diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
| commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
| tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/fmt/support/cmake/cxx14.cmake | |
| parent | Initial commit. (diff) | |
| download | ceph-upstream/16.2.11+ds.tar.xz ceph-upstream/16.2.11+ds.zip | |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/fmt/support/cmake/cxx14.cmake')
| -rw-r--r-- | src/fmt/support/cmake/cxx14.cmake | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/fmt/support/cmake/cxx14.cmake b/src/fmt/support/cmake/cxx14.cmake new file mode 100644 index 000000000..16ff57541 --- /dev/null +++ b/src/fmt/support/cmake/cxx14.cmake @@ -0,0 +1,70 @@ +# C++14 feature support detection + +include(CheckCXXSourceCompiles) +include(CheckCXXCompilerFlag) + +if (NOT CMAKE_CXX_STANDARD) + set(CMAKE_CXX_STANDARD 11) +endif() +message(STATUS "CXX_STANDARD: ${CMAKE_CXX_STANDARD}") + +if (CMAKE_CXX_STANDARD EQUAL 20) + check_cxx_compiler_flag(-std=c++20 has_std_20_flag) + check_cxx_compiler_flag(-std=c++2a has_std_2a_flag) + + if (has_std_20_flag) + set(CXX_STANDARD_FLAG -std=c++20) + elseif (has_std_2a_flag) + set(CXX_STANDARD_FLAG -std=c++2a) + endif () +elseif (CMAKE_CXX_STANDARD EQUAL 17) + check_cxx_compiler_flag(-std=c++17 has_std_17_flag) + check_cxx_compiler_flag(-std=c++1z has_std_1z_flag) + + if (has_std_17_flag) + set(CXX_STANDARD_FLAG -std=c++17) + elseif (has_std_1z_flag) + set(CXX_STANDARD_FLAG -std=c++1z) + endif () +elseif (CMAKE_CXX_STANDARD EQUAL 14) + check_cxx_compiler_flag(-std=c++14 has_std_14_flag) + check_cxx_compiler_flag(-std=c++1y has_std_1y_flag) + + if (has_std_14_flag) + set(CXX_STANDARD_FLAG -std=c++14) + elseif (has_std_1y_flag) + set(CXX_STANDARD_FLAG -std=c++1y) + endif () +elseif (CMAKE_CXX_STANDARD EQUAL 11) + check_cxx_compiler_flag(-std=c++11 has_std_11_flag) + check_cxx_compiler_flag(-std=c++0x has_std_0x_flag) + + if (has_std_11_flag) + set(CXX_STANDARD_FLAG -std=c++11) + elseif (has_std_0x_flag) + set(CXX_STANDARD_FLAG -std=c++0x) + endif () +endif () + +set(CMAKE_REQUIRED_FLAGS ${CXX_STANDARD_FLAG}) + +# Check if user-defined literals are available +check_cxx_source_compiles(" + void operator\"\" _udl(long double); + int main() {}" + SUPPORTS_USER_DEFINED_LITERALS) +if (NOT SUPPORTS_USER_DEFINED_LITERALS) + set (SUPPORTS_USER_DEFINED_LITERALS OFF) +endif () + +# Check if <variant> is available +set(CMAKE_REQUIRED_FLAGS -std=c++1z) +check_cxx_source_compiles(" + #include <variant> + int main() {}" + FMT_HAS_VARIANT) +if (NOT FMT_HAS_VARIANT) + set (FMT_HAS_VARIANT OFF) +endif () + +set(CMAKE_REQUIRED_FLAGS ) |