| # 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_sse4 ON) |
| endif() |
| 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() |