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buildroot/package/pkg-cmake.mk
Yann E. MORIN a0c0bc9d33 package/pkg-cmake: fix late expansion in infra 
Commit 4cf79d9b71 (pkg-cmake: add option to select the Ninja
generator) forgot to account for the late expansion rule in the inner
infrastructure macros, which breaks the build in two ways:

 1. the expansion of $(firstword $$(MAKE)) does not actually expands to
    the first word, but to the full value of $(MAKE);

 2. the paths are invalid for per-package directories.

Fix that by applying the proper double-dollar rule for inner macros.

Reported-by: Thomas Devoogdt <thomas.devoogdt@barco.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2023-08-07 19:37:32 +02:00

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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 = $(HOSTCC_NOCCACHE)
CMAKE_HOST_CXX_COMPILER = $(HOSTCXX_NOCCACHE)
CMAKE_HOST_C_COMPILER_LAUNCHER = $(HOST_DIR)/bin/ccache
CMAKE_HOST_CXX_COMPILER_LAUNCHER = $(HOST_DIR)/bin/ccache
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
$(3)_SUPPORTS_IN_SOURCE_BUILD ?= YES
# The default backend, unless specified by the package
$(3)_CMAKE_BACKEND ?= make
ifeq ($$($(3)_SUPPORTS_IN_SOURCE_BUILD),YES)
$(2)_BUILDDIR = $$($(2)_SRCDIR)
else
$(2)_BUILDDIR = $$($(2)_SRCDIR)/buildroot-build
endif
ifeq ($$($(3)_CMAKE_BACKEND),make)
$(2)_GENERATOR = "Unix Makefiles"
# $$(MAKE) can be 'make -jN', we just want 'make' (possibly with a full path)
$(2)_GENERATOR_PROGRAM = $$(firstword $$(MAKE))
# Generator specific code (make) should be avoided,
# but for now, copy them to the new variables.
$(2)_BUILD_ENV ?= $$($(2)_MAKE_ENV)
$(2)_BUILD_OPTS ?= -- $$($(2)_MAKE_OPTS)
else ifeq ($$($(3)_CMAKE_BACKEND),ninja)
$(2)_DEPENDENCIES += host-ninja
$(2)_GENERATOR = "Ninja"
$(2)_GENERATOR_PROGRAM = $$(HOST_DIR)/bin/ninja
else
$$(error Unsupported cmake backend "$$($(3)_CMAKE_BACKEND)")
endif
#
# Configure step. Only define it if not already defined by the package
# .mk file. And take care of the differences between host and target
# packages.
#
ifndef $(2)_CONFIGURE_CMDS
ifeq ($(4),target)
# Configure package for target
#
# - We are passing BUILD_SHARED_LIBS because it is documented as a
# standard CMake variable to control the build of shared libraries
# (see https://cmake.org/cmake/help/v3.8/manual/cmake-variables.7.html#variables-that-change-behavior)
# - We are not passing BUILD_STATIC_LIBS because it is *not*
# documented as a standard CMake variable. If a package supports it,
# it must handle it explicitly.
#
define $(2)_CONFIGURE_CMDS
(mkdir -p $$($$(PKG)_BUILDDIR) && \
cd $$($$(PKG)_BUILDDIR) && \
rm -f CMakeCache.txt && \
PATH=$$(BR_PATH) \
$$($$(PKG)_CONF_ENV) $$(BR2_CMAKE) $$($$(PKG)_SRCDIR) \
-G$$($$(PKG)_GENERATOR) \
-DCMAKE_MAKE_PROGRAM="$$($$(PKG)_GENERATOR_PROGRAM)" \
-DCMAKE_TOOLCHAIN_FILE="$$(HOST_DIR)/share/buildroot/toolchainfile.cmake" \
-DCMAKE_INSTALL_PREFIX="/usr" \
-DCMAKE_INSTALL_RUNSTATEDIR="/run" \
-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) \
$$(CMAKE_QUIET) \
$$($$(PKG)_CONF_OPTS) \
)
endef
else
# Configure package for host
define $(2)_CONFIGURE_CMDS
(mkdir -p $$($$(PKG)_BUILDDIR) && \
cd $$($$(PKG)_BUILDDIR) && \
rm -f CMakeCache.txt && \
PATH=$$(BR_PATH) \
PKG_CONFIG="$$(PKG_CONFIG_HOST_BINARY)" \
PKG_CONFIG_SYSROOT_DIR="/" \
PKG_CONFIG_LIBDIR="$$(HOST_DIR)/lib/pkgconfig:$$(HOST_DIR)/share/pkgconfig" \
PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 \
PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 \
$$($$(PKG)_CONF_ENV) $$(BR2_CMAKE) $$($$(PKG)_SRCDIR) \
-G$$($$(PKG)_GENERATOR) \
-DCMAKE_MAKE_PROGRAM="$$($$(PKG)_GENERATOR_PROGRAM)" \
-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)" \
-DCMAKE_C_FLAGS="$$(HOST_CFLAGS)" \
-DCMAKE_CXX_FLAGS="$$(HOST_CXXFLAGS)" \
-DCMAKE_EXE_LINKER_FLAGS="$$(HOST_LDFLAGS)" \
