zephyr/cmake/gcc-m-cpu.cmake
Sebastian Bøe 12f8f76165 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>
2017-11-08 20:00:22 -05:00

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CMake

# Determines what argument to give to -mcpu= based on the
# KConfig'uration and sets this to GCC_M_CPU
if("${ARCH}" STREQUAL "arm")
if (CONFIG_CPU_CORTEX_M0)
set(GCC_M_CPU cortex-m0)
elseif(CONFIG_CPU_CORTEX_M0PLUS)
set(GCC_M_CPU cortex-m0plus)
elseif(CONFIG_CPU_CORTEX_M3)
set(GCC_M_CPU cortex-m3)
elseif(CONFIG_CPU_CORTEX_M4)
set(GCC_M_CPU cortex-m4)
elseif(CONFIG_CPU_CORTEX_M7)
set(GCC_M_CPU cortex-m7)
elseif(CONFIG_CPU_CORTEX_M23)
set(GCC_M_CPU cortex-m23)
elseif(CONFIG_CPU_CORTEX_M33)
set(GCC_M_CPU cortex-m33)
else()
message(FATAL_ERROR "Expected CONFIG_CPU_CORTEX_x to be defined")
endif()
elseif("${ARCH}" STREQUAL "arc")
if(CONFIG_SOC_QUARK_SE_C1000_SS)
set(GCC_M_CPU quarkse_em)
elseif(CONFIG_SOC_EM9D)
set(GCC_M_CPU em4_fpus)
elseif(CONFIG_SOC_EM7D)
set(GCC_M_CPU em4_dmips)
elseif(CONFIG_SOC_EM11D)
set(GCC_M_CPU em4_fpuda)
endif()
endif()