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#----------------------------------------------------------------------------
# Copyright (c) 2021 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
#
# http://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.
#----------------------------------------------------------------------------
# specify the cross compiler
set(CMAKE_C_COMPILER armclang)
set(CMAKE_CXX_COMPILER armclang)
set(CMAKE_C_LINKER_PREFERENCE armlink)
set(CMAKE_ASM_LINKER_PREFERENCE armlink)
set(CMAKE_ASM_COMPILER armasm)
set(CMAKE_ASM_COMPILER_AR armar)
set(CMAKE_CROSSCOMPILING true)
set(CMAKE_SYSTEM_NAME Generic)
set(MIN_ARM_CLANG_VERSION 6.14)
if (NOT DEFINED CMAKE_SYSTEM_PROCESSOR)
set(CMAKE_SYSTEM_PROCESSOR cortex-m55)
endif()
# Skip compiler test execution
set(CMAKE_C_COMPILER_WORKS 1)
set(CMAKE_CXX_COMPILER_WORKS 1)
set(PLATFORM_HAL 1)
set(WARNING_OPTS "-Wall -Wextra -Wvla")
set(SPECIAL_OPTS "-fno-rtti -funsigned-char -fno-function-sections -fno-exceptions")
set(PLATFORM_FLAGS "-mthumb --target=arm-arm-non-eabi -mlittle-endian -DPLATFORM_HAL=${PLATFORM_HAL}")
set(CMAKE_C_FLAGS_DEBUG "-DDEBUG -O0")
set(CMAKE_C_FLAGS_RELEASE "-DNDEBUG -O3")
set(CMAKE_CXX_FLAGS_DEBUG "-DDEBUG -O0")
set(CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG -O3")
if (CMAKE_SYSTEM_PROCESSOR STREQUAL cortex-m55)
# Flags for cortex-m55
set(CPU_CORTEX_M55 1)
set(CPU_CC "-mcpu=cortex-m55 -mfloat-abi=hard -MD -DCPU_CORTEX_M55=1 -DARM_MATH_DSP -DARM_MATH_LOOPUNROLL -D__FPU_USED=1")
set(CPU_LD "--cpu=8.1-M.Main.dsp")
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL cortex-m33)
# Flags for cortex-m33 to go here
endif()
set(ALL_COMMON_FLAGS "${CPU_CC} ${WARNING_OPTS} ${SPECIAL_OPTS} ${PLATFORM_FLAGS}")
function(enforce_compiler_version)
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${MIN_ARM_CLANG_VERSION})
message( FATAL_ERROR "Arm compiler version must be ${MIN_ARM_CLANG_VERSION} or greater to support ${CMAKE_SYSTEM_PROCESSOR} architecture." )
endif()
endfunction()
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