mirror/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2025-06-12 12:22:51 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #21349 from alalek:cmake_link_no_undefined

Browse Source
This commit is contained in:
Alexander Alekhin 2022-01-20 19:56:17 +00:00
commit e61277002c
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
cmake/OpenCVCompilerOptions.cmake
View File

@ -360,6 +360,22 @@ if(NOT OPENCV_SKIP_LINK_AS_NEEDED)
endif()
endif()
# Apply "-Wl,--no-undefined" linker flags: https://github.com/opencv/opencv/pull/21347
if(NOT OPENCV_SKIP_LINK_NO_UNDEFINED)
if(UNIX AND (NOT APPLE OR NOT CMAKE_VERSION VERSION_LESS "3.2"))
set(_option "-Wl,--no-undefined")
set(_saved_CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${_option}") # requires CMake 3.2+ and CMP0056
ocv_check_compiler_flag(CXX "" HAVE_LINK_NO_UNDEFINED)
set(CMAKE_EXE_LINKER_FLAGS "${_saved_CMAKE_EXE_LINKER_FLAGS}")
if(HAVE_LINK_NO_UNDEFINED)
set(OPENCV_EXTRA_EXE_LINKER_FLAGS "${OPENCV_EXTRA_EXE_LINKER_FLAGS} ${_option}")
set(OPENCV_EXTRA_SHARED_LINKER_FLAGS "${OPENCV_EXTRA_SHARED_LINKER_FLAGS} ${_option}")
set(OPENCV_EXTRA_MODULE_LINKER_FLAGS "${OPENCV_EXTRA_MODULE_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}")