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| author | Orgad Shaneh <orgad.shaneh@audiocodes.com> | 2022-10-22 13:48:25 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-10-22 12:48:25 +0200 |
| commit | e63107523915be883025836426fcdd96b97c22fa (patch) | |
| tree | 80e0651381051bbb434ab90ce121ad535bdabac7 | |
| parent | b53afeb556d55576ed3683fef6566361464393d5 (diff) | |
| download | ccache-e63107523915be883025836426fcdd96b97c22fa.tar.gz | |
build: Support compilation with GCC 8 (#1190)
See https://discourse.cmake.org/t/correct-way-to-link-std-filesystem-with-gcc-8/4121
| -rw-r--r-- | cmake/StandardSettings.cmake | 1 | ||||
| -rw-r--r-- | cmake/StdFilesystem.cmake | 26 |
2 files changed, 27 insertions, 0 deletions
diff --git a/cmake/StandardSettings.cmake b/cmake/StandardSettings.cmake index 83871af8..9e09ea67 100644 --- a/cmake/StandardSettings.cmake +++ b/cmake/StandardSettings.cmake @@ -54,6 +54,7 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "^GNU|(Apple)?Clang$") endforeach() include(StdAtomic) + include(StdFilesystem) elseif(MSVC) target_compile_options( diff --git a/cmake/StdFilesystem.cmake b/cmake/StdFilesystem.cmake new file mode 100644 index 00000000..ca451ce7 --- /dev/null +++ b/cmake/StdFilesystem.cmake @@ -0,0 +1,26 @@ +# Check if std::filesystem needs -lstdc++fs + +include(CheckCXXSourceCompiles) + +set( + check_std_filesystem_source_code + [=[ + #include <filesystem> + int main(void) + { + return std::filesystem::is_regular_file(\"/\") ? 0 : 1; + } + ]=]) + +check_cxx_source_compiles("${check_std_filesystem_source_code}" std_filesystem_without_libfs) + +if(NOT std_filesystem_without_libfs) + set(CMAKE_REQUIRED_LIBRARIES stdc++fs) + check_cxx_source_compiles("${check_std_filesystem_source_code}" std_filesystem_with_libfs) + set(CMAKE_REQUIRED_LIBRARIES) + if(NOT std_filesystem_with_libfs) + message(FATAL_ERROR "Toolchain doesn't support std::filesystem with nor without -lstdc++fs") + else() + target_link_libraries(standard_settings INTERFACE stdc++fs) + endif() +endif() |