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#
# Copyright (c) 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 (NOT TARGET_CPU)
set(TARGET_CPU "cortex-m4")
endif()
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_C_COMPILER "armclang")
set(CMAKE_CXX_COMPILER "armclang")
set(CMAKE_LINKER "armlink")
# Convert TARGET_CPU=Cortex-M33+nofp+nodsp into
# - CMAKE_SYSTEM_PROCESSOR=cortex-m33
# - __CPU_FEATURES=no-fp;no-dsp
string(REPLACE "+" ";" __CPU_FEATURES ${TARGET_CPU})
list(POP_FRONT __CPU_FEATURES CMAKE_SYSTEM_PROCESSOR)
string(TOLOWER ${CMAKE_SYSTEM_PROCESSOR} CMAKE_SYSTEM_PROCESSOR)
# Link target
set(__LINK_TARGET ${CMAKE_SYSTEM_PROCESSOR})
if ("nodsp" IN_LIST __CPU_FEATURES)
string(APPEND __LINK_TARGET ".no_dsp")
endif()
if ("nofp" IN_LIST __CPU_FEATURES)
string(APPEND __LINK_TARGET ".no_fp")
endif()
if (CMAKE_SYSTEM_PROCESSOR STREQUAL "cortex-m55")
set(__LINK_TARGET 8.1-M.Main.dsp)
endif()
# Define C/C++ standards
set(CMAKE_C_STANDARD 99)
set(CMAKE_CXX_STANDARD 14)
# Compile options
add_compile_options(
-mcpu=${TARGET_CPU}
-mthumb
"$<$<CONFIG:DEBUG>:-gdwarf-3>"
"$<$<COMPILE_LANGUAGE:CXX>:-fno-unwind-tables;-fno-rtti;-fno-exceptions>")
# Link options
add_link_options(
--cpu=${__LINK_TARGET}
--lto
--info common,debug,sizes,totals,veneers,unused
--symbols
--diag_suppress=L6439W)
# Compilation warnings
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)
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