71 lines
1.5 KiB
CMake
71 lines
1.5 KiB
CMake
IF (NOT CXX11_FLAGS OR NOT CXX11_FOUND)
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include(CheckCXXSourceCompiles)
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include(FindPackageHandleStandardArgs)
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set(CXX11_FLAG_CANDIDATES
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#Gnu and Intel Linux
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"-std=c++11"
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#Microsoft Visual Studio, and everything that automatically accepts C++11
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" "
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#Intel windows
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"/Qstd=c++0x"
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)
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set(CXX11_TEST_SOURCE
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"
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#include <algorithm>
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#include <utility>
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#include <memory>
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class Matrix {
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public:
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// Initializer lists
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Matrix(int a, int b, int c, int d)
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: data {a, b, c, d}
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{
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// Lambda functions
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std::transform(data, data+4, data,
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[](int x) { return x+1; });
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}
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// rvalue references
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Matrix(Matrix &&rhs) {
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}
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private:
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int data[4];
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};
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int main()
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{
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int n[] {4,7,6,1,2};
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// auto
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for (auto i : n) {
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Matrix mat (3,5,1,2);
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// std::move, unique_ptr
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std::unique_ptr<Matrix> m2(
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new Matrix(std::move(mat)));
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}
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return 0;
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}
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")
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foreach(FLAG ${CXX11_FLAG_CANDIDATES})
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set(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
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set(CMAKE_REQUIRED_FLAGS "${FLAG}")
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unset(CXX11_FLAG_DETECTED CACHE)
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check_cxx_source_compiles("${CXX11_TEST_SOURCE}" CXX11_FLAG_DETECTED)
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set(CMAKE_REQUIRED_FLAGS "${SAFE_CMAKE_REQUIRED_FLAGS}")
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if(CXX11_FLAG_DETECTED)
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set(CXX11_FLAGS_INTERNAL "${FLAG}")
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break()
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endif(CXX11_FLAG_DETECTED)
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endforeach(FLAG ${CXX11_FLAG_CANDIDATES})
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set(CXX11_FLAGS "${CXX11_FLAGS_INTERNAL}")
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find_package_handle_standard_args(CXX11 DEFAULT_MSG CXX11_FLAGS)
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mark_as_advanced(CXX11_FLAGS)
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ENDIF() |