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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.
#----------------------------------------------------------------------------
# CMSIS-DSP library CMake helper script.
# Check if CMSIS sources have been defined
if (NOT DEFINED CMSIS_DSP_SRC_PATH)
message(FATAL_ERROR "CMSIS-DSP path should be defined for CMSIS-DSP library to be built")
endif()
if (NOT DEFINED CMSIS_SRC_PATH)
message(FATAL_ERROR "CMSIS-5 path should be defined to include CMSIS-CORE")
endif()
# 3. Form a list of all the sources we need in CSMS-DSP library
set(CMSIS_DSP_SRC_DIR "${CMSIS_DSP_SRC_PATH}/Source")
set(CMSIS_DSP_INC_DIR "${CMSIS_DSP_SRC_PATH}/Include")
set(CMSIS_DSP_PRI_INC_DIR "${CMSIS_DSP_SRC_PATH}/PrivateInclude")
set(CMSIS_CORE_INC_DIR "${CMSIS_SRC_PATH}/CMSIS/Core/Include")
file(GLOB_RECURSE
CMSIS_DSP_SRC
"${CMSIS_DSP_SRC_DIR}/BasicMathFunctions/arm_*.c"
"${CMSIS_DSP_SRC_DIR}/FastMathFunctions/arm_*.c"
"${CMSIS_DSP_SRC_DIR}/CommonTables/arm_*.c"
"${CMSIS_DSP_SRC_DIR}/TransformFunctions/arm_*.c"
"${CMSIS_DSP_SRC_DIR}/StatisticsFunctions/arm_*.c"
# Issue with q15 and q31 functions with Arm GNU toolchain, we only
# need f32 functions.
"${CMSIS_DSP_SRC_DIR}/ComplexMathFunctions/arm_*f32.c")
# 4. Create static library
set(CMSIS_DSP_TARGET cmsis-dsp)
add_library(${CMSIS_DSP_TARGET} STATIC ${CMSIS_DSP_SRC})
target_include_directories(${CMSIS_DSP_TARGET} PUBLIC
${CMSIS_DSP_INC_DIR}
${CMSIS_CORE_INC_DIR})
target_include_directories(${CMSIS_DSP_TARGET} PRIVATE
${CMSIS_DSP_PRI_INC_DIR})
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
target_compile_options(${CMSIS_DSP_TARGET} PUBLIC -flax-vector-conversions)
# There is a known issue with -O0 optimisation option that affects
# FFT functions from CMSIS-DSP when compiling with Arm GNU embedded
# toolchain version 10.2.1 or 10.3-2021.07
if (CMAKE_BUILD_TYPE STREQUAL Debug)
message(WARNING "There are known issues with CMSIS-DSP builds using "
"MVE extension without optimisation. Forcing -O3 "
"optimisation level")
target_compile_options(${CMSIS_DSP_TARGET} PUBLIC -O3)
endif()
endif ()
# 5. General compile definitions
target_compile_definitions(${CMSIS_DSP_TARGET} PUBLIC ARM_MATH_LOOPUNROLL)
# 6. Provide the library path for the top level CMake to use:
set(CMSIS_DSP_LIB "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/lib${CMSIS_DSP_TARGET}.a")
message(STATUS "CMSIS_DSP_LIB set to be generated here: ${CMSIS_DSP_LIB}")
message(STATUS "CMAKE_CURRENT_SOURCE_DIR: " ${CMAKE_CURRENT_SOURCE_DIR})
message(STATUS "*******************************************************")
message(STATUS "Library : " ${CMSIS_DSP_TARGET})
message(STATUS "Build type : " ${CMAKE_BUILD_TYPE})
message(STATUS "TARGET_PLATFORM : " ${TARGET_PLATFORM})
message(STATUS "CMAKE_SYSTEM_PROCESSOR : " ${CMAKE_SYSTEM_PROCESSOR})
message(STATUS "*******************************************************")
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