53 lines
1.8 KiB
CMake
53 lines
1.8 KiB
CMake
# Copyright 2019 The libgav1 Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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if(LIBGAV1_CMAKE_LIBGAV1_CPU_DETECTION_CMAKE_)
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return()
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endif() # LIBGAV1_CMAKE_LIBGAV1_CPU_DETECTION_CMAKE_
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set(LIBGAV1_CMAKE_LIBGAV1_CPU_DETECTION_CMAKE_ 1)
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# Detect optimizations available for the current target CPU.
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macro(libgav1_optimization_detect)
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if(LIBGAV1_ENABLE_OPTIMIZATIONS)
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string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" cpu_lowercase)
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if(cpu_lowercase MATCHES "^arm|^aarch64")
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set(libgav1_have_neon ON)
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elseif(cpu_lowercase MATCHES "^x86|amd64")
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set(libgav1_have_avx2 ON)
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set(libgav1_have_sse4 ON)
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endif()
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endif()
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if(libgav1_have_avx2 AND LIBGAV1_ENABLE_AVX2)
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list(APPEND libgav1_defines "LIBGAV1_ENABLE_AVX2=1")
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else()
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list(APPEND libgav1_defines "LIBGAV1_ENABLE_AVX2=0")
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set(libgav1_have_avx2 OFF)
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endif()
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if(libgav1_have_neon AND LIBGAV1_ENABLE_NEON)
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list(APPEND libgav1_defines "LIBGAV1_ENABLE_NEON=1")
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else()
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list(APPEND libgav1_defines "LIBGAV1_ENABLE_NEON=0")
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set(libgav1_have_neon, OFF)
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endif()
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if(libgav1_have_sse4 AND LIBGAV1_ENABLE_SSE4_1)
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list(APPEND libgav1_defines "LIBGAV1_ENABLE_SSE4_1=1")
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else()
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list(APPEND libgav1_defines "LIBGAV1_ENABLE_SSE4_1=0")
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set(libgav1_have_sse4 OFF)
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endif()
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endmacro()
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