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Diffstat (limited to '')
| -rw-r--r-- | cmake/modules/FindStdFilesystem.cmake | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/cmake/modules/FindStdFilesystem.cmake b/cmake/modules/FindStdFilesystem.cmake new file mode 100644 index 00000000..6a6cd029 --- /dev/null +++ b/cmake/modules/FindStdFilesystem.cmake @@ -0,0 +1,51 @@ +set(_std_filesystem_test_src + ${CMAKE_CURRENT_LIST_DIR}/FindStdFilesystem_test.cc) + +macro(try_std_filesystem_library _library _result) + if(CMAKE_VERSION VERSION_LESS "3.8") + # abuse the definition flags, because they are quite + # the same as CMAKE_C_FLAGS: they are passed to the + # compiler. + set(_std_filesystem_try_compile_arg + COMPILE_DEFINITIONS "-std=c++17") + else() + set(_std_filesystem_try_compile_arg + CXX_STANDARD 17) + endif() + try_compile(_std_filesystem_compiles + ${CMAKE_CURRENT_BINARY_DIR} + SOURCES ${_std_filesystem_test_src} + LINK_LIBRARIES ${_library} + ${_std_filesystem_try_compile_arg}) + unset(_std_filesystem_try_compile_arg) + if(_std_filesystem_compiles) + set(${_result} ${_library}) + endif() + unset(_std_filesystem_compiles) +endmacro() + + +if(NOT StdFilesystem_LIBRARY) + try_std_filesystem_library("stdc++fs" StdFilesystem_LIBRARY) +endif() +if(NOT StdFilesystem_LIBRARY) + try_std_filesystem_library("c++experimental" StdFilesystem_LIBRARY) +endif() +if(NOT StdFilesystem_LIBRARY) + try_std_filesystem_library("c++fs" StdFilesystem_LIBRARY) +endif() + +unset(_std_filesystem_test_src) + +include(FindPackageHandleStandardArgs) +find_package_handle_standard_args(StdFilesystem + FOUND_VAR StdFilesystem_FOUND + REQUIRED_VARS StdFilesystem_LIBRARY) + +mark_as_advanced(StdFilesystem_LIBRARY) + +if(StdFilesystem_FOUND AND NOT (TARGET StdFilesystem::filesystem)) + add_library(StdFilesystem::filesystem INTERFACE IMPORTED) + set_target_properties(StdFilesystem::filesystem PROPERTIES + INTERFACE_LINK_LIBRARIES ${StdFilesystem_LIBRARY}) +endif() |