-DCMAKE_SHARED_LINKER_FLAGS="$$(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_LAUNCHER),\
-DCMAKE_C_COMPILER_LAUNCHER="$$(CMAKE_HOST_C_COMPILER_LAUNCHER)" \
-DCMAKE_CXX_COMPILER_LAUNCHER="$$(CMAKE_HOST_CXX_COMPILER_LAUNCHER)" \
) \
-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=ON \
$$(CMAKE_QUIET) \
$$($$(PKG)_CONF_OPTS) \
)
endef
endif
endif
# Since some CMake modules (even upstream ones) use pgk_check_modules
# primitives to find {C,LD}FLAGS, add it to the dependency list.
$(2)_DEPENDENCIES += host-pkgconf
$(2)_DEPENDENCIES += $(BR2_CMAKE_HOST_DEPENDENCY)
#
# Build step. Only define it if not already defined by the package .mk
# file.
#
ifndef $(2)_BUILD_CMDS
ifeq ($(4),target)
define $(2)_BUILD_CMDS
$$(TARGET_MAKE_ENV) $$($$(PKG)_BUILD_ENV) $$(BR2_CMAKE) --build $$($$(PKG)_BUILDDIR) -j$(PARALLEL_JOBS) $$($$(PKG)_BUILD_OPTS)
endef
else
define $(2)_BUILD_CMDS
$$(HOST_MAKE_ENV) $$($$(PKG)_BUILD_ENV) $$(BR2_CMAKE) --build $$($$(PKG)_BUILDDIR) -j$(PARALLEL_JOBS) $$($$(PKG)_BUILD_OPTS)
endef
endif
endif
#
# Host installation step. Only define it if not already defined by the
# package .mk file.
#
ifndef $(2)_INSTALL_CMDS
define $(2)_INSTALL_CMDS
$$(HOST_MAKE_ENV) $$($$(PKG)_BUILD_ENV) $$(BR2_CMAKE) --install $$($$(PKG)_BUILDDIR) $$($$(PKG)_INSTALL_OPTS)
endef
endif
#
# Staging installation step. Only define it if not already defined by
# the package .mk file.
#
ifndef $(2)_INSTALL_STAGING_CMDS
define $(2)_INSTALL_STAGING_CMDS
$$(TARGET_MAKE_ENV) $$($$(PKG)_BUILD_ENV) DESTDIR=$$(STAGING_DIR) $$(BR2_CMAKE) --install $$($$(PKG)_BUILDDIR) $$($$(PKG)_INSTALL_STAGING_OPTS)
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
$$(TARGET_MAKE_ENV) $$($$(PKG)_BUILD_ENV) DESTDIR=$$(TARGET_DIR) $$(BR2_CMAKE) --install $$($$(PKG)_BUILDDIR) $$($$(PKG)_INSTALL_TARGET_OPTS)
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
else ifeq ($(BR2_ARM_CPU_ARMV8A),y)
CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT = armv8
endif
ifeq ($(BR2_arm),y)
CMAKE_SYSTEM_PROCESSOR = $(CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT)l
else ifeq ($(BR2_armeb),y)
CMAKE_SYSTEM_PROCESSOR = $(CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT)b
else ifeq ($(call qstrip,$(BR2_ARCH)),powerpc64)
CMAKE_SYSTEM_PROCESSOR = ppc64
else ifeq ($(call qstrip,$(BR2_ARCH)),powerpc64le)
CMAKE_SYSTEM_PROCESSOR = ppc64le
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: $(HOST_DIR)/share/buildroot
# In all the other variables, HOST_DIR will be replaced by RELOCATED_HOST_DIR,
# so we have to strip "$(HOST_DIR)/" from the paths that contain it.
define TOOLCHAIN_CMAKE_INSTALL_FILES
@mkdir -p $(HOST_DIR)/share/buildroot
sed \
-e 's#@@STAGING_SUBDIR@@#$(call qstrip,$(STAGING_SUBDIR))#' \
-e 's#@@TARGET_CFLAGS@@#$(call qstrip,$(TARGET_CFLAGS))#' \
-e 's#@@TARGET_CXXFLAGS@@#$(call qstrip,$(TARGET_CXXFLAGS))#' \
-e 's#@@TARGET_FCFLAGS@@#$(call qstrip,$(TARGET_FCFLAGS))#' \
-e 's#@@TARGET_LDFLAGS@@#$(call qstrip,$(TARGET_LDFLAGS))#' \
-e 's#@@TARGET_CC@@#$(subst $(HOST_DIR)/,,$(call qstrip,$(TARGET_CC)))#' \
-e 's#@@TARGET_CXX@@#$(subst $(HOST_DIR)/,,$(call qstrip,$(TARGET_CXX)))#' \
-e 's#@@TARGET_FC@@#$(subst $(HOST_DIR)/,,$(call qstrip,$(TARGET_FC)))#' \
-e 's#@@CMAKE_SYSTEM_PROCESSOR@@#$(call qstrip,$(CMAKE_SYSTEM_PROCESSOR))#' \
-e 's#@@TOOLCHAIN_HAS_CXX@@#$(if $(BR2_INSTALL_LIBSTDCPP),1,0)#' \
-e 's#@@TOOLCHAIN_HAS_FORTRAN@@#$(if $(BR2_TOOLCHAIN_HAS_FORTRAN),1,0)#' \
-e 's#@@CMAKE_BUILD_TYPE@@#$(if $(BR2_ENABLE_RUNTIME_DEBUG),Debug,Release)#' \
$(TOPDIR)/support/misc/toolchainfile.cmake.in \
> $(HOST_DIR)/share/buildroot/toolchainfile.cmake
$(Q)$(INSTALL) -D -m 0644 support/misc/Buildroot.cmake \
$(HOST_DIR)/share/buildroot/Platform/Buildroot.cmake
endef
TOOLCHAIN_POST_INSTALL_STAGING_HOOKS += TOOLCHAIN_CMAKE_INSTALL_FILES
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