110 lines
4.3 KiB
CMake
110 lines
4.3 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
# FindTargetTools module for locating a set of tools to use on the host but
|
|
# targeting a remote target for Zephyr development.
|
|
#
|
|
# This module will lookup following target tools for Zephyr development:
|
|
# +---------------------------------------------------------------+
|
|
# | Tool | Required | Notes: |
|
|
# +---------------------------------------------------------------+
|
|
# | Target C-compiler | Yes | |
|
|
# | Target Assembler | Yes | |
|
|
# | Target linker | Yes | |
|
|
# +---------------------------------------------------------------+
|
|
#
|
|
# The module defines the following variables:
|
|
#
|
|
# 'CMAKE_C_COMPILER'
|
|
# Path to target C compiler.
|
|
# Set to 'CMAKE_C_COMPILER-NOTFOUND' if no C compiler was found.
|
|
#
|
|
# 'TargetTools_FOUND', 'TARGETTOOLS_FOUND'
|
|
# True if all required host tools were found.
|
|
|
|
find_package(HostTools)
|
|
|
|
if(TargetTools_FOUND)
|
|
return()
|
|
endif()
|
|
|
|
# Prevent CMake from testing the toolchain
|
|
set(CMAKE_C_COMPILER_FORCED 1)
|
|
set(CMAKE_CXX_COMPILER_FORCED 1)
|
|
|
|
# https://cmake.org/cmake/help/latest/variable/CMAKE_SYSTEM_NAME.html:
|
|
# The name of the operating system for which CMake is to build.
|
|
#
|
|
# https://gitlab.kitware.com/cmake/community/wikis/doc/cmake/CrossCompiling:
|
|
# CMAKE_SYSTEM_NAME : this one is mandatory, it is the name of the target
|
|
# system, i.e. the same as CMAKE_SYSTEM_NAME would have if CMake would run
|
|
# on the target system. Typical examples are "Linux" and "Windows". This
|
|
# variable is used for constructing the file names of the platform files
|
|
# like Linux.cmake or Windows-gcc.cmake. If your target is an embedded
|
|
# system without OS set CMAKE_SYSTEM_NAME to "Generic".
|
|
set(CMAKE_SYSTEM_NAME Generic)
|
|
|
|
# https://cmake.org/cmake/help/latest/variable/CMAKE_SYSTEM_PROCESSOR.html:
|
|
# The name of the CPU CMake is building for.
|
|
#
|
|
# https://gitlab.kitware.com/cmake/community/wikis/doc/cmake/CrossCompiling:
|
|
# CMAKE_SYSTEM_PROCESSOR : optional, processor (or hardware) of the
|
|
# target system. This variable is not used very much except for one
|
|
# purpose, it is used to load a
|
|
# CMAKE_SYSTEM_NAME-compiler-CMAKE_SYSTEM_PROCESSOR.cmake file,
|
|
# which can be used to modify settings like compiler flags etc. for
|
|
# the target
|
|
set(CMAKE_SYSTEM_PROCESSOR ${ARCH})
|
|
|
|
# https://cmake.org/cmake/help/latest/variable/CMAKE_SYSTEM_VERSION.html:
|
|
# When the CMAKE_SYSTEM_NAME variable is set explicitly to enable cross
|
|
# compiling then the value of CMAKE_SYSTEM_VERSION must also be set
|
|
# explicitly to specify the target system version.
|
|
set(CMAKE_SYSTEM_VERSION ${PROJECT_VERSION})
|
|
|
|
# https://cmake.org/cmake/help/latest/variable/CMAKE_LANG_BYTE_ORDER.html
|
|
# Byte order of <LANG> compiler target architecture, if known.
|
|
#
|
|
# Zephyr Kconfig defines BIG_ENDIAN according to arch, SoC, Board, so propagate
|
|
# this setting to allow users to read the standard CMake variable or use
|
|
# 'test_big_endian()' function.
|
|
if(CONFIG_BIG_ENDIAN)
|
|
set(CMAKE_C_BYTE_ORDER BIG_ENDIAN)
|
|
set(CMAKE_CXX_BYTE_ORDER BIG_ENDIAN)
|
|
else()
|
|
set(CMAKE_C_BYTE_ORDER LITTLE_ENDIAN)
|
|
set(CMAKE_CXX_BYTE_ORDER LITTLE_ENDIAN)
|
|
endif()
|
|
|
|
# Do not build dynamically loadable libraries by default
|
|
set(BUILD_SHARED_LIBS OFF)
|
|
|
|
# Custom targets for compiler and linker flags.
|
|
add_custom_target(asm)
|
|
add_custom_target(compiler)
|
|
add_custom_target(compiler-cpp)
|
|
add_custom_target(linker)
|
|
|
|
if(NOT (COMPILER STREQUAL "host-gcc"))
|
|
include(${TOOLCHAIN_ROOT}/cmake/toolchain/${ZEPHYR_TOOLCHAIN_VARIANT}/target.cmake)
|
|
endif()
|
|
|
|
# The 'generic' compiler and the 'target' compiler might be different,
|
|
# so we unset the 'generic' one and thereby force the 'target' to
|
|
# re-set it.
|
|
unset(CMAKE_C_COMPILER)
|
|
unset(CMAKE_C_COMPILER CACHE)
|
|
|
|
# A toolchain consist of a compiler and a linker.
|
|
# In Zephyr, toolchains require a port under cmake/toolchain/.
|
|
# Each toolchain port must set COMPILER and LINKER.
|
|
# E.g. toolchain/llvm may pick {clang, ld} or {clang, lld}.
|
|
add_custom_target(bintools)
|
|
|
|
include(${TOOLCHAIN_ROOT}/cmake/compiler/${COMPILER}/target.cmake OPTIONAL)
|
|
include(${TOOLCHAIN_ROOT}/cmake/linker/${LINKER}/target.cmake OPTIONAL)
|
|
include(${ZEPHYR_BASE}/cmake/bintools/bintools_template.cmake)
|
|
include(${TOOLCHAIN_ROOT}/cmake/bintools/${BINTOOLS}/target.cmake OPTIONAL)
|
|
|
|
set(TargetTools_FOUND TRUE)
|
|
set(TARGETTOOLS_FOUND TRUE)
|