1="$$(CMAKE_HOST_C_COMPILER_ARG1)" \
-DCMAKE_CXX_COMPILER_ARG1="$$(CMAKE_HOST_CXX_COMPILER_ARG1)" \
) \
-DCMAKE_COLOR_MAKEFILE=OFF \
-DBUILD_DOC=OFF \
-DBUILD_DOCS=OFF \
-DBUILD_EXAMPLE=OFF \
-DBUILD_EXAMPLES=OFF \
-DBUILD_TEST=OFF \
-DBUILD_TESTS=OFF \
-DBUILD_TESTING=OFF \
$$(CMAKE_QUIET) \
$$($$(PKG)_CONF_OPTS) \
)
endef
endif
endif
# This must be repeated from inner-generic-package, otherwise we only get
# host-cmake in _DEPENDENCIES because of the following line
ifeq ($(4),host)
$(2)_DEPENDENCIES ?= $$(filter-out host-toolchain $(1),$$(patsubst host-host-%,host-%,$$(addprefix host-,$$($(3)_DEPENDENCIES))))
endif
$(2)_DEPENDENCIES += host-cmake
#
# Build step. Only define it if not already defined by the package .mk
# file.
#
ifndef $(2)_BUILD_CMDS
ifeq ($(4),target)
define $(2)_BUILD_CMDS
$$(TARGET_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPTS) -C $$($$(PKG)_BUILDDIR)
endef
else
define $(2)_BUILD_CMDS
$$(HOST_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPTS) -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
$$(HOST_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPTS) $$($$(PKG)_INSTALL_OPTS) -C $$($$(PKG)_BUILDDIR)
endef
endif
#
# Staging installation step. Only define it if not already defined by
# the package .mk file.
#
ifndef $(2)_INSTALL_STAGING_CMDS
define $(2)_INSTALL_STAGING_CMDS
$$(TARGET_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPTS) $$($$(PKG)_INSTALL_STAGING_OPTS) -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
$$(TARGET_MAKE_ENV) $$($$(PKG)_MAKE_ENV) $$($$(PKG)_MAKE) $$($$(PKG)_MAKE_OPTS) $$($$(PKG)_INSTALL_TARGET_OPTS) -C $$($$(PKG)_BUILDDIR)
endef
endif
# Call the generic package infrastructure to generate the necessary
# make targets
$(call inner-generic-package,$(1),$(2),$(3),$(4))
endef
################################################################################
# cmake-package -- the target generator macro for CMake packages
################################################################################
cmake-package = $(call inner-cmake-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)
host-cmake-package = $(call inner-cmake-package,host-$(pkgname),$(call UPPERCASE,host-$(pkgname)),$(call UPPERCASE,$(pkgname)),host)
################################################################################
# Generation of the CMake toolchain file
################################################################################
# CMAKE_SYSTEM_PROCESSOR should match uname -m
ifeq ($(BR2_ARM_CPU_ARMV4),y)
CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT = armv4
else ifeq ($(BR2_ARM_CPU_ARMV5),y)
CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT = armv5
else ifeq ($(BR2_ARM_CPU_ARMV6),y)
CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT = armv6
else ifeq ($(BR2_ARM_CPU_ARMV7A),y)
CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT = armv7
endif
ifeq ($(BR2_arm),y)
CMAKE_SYSTEM_PROCESSOR = $(CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT)l
else ifeq ($(BR2_armeb),y)
CMAKE_SYSTEM_PROCESSOR = $(CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT)b
else
CMAKE_SYSTEM_PROCESSOR = $(BR2_ARCH)
endif
# In order to allow the toolchain to be relocated, we calculate the HOST_DIR
# based on the toolchainfile.cmake file's location: $(HOST_DIR)/usr/share/buildroot
# In all the other variables, HOST_DIR will be replaced by RELOCATED_HOST_DIR,
# so we have to strip "$(HOST_DIR)/" from the paths that contain it.
$(HOST_DIR)/usr/share/buildroot/toolchainfile.cmake:
@mkdir -p $(@D)
sed \
-e 's:@@STAGING_SUBDIR@@:$(call qstrip,$(STAGING_SUBDIR)):' \
-e 's:@@TARGET_CFLAGS@@:$(call qstrip,$(TARGET_CFLAGS)):' \
-e 's:@@TARGET_CXXFLAGS@@:$(call qstrip,$(TARGET_CXXFLAGS)):' \
-e 's:@@TARGET_LDFLAGS@@:$(call qstrip,$(TARGET_LDFLAGS)):' \
-e 's:@@TARGET_CC_NOCCACHE@@:$(subst $(HOST_DIR)/,,$(call qstrip,$(TARGET_CC_NOCCACHE))):' \
-e 's:@@TARGET_CXX_NOCCACHE@@:$(subst $(HOST_DIR)/,,$(call qstrip,$(TARGET_CXX_NOCCACHE))):' \
-e 's:@@CMAKE_SYSTEM_PROCESSOR@@:$(call qstrip,$(CMAKE_SYSTEM_PROCESSOR)):' \
$(TOPDIR)/support/misc/toolchainfile.cmake.in \
> $@
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