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zephyr/cmake/toolchain.cmake

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Introduce cmake-based rewrite of KBuild Introducing CMake is an important step in a larger effort to make Zephyr easy to use for application developers working on different platforms with different development environment needs. Simplified, this change retains Kconfig as-is, and replaces all Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild offers is replaced by a set of CMake extentions. These extentions have either provided simple one-to-one translations of KBuild features or introduced new concepts that replace KBuild concepts. This is a breaking change for existing test infrastructure and build scripts that are maintained out-of-tree. But for FW itself, no porting should be necessary. For users that just want to continue their work with minimal disruption the following should suffice: Install CMake 3.8.2+ Port any out-of-tree Makefiles to CMake. Learn the absolute minimum about the new command line interface: $ cd samples/hello_world $ mkdir build && cd build $ cmake -DBOARD=nrf52_pca10040 .. $ cd build $ make PR: zephyrproject-rtos#4692 docs: http://docs.zephyrproject.org/getting_started/getting_started.html Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>
2017-10-27 21:43:34 +08:00
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR ${ARCH})
set(BUILD_SHARED_LIBS OFF)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
build: deprecate ZEPHYR_GCC_VARIANT We want to support other toolchain not based on GCC, so the variable is confusing, use ZEPHYR_TOOLCHAIN_VARIANT instead. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2018-02-12 04:36:21 +08:00
# Until we completely deprecate it
if(DEFINED ENV{ZEPHYR_GCC_VARIANT})
message(WARNING "ZEPHYR_GCC_VARIANT is deprecated, please use ZEPHYR_TOOLCHAIN_VARIANT instead")
set(ZEPHYR_TOOLCHAIN_VARIANT $ENV{ZEPHYR_GCC_VARIANT})
endif()
if(NOT ZEPHYR_TOOLCHAIN_VARIANT)
if(DEFINED ENV{ZEPHYR_TOOLCHAIN_VARIANT})
set(ZEPHYR_TOOLCHAIN_VARIANT $ENV{ZEPHYR_TOOLCHAIN_VARIANT})
cmake: Re-introduce support for CROSS_COMPILE CROSS_COMPILE is a KBuild feature that was dropped during the CMake migration. It is now re-introduced. Documentation for it is still lacking, but at least it now behaves as expected. Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2018-01-09 00:06:42 +08:00
elseif(CROSS_COMPILE OR CONFIG_CROSS_COMPILE OR (DEFINED ENV{CROSS_COMPILE}))
build: deprecate ZEPHYR_GCC_VARIANT We want to support other toolchain not based on GCC, so the variable is confusing, use ZEPHYR_TOOLCHAIN_VARIANT instead. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2018-02-12 04:36:21 +08:00
set(ZEPHYR_TOOLCHAIN_VARIANT cross-compile)
cmake: Re-introduce support for CROSS_COMPILE CROSS_COMPILE is a KBuild feature that was dropped during the CMake migration. It is now re-introduced. Documentation for it is still lacking, but at least it now behaves as expected. Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2018-01-09 00:06:42 +08:00
endif()
endif()
build: deprecate ZEPHYR_GCC_VARIANT We want to support other toolchain not based on GCC, so the variable is confusing, use ZEPHYR_TOOLCHAIN_VARIANT instead. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2018-02-12 04:36:21 +08:00
set(ZEPHYR_TOOLCHAIN_VARIANT ${ZEPHYR_TOOLCHAIN_VARIANT} CACHE STRING "Zephyr toolchain variant")
assert(ZEPHYR_TOOLCHAIN_VARIANT "Zephyr toolchain variant invalid: please set the ZEPHYR_TOOLCHAIN_VARIANT-variable")
cmake: Re-introduce support for CROSS_COMPILE CROSS_COMPILE is a KBuild feature that was dropped during the CMake migration. It is now re-introduced. Documentation for it is still lacking, but at least it now behaves as expected. Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2018-01-09 00:06:42 +08:00
build: deprecate ZEPHYR_GCC_VARIANT We want to support other toolchain not based on GCC, so the variable is confusing, use ZEPHYR_TOOLCHAIN_VARIANT instead. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2018-02-12 04:36:21 +08:00
if(CONFIG_ARCH_POSIX OR (ZEPHYR_TOOLCHAIN_VARIANT STREQUAL "host"))
cmake: Re-introduce support for CROSS_COMPILE CROSS_COMPILE is a KBuild feature that was dropped during the CMake migration. It is now re-introduced. Documentation for it is still lacking, but at least it now behaves as expected. Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2018-01-09 00:06:42 +08:00
set(COMPILER host-gcc)
endif()
