| # |
| # Copyright (c) 2019-2020 Arm Limited. All rights reserved. |
| # |
| # SPDX-License-Identifier: Apache-2.0 |
| # |
| # Licensed under the Apache License, Version 2.0 (the License); you may |
| # not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an AS IS BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| if (__TOOLCHAIN_LOADED) |
| return() |
| endif() |
| set(__TOOLCHAIN_LOADED TRUE) |
| |
| set(CMAKE_SYSTEM_NAME Generic) |
| set(CMAKE_C_COMPILER "arm-none-eabi-gcc") |
| set(CMAKE_CXX_COMPILER "arm-none-eabi-g++") |
| set(CMAKE_SYSTEM_PROCESSOR "cortex-m33+nodsp" CACHE STRING "Select Cortex-M architure. (cortex-m0, cortex-m3, cortex-m33, cortex-m4, cortex-m55, cortex-m7, etc)") |
| |
| set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY) |
| |
| 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_C_STANDARD 99) |
| set(CMAKE_CXX_STANDARD 14) |
| |
| # The system processor could for example be set to cortex-m33+nodsp+nofp. |
| set(__CPU_COMPILE_TARGET ${CMAKE_SYSTEM_PROCESSOR}) |
| string(REPLACE "+" ";" __CPU_FEATURES ${__CPU_COMPILE_TARGET}) |
| list(POP_FRONT __CPU_FEATURES CMAKE_SYSTEM_PROCESSOR) |
| |
| string(FIND ${__CPU_COMPILE_TARGET} "+" __OFFSET) |
| if(__OFFSET GREATER_EQUAL 0) |
| string(SUBSTRING ${__CPU_COMPILE_TARGET} ${__OFFSET} -1 CPU_FEATURES) |
| endif() |
| |
| # Add -mcpu to the compile options to override the -mcpu the CMake toolchain adds |
| add_compile_options(-mcpu=${__CPU_COMPILE_TARGET}) |
| |
| # Set floating point unit |
| if("${__CPU_COMPILE_TARGET}" MATCHES "\\+fp") |
| set(FLOAT hard) |
| elseif("${__CPU_COMPILE_TARGET}" MATCHES "\\+nofp") |
| set(FLOAT soft) |
| elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "cortex-m33" OR |
| "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "cortex-m55") |
| set(FLOAT hard) |
| else() |
| set(FLOAT soft) |
| endif() |
| |
| add_compile_options(-mfloat-abi=${FLOAT}) |
| add_link_options(-mfloat-abi=${FLOAT}) |
| |
| # Link target |
| add_link_options(-mcpu=${__CPU_COMPILE_TARGET}) |
| add_link_options(-Xlinker -Map=output.map) |
| |
| # |
| # Compile options |
| # |
| set(cxx_flags "-fno-unwind-tables;-fno-rtti;-fno-exceptions") |
| |
| add_compile_options("-Wall;-Wextra;-Wsign-compare;-Wunused;-Wswitch-default;-Wformat;\ |
| -Wdouble-promotion;-Wredundant-decls;-Wshadow;-Wcast-align;-Wnull-dereference;\ |
| -Wno-format-extra-args;-Wno-unused-function;-Wno-unused-label;\ |
| -Wno-missing-field-initializers;-Wno-return-type" |
| "$<$<COMPILE_LANGUAGE:CXX>:${cxx_flags}>" |
| ) |
| |