Zengtudor/pybind11
1
0
Fork 0
mirror of https://github.com/pybind/pybind11.git synced 2024-11-25 06:35:12 +00:00
Code Issues Packages Projects Releases Wiki Activity

Utilize CMake's language standards abstraction when possible

Browse Source
This commit is contained in:
Chuck Atkins 2018-06-12 13:18:48 -04:00 committed by Wenzel Jakob
parent f6e543b15e
commit d730fbc0d5
1 changed files with 25 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
tools/pybind11Tools.cmake
View File

@ -18,24 +18,40 @@ find_package(PythonLibsNew ${PYBIND11_PYTHON_VERSION} REQUIRED)
include(CheckCXXCompilerFlag) include(CheckCXXCompilerFlag)
include(CMakeParseArguments) include(CMakeParseArguments)
if(NOT PYBIND11_CPP_STANDARD AND NOT CMAKE_CXX_STANDARD) # Use the language standards abstraction if CMake supports it with the current compiler
if(NOT MSVC) if(NOT CMAKE_VERSION VERSION_LESS 3.1)
check_cxx_compiler_flag("-std=c++14" HAS_CPP14_FLAG) if(NOT CMAKE_CXX_STANDARD)
if(CMAKE_CXX14_STANDARD_COMPILE_OPTION)
set(CMAKE_CXX_STANDARD 14)
elseif(CMAKE_CXX11_STANDARD_COMPILE_OPTION)
set(CMAKE_CXX_STANDARD 11)
endif()
endif()
if(CMAKE_CXX_STANDARD)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
endif()
endif()
if (HAS_CPP14_FLAG) # Fall back to heuristics
if(NOT PYBIND11_CPP_STANDARD AND NOT CMAKE_CXX_STANDARD)
if(MSVC)
set(PYBIND11_CPP_STANDARD /std:c++14)
else()
check_cxx_compiler_flag("-std=c++14" HAS_CPP14_FLAG)
if(HAS_CPP14_FLAG)
set(PYBIND11_CPP_STANDARD -std=c++14) set(PYBIND11_CPP_STANDARD -std=c++14)
else() else()
check_cxx_compiler_flag("-std=c++11" HAS_CPP11_FLAG) check_cxx_compiler_flag("-std=c++11" HAS_CPP11_FLAG)
if (HAS_CPP11_FLAG) if(HAS_CPP11_FLAG)
set(PYBIND11_CPP_STANDARD -std=c++11) set(PYBIND11_CPP_STANDARD -std=c++11)
else()
message(FATAL_ERROR "Unsupported compiler -- pybind11 requires C++11 support!")
endif() endif()
endif() endif()
elseif(MSVC)
set(PYBIND11_CPP_STANDARD /std:c++14)
endif() endif()
if(NOT PYBIND11_CPP_STANDARD)
message(FATAL_ERROR "Unsupported compiler -- pybind11 requires C++11 support!")
endif()
set(PYBIND11_CPP_STANDARD ${PYBIND11_CPP_STANDARD} CACHE STRING set(PYBIND11_CPP_STANDARD ${PYBIND11_CPP_STANDARD} CACHE STRING
"C++ standard flag, e.g. -std=c++11, -std=c++14, /std:c++14. Defaults to C++14 mode." FORCE) "C++ standard flag, e.g. -std=c++11, -std=c++14, /std:c++14. Defaults to C++14 mode." FORCE)
endif() endif()