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make the c++-2011 feature set of GCC 4.4 mandatory

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we now produce an error even if the module in question does not
actually use some of these features.
This commit is contained in:
Andreas Lauser 2013-07-30 17:43:01 +02:00
parent e6cf509ea9
commit bec3d5db2c
1 changed files with 41 additions and 0 deletions
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41
cmake/Modules/FindCXX11Features.cmake
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@ -291,3 +291,44 @@ foreach(_HEADER tuple tr1/tuple type_traits tr1/type_traits)
string(TOUPPER ${_HEADER_VAR} _HEADER_VAR )
check_include_file_cxx(${_HEADER} "HAVE_${_HEADER_VAR}")
endforeach(_HEADER tuple tr1/tuple tr1/type_traits)
# make sure that the C++-11 features implemented by the compiler are a
# superset of those provided by GCC 4.4. This makes the test fail on
# all GCC compilers before 4.4.
set(CXX_FEATURES_MISSING "")
if (NOT HAVE_ARRAY)
set(CXX_FEATURES_MISSING
"${CXX_FEATURES_MISSING} - Statically sized arrays (the std::array class)\n")
endif()
if (NOT HAVE_STATIC_ASSERT)
set(CXX_FEATURES_MISSING
"${CXX_FEATURES_MISSING} - Static assertations (the static_assert() mechanism)\n")
endif()
if (NOT HAVE_AUTO)
set(CXX_FEATURES_MISSING
"${CXX_FEATURES_MISSING} - Automatically typed variables (the 'auto' keyword)\n")
endif()
if (NOT HAVE_VARIADIC_TEMPLATES)
set(CXX_FEATURES_MISSING
"${CXX_FEATURES_MISSING} - Variable number of template arguments\n")
endif()
if (NOT HAVE_VARIADIC_CONSTRUCTOR_SFINAE)
set(CXX_FEATURES_MISSING
"${CXX_FEATURES_MISSING} - Constructors with variable number of template arguments obeying the SFINAE (specialization failure is not an error) rule\n")
endif()
if (NOT HAVE_RVALUE_REFERENCES)
set(CXX_FEATURES_MISSING
"${CXX_FEATURES_MISSING} - References to rvalue objects\n")
endif()
if (NOT HAVE_TUPLE)
set(CXX_FEATURES_MISSING
"${CXX_FEATURES_MISSING} - Tuples (the std::tuple class)\n")
endif()
if(CXX_FEATURES_MISSING)
message(FATAL_ERROR
"Your C++ compiler does not support the minimum set of C++-2011 features required. "
"Make sure to use a compiler which implements all C++-2011 features provided by GCC 4.4. "
"Your compiler does not seem to implement the following features:\n"
"${CXX_FEATURES_MISSING}")
endif()