Introduce cmake-based rewrite of KBuild Introducing CMake is an important step in a larger effort to make Zephyr easy to use for application developers working on different platforms with different development environment needs. Simplified, this change retains Kconfig as-is, and replaces all Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild offers is replaced by a set of CMake extentions. These extentions have either provided simple one-to-one translations of KBuild features or introduced new concepts that replace KBuild concepts. This is a breaking change for existing test infrastructure and build scripts that are maintained out-of-tree. But for FW itself, no porting should be necessary. For users that just want to continue their work with minimal disruption the following should suffice: Install CMake 3.8.2+ Port any out-of-tree Makefiles to CMake. Learn the absolute minimum about the new command line interface: $ cd samples/hello_world $ mkdir build && cd build $ cmake -DBOARD=nrf52_pca10040 .. $ cd build $ make PR: zephyrproject-rtos#4692 docs: http://docs.zephyrproject.org/getting_started/getting_started.html Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>
2017-10-27 21:43:34 +08:00
# Configure the toolchain based on what SDK/toolchain is in use.
cmake: Re-introduce support for CROSS_COMPILE CROSS_COMPILE is a KBuild feature that was dropped during the CMake migration. It is now re-introduced. Documentation for it is still lacking, but at least it now behaves as expected. Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2018-01-09 00:06:42 +08:00
if(NOT (COMPILER STREQUAL "host-gcc"))
toolchain: organise toolchain/compiler files Move toolchain definitions into toolchain/ and move compilers to compilers/ Usage of toolchain- for everything was confusing, there are the actual compiler related definitions and there is the toolchain/SDK related configs, so keeping them separate helps understand the different and prevents confusion. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2018-02-12 04:47:59 +08:00
include(${ZEPHYR_BASE}/cmake/toolchain/${ZEPHYR_TOOLCHAIN_VARIANT}.cmake)
arch: native: Run Zephyr natively in a POSIX OS A new arch (posix) which relies on pthreads to emulate the context switching A new soc for it (inf_clock) which emulates a CPU running at an infinely high clock (so when the CPU is awaken it runs till completion in 0 time) A new board, which provides a trivial system tick timer and irq generation. Origin: Original Fixes #1891 Signed-off-by: Alberto Escolar Piedras <alpi@oticon.com> Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2017-10-03 22:31:55 +08:00
endif()
Introduce cmake-based rewrite of KBuild Introducing CMake is an important step in a larger effort to make Zephyr easy to use for application developers working on different platforms with different development environment needs. Simplified, this change retains Kconfig as-is, and replaces all Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild offers is replaced by a set of CMake extentions. These extentions have either provided simple one-to-one translations of KBuild features or introduced new concepts that replace KBuild concepts. This is a breaking change for existing test infrastructure and build scripts that are maintained out-of-tree. But for FW itself, no porting should be necessary. For users that just want to continue their work with minimal disruption the following should suffice: Install CMake 3.8.2+ Port any out-of-tree Makefiles to CMake. Learn the absolute minimum about the new command line interface: $ cd samples/hello_world $ mkdir build && cd build $ cmake -DBOARD=nrf52_pca10040 .. $ cd build $ make PR: zephyrproject-rtos#4692 docs: http://docs.zephyrproject.org/getting_started/getting_started.html Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>
2017-10-27 21:43:34 +08:00
# Configure the toolchain based on what toolchain technology is used
cmake: toolchain: Misc. comment cleanups Sync the outdated comments with the code. E.g. there is no toolchain-clang.cmake, but there is a toolchain-host-gcc.cmake. Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
2018-01-09 00:05:26 +08:00
# (gcc, host-gcc etc.)
toolchain: organise toolchain/compiler files Move toolchain definitions into toolchain/ and move compilers to compilers/ Usage of toolchain- for everything was confusing, there are the actual compiler related definitions and there is the toolchain/SDK related configs, so keeping them separate helps understand the different and prevents confusion. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2018-02-12 04:47:59 +08:00
include(${ZEPHYR_BASE}/cmake/compiler/${COMPILER}.cmake OPTIONAL)