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# Copyright 2019 The libgav1 Authors
#
# 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.
if(LIBGAV1_CMAKE_LIBGAV1_CPU_DETECTION_CMAKE_)
return()
endif() # LIBGAV1_CMAKE_LIBGAV1_CPU_DETECTION_CMAKE_
set(LIBGAV1_CMAKE_LIBGAV1_CPU_DETECTION_CMAKE_ 1)
# Detect optimizations available for the current target CPU.
macro(libgav1_optimization_detect)
if(LIBGAV1_ENABLE_OPTIMIZATIONS)
string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" cpu_lowercase)
if(cpu_lowercase MATCHES "^arm|^aarch64")
set(libgav1_have_neon ON)
elseif(cpu_lowercase MATCHES "^x86|amd64")
set(libgav1_have_avx2 ON)
set(libgav1_have_sse4 ON)
endif()
endif()
if(libgav1_have_avx2 AND LIBGAV1_ENABLE_AVX2)
list(APPEND libgav1_defines "LIBGAV1_ENABLE_AVX2=1")
else()
list(APPEND libgav1_defines "LIBGAV1_ENABLE_AVX2=0")
endif()
if(libgav1_have_neon AND LIBGAV1_ENABLE_NEON)
list(APPEND libgav1_defines "LIBGAV1_ENABLE_NEON=1")
else()
list(APPEND libgav1_defines "LIBGAV1_ENABLE_NEON=0")
endif()
if(libgav1_have_sse4 AND LIBGAV1_ENABLE_SSE4_1)
list(APPEND libgav1_defines "LIBGAV1_ENABLE_SSE4_1=1")
else()
list(APPEND libgav1_defines "LIBGAV1_ENABLE_SSE4_1=0")
endif()
endmacro()
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