Revert "Don't expect the UDL definition for GCC < 4.9
This reverts commit 4d654c09e5.
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c282648961
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@ -177,12 +177,6 @@ set(CMAKE_REQUIRED_FLAGS )
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if (NOT SUPPORTS_USER_DEFINED_LITERALS)
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if (NOT SUPPORTS_USER_DEFINED_LITERALS)
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set (SUPPORTS_USER_DEFINED_LITERALS OFF)
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set (SUPPORTS_USER_DEFINED_LITERALS OFF)
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endif ()
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endif ()
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if (SUPPORTS_USER_DEFINED_LITERALS AND CMAKE_COMPILER_IS_GNUCXX)
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# GCC before 4.9 is not supported for user-defined literals as it requires an
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# invalid syntax in their definition.
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set (SUPPORTS_USER_DEFINED_LITERALS
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$<IF:$<$<VERSION_LESS:$<CXX_COMPILER_VERSION>,4.9.0>,OFF,ON>
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endif()
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# Make sure that compiler features detected in the header
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# Make sure that compiler features detected in the header
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# match the features detected in CMake.
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# match the features detected in CMake.
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