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Merge topic 'cxx-features-check-always'

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f74f01fe Check C++ features even without CMAKE_CXX_STANDARD for CMake itself

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !870
This commit is contained in:
Brad King 2017-05-22 14:35:08 +00:00 committed by Kitware Robot
commit a748916f5e
1 changed files with 16 additions and 13 deletions
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29
Source/Checks/cm_cxx_features.cmake
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@ -3,10 +3,15 @@ function(cm_check_cxx_feature name)
string(TOUPPER ${name} FEATURE)
if(NOT DEFINED CMake_HAVE_CXX_${FEATURE})
message(STATUS "Checking if compiler supports C++ ${name}")
if(CMAKE_CXX_STANDARD)
set(maybe_cxx_standard -DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD})
else()
set(maybe_cxx_standard "")
endif()
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}
CMAKE_FLAGS ${maybe_cxx_standard}
OUTPUT_VARIABLE OUTPUT
)
# If using the feature causes warnings, treat it as broken/unavailable.
@ -31,16 +36,14 @@ function(cm_check_cxx_feature name)
endif()
endfunction()
if(CMAKE_CXX_STANDARD)
cm_check_cxx_feature(auto_ptr)
cm_check_cxx_feature(eq_delete)
cm_check_cxx_feature(make_unique)
if(CMake_HAVE_CXX_MAKE_UNIQUE)
set(CMake_HAVE_CXX_UNIQUE_PTR 1)
endif()
cm_check_cxx_feature(nullptr)
cm_check_cxx_feature(override)
cm_check_cxx_feature(unique_ptr)
cm_check_cxx_feature(unordered_map)
cm_check_cxx_feature(unordered_set)
cm_check_cxx_feature(auto_ptr)
cm_check_cxx_feature(eq_delete)
cm_check_cxx_feature(make_unique)
if(CMake_HAVE_CXX_MAKE_UNIQUE)
set(CMake_HAVE_CXX_UNIQUE_PTR 1)
endif()
cm_check_cxx_feature(nullptr)
cm_check_cxx_feature(override)
cm_check_cxx_feature(unique_ptr)
cm_check_cxx_feature(unordered_map)
cm_check_cxx_feature(unordered_set)