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cmake: use upstream PCH support if possible

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This commit is contained in:
Pavel Rojtberg 2022-09-17 13:04:22 +02:00
parent 8b0aa6a64d
commit c0ecf08ca0
1 changed files with 5 additions and 2 deletions
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7
cmake/OpenCVPCHSupport.cmake
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@ -331,7 +331,8 @@ ENDMACRO(ADD_PRECOMPILED_HEADER)
MACRO(GET_NATIVE_PRECOMPILED_HEADER _targetName _input)
if(ENABLE_PRECOMPILED_HEADERS)
if(CMAKE_GENERATOR MATCHES "^Visual.*$")
if(CMAKE_GENERATOR MATCHES "^Visual.*$"
AND (CMAKE_VERSION VERSION_LESS "3.16" OR OPENCV_SKIP_CMAKE_BUILTIN_PCH)) # with 3.16+ we use target_precompile_headers
set(${_targetName}_pch ${CMAKE_CURRENT_BINARY_DIR}/${_targetName}_pch.cpp)
endif()
endif()
@ -406,7 +407,9 @@ ENDMACRO(ADD_NATIVE_PRECOMPILED_HEADER)
macro(ocv_add_precompiled_header_to_target the_target pch_header)
if(PCHSupport_FOUND AND ENABLE_PRECOMPILED_HEADERS AND EXISTS "${pch_header}")
if(CMAKE_GENERATOR MATCHES "^Visual" OR CMAKE_GENERATOR MATCHES Xcode)
if(NOT CMAKE_VERSION VERSION_LESS "3.16" AND NOT OPENCV_SKIP_CMAKE_BUILTIN_PCH)
target_precompile_headers(${the_target} PRIVATE ${pch_header})
elseif(CMAKE_GENERATOR MATCHES "^Visual" OR CMAKE_GENERATOR MATCHES Xcode)
add_native_precompiled_header(${the_target} ${pch_header})
elseif(CV_GCC AND CMAKE_GENERATOR MATCHES "Makefiles|Ninja")
add_precompiled_header(${the_target} ${pch_header})