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| author | Daniel Pfeifer <daniel@pfeifer-mail.de> | 2016-06-22 22:16:15 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2016-06-27 14:37:40 (GMT) |
| commit | ea5477e43de4660343897e4669bc5809dc4ddabe (patch) | |
| tree | a368c8573d3b2c24b713e059e87fa1895604eb39 /Source/Checks | |
| parent | 68bb74d9e651fd44ddeeb81caa59096dbf1f0605 (diff) | |
| download | CMake-ea5477e43de4660343897e4669bc5809dc4ddabe.zip CMake-ea5477e43de4660343897e4669bc5809dc4ddabe.tar.gz CMake-ea5477e43de4660343897e4669bc5809dc4ddabe.tar.bz2 | |
Make C++ feature checks extensible
Turn the feature check for cxx11_unordered_map into a function such that
we can use it for other features as well. Drop the 11 suffix, as we may
want to check features from other standards.
Diffstat (limited to 'Source/Checks')
| -rw-r--r-- | Source/Checks/cm_cxx11_unordered_map.cmake | 25 | ||||
| -rw-r--r-- | Source/Checks/cm_cxx_features.cmake | 36 | ||||
| -rw-r--r-- | Source/Checks/cm_cxx_unordered_map.cxx (renamed from Source/Checks/cm_cxx11_unordered_map.cpp) | 0 |
3 files changed, 36 insertions, 25 deletions
diff --git a/Source/Checks/cm_cxx11_unordered_map.cmake b/Source/Checks/cm_cxx11_unordered_map.cmake deleted file mode 100644 index 80fe391..0000000 --- a/Source/Checks/cm_cxx11_unordered_map.cmake +++ /dev/null @@ -1,25 +0,0 @@ - -if(CMAKE_CXX_STANDARD AND NOT DEFINED CMake_HAVE_CXX11_UNORDERED_MAP) - message(STATUS "Checking if compiler supports C++11 unordered_map") - try_compile(CMake_HAVE_CXX11_UNORDERED_MAP - ${CMAKE_CURRENT_BINARY_DIR} - ${CMAKE_CURRENT_LIST_DIR}/cm_cxx11_unordered_map.cpp - CMAKE_FLAGS -DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD} - OUTPUT_VARIABLE OUTPUT - ) - if(CMake_HAVE_CXX11_UNORDERED_MAP) - message(STATUS "Checking if compiler supports C++11 unordered_map - yes") - file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log - "Determining if compiler supports C++11 unordered_map passed with the following output:\n" - "${OUTPUT}\n" - "\n" - ) - else() - message(STATUS "Checking if compiler supports C++11 unordered_map - no") - file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log - "Determining if compiler supports C++11 unordered_map failed with the following output:\n" - "${OUTPUT}\n" - "\n" - ) - endif() -endif() diff --git a/Source/Checks/cm_cxx_features.cmake b/Source/Checks/cm_cxx_features.cmake new file mode 100644 index 0000000..b0ecc4c --- /dev/null +++ b/Source/Checks/cm_cxx_features.cmake @@ -0,0 +1,36 @@ + +function(cm_check_cxx_feature name) + string(TOUPPER ${name} FEATURE) + if(NOT DEFINED CMake_HAVE_CXX_${FEATURE}) + message(STATUS "Checking if compiler supports C++ ${name}") + try_compile(CMake_HAVE_CXX_${FEATURE} + ${CMAKE_CURRENT_BINARY_DIR} + ${CMAKE_CURRENT_LIST_DIR}/cm_cxx_${name}.cxx + CMAKE_FLAGS -DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD} + OUTPUT_VARIABLE OUTPUT + ) + # If using the feature causes warnings, treat it as broken/unavailable. + if(OUTPUT MATCHES "warning") + set(CMake_HAVE_CXX_${FEATURE} OFF CACHE INTERNAL "TRY_COMPILE" FORCE) + endif() + if(CMake_HAVE_CXX_${FEATURE}) + message(STATUS "Checking if compiler supports C++ ${name} - yes") + file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log + "Determining if compiler supports C++ ${name} passed with the following output:\n" + "${OUTPUT}\n" + "\n" + ) + else() + message(STATUS "Checking if compiler supports C++ ${name} - no") + file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log + "Determining if compiler supports C++ ${name} failed with the following output:\n" + "${OUTPUT}\n" + "\n" + ) + endif() + endif() +endfunction() + +if(CMAKE_CXX_STANDARD) + cm_check_cxx_feature(unordered_map) +endif() diff --git a/Source/Checks/cm_cxx11_unordered_map.cpp b/Source/Checks/cm_cxx_unordered_map.cxx index be3de25..be3de25 100644 --- a/Source/Checks/cm_cxx11_unordered_map.cpp +++ b/Source/Checks/cm_cxx_unordered_map.cxx |