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Merge remote-tracking branch 'upstream/3.4' into merge-3.4

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This commit is contained in:
Alexander Alekhin
2020-01-22 16:58:30 +03:00
parent 8b3042da63 3019927a61
commit 3d14dd4e39
32 changed files with 1151 additions and 94 deletions
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cmake/OpenCVCompilerOptions.cmake
+15
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@@ -318,6 +318,21 @@ if(PPC64LE)
endif()
endif()
# Apply "-Wl,--as-needed" linker flags: https://github.com/opencv/opencv/issues/7001
if(NOT OPENCV_SKIP_LINK_AS_NEEDED)
if(UNIX AND (NOT APPLE OR NOT CMAKE_VERSION VERSION_LESS "3.2"))
set(_option "-Wl,--as-needed")
set(_saved_CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${_option}") # requires CMake 3.2+ and CMP0056
ocv_check_compiler_flag(CXX "" HAVE_LINK_AS_NEEDED)
set(CMAKE_EXE_LINKER_FLAGS "${_saved_CMAKE_EXE_LINKER_FLAGS}")
if(HAVE_LINK_AS_NEEDED)
set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} ${_option}")
set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} ${_option}")
endif()
endif()
endif()
# combine all "extra" options
if(NOT OPENCV_SKIP_EXTRA_COMPILER_FLAGS)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OPENCV_EXTRA_FLAGS} ${OPENCV_EXTRA_C_FLAGS}")