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cmake: Enable C++11 standards support
This patch checks for, and enables C++11 support for building UPM. This should work for all cmake versions currently supported by UPM (2.8.11+), and any compiler (clang/gcc) that was released in this decade. Support can be specifically disabled by passing '-DENABLECXX11=OFF' to cmake, though modules requiring this support will not build. C++11 support is enabled by default. Signed-off-by: Jon Trulson <jtrulson@ics.com> Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
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@ -58,6 +58,7 @@ option (BUILDSWIGJAVA "Build swig java modules" OFF)
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option (IPK "Generate IPK using CPack" OFF)
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option (RPM "Generate RPM using CPack" OFF)
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option (BUILDTESTS "Generate check-ups for upm" ON)
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option (ENABLECXX11 "Enable C++11 standards support" ON)
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# Find swig
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if (BUILDSWIG)
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@ -76,6 +77,27 @@ include (TargetArch)
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target_architecture (DETECTED_ARCH)
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message( INFO " - Target arch is ${DETECTED_ARCH}")
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# enable c++11 standards support
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if (ENABLECXX11)
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include(CheckCXXCompilerFlag)
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if (CMAKE_VERSION VERSION_LESS "3.1")
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CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
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CHECK_CXX_COMPILER_FLAG("-std=c++0x" COMPILER_SUPPORTS_CXX0X)
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if (COMPILER_SUPPORTS_CXX11)
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
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elseif (COMPILER_SUPPORTS_CXX0X)
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
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else()
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message(WARNING "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please update your C++ compiler.")
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endif()
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else()
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# 3.1+ uses this generic method to enable c++11
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set (CMAKE_CXX_STANDARD 11)
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endif()
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else()
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message(WARNING "Some modules require C++11 support, and may not build without it.")
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endif()
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if (BUILDDOC)
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# Add a target to generate API documentation with Doxygen
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find_package (Doxygen)
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