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-rw-r--r--Modules/Compiler/GNU-CXX-FeatureTests.cmake20
1 files changed, 20 insertions, 0 deletions
diff --git a/Modules/Compiler/GNU-CXX-FeatureTests.cmake b/Modules/Compiler/GNU-CXX-FeatureTests.cmake
index c65c22c..9c98e44 100644
--- a/Modules/Compiler/GNU-CXX-FeatureTests.cmake
+++ b/Modules/Compiler/GNU-CXX-FeatureTests.cmake
@@ -2,6 +2,26 @@
# Reference: http://gcc.gnu.org/projects/cxx0x.html
set(_cmake_oldestSupported "(__GNUC__ * 100 + __GNUC_MINOR__) >= 407")
+
+set(GNU49_CXX14 "(__GNUC__ * 100 + __GNUC_MINOR__) >= 409 && __cplusplus > 201103L")
+set(_cmake_feature_test_cxx_contextual_conversions "${GNU49_CXX14}")
+set(_cmake_feature_test_cxx_attribute_deprecated "${GNU49_CXX14}")
+set(_cmake_feature_test_cxx_decltype_auto "${GNU49_CXX14}")
+set(_cmake_feature_test_cxx_digit_separators "${GNU49_CXX14}")
+set(_cmake_feature_test_cxx_generic_lambdas "${GNU49_CXX14}")
+set(_cmake_feature_test_cxx_lambda_init_captures "${GNU49_CXX14}")
+# GNU 4.3 supports binary literals as an extension, but may warn about
+# use of extensions prior to GNU 4.9
+# http://stackoverflow.com/questions/16334024/difference-between-gcc-binary-literals-and-c14-ones
+set(_cmake_feature_test_cxx_binary_literals "${GNU49_CXX14}")
+# The feature below is documented as available in GNU 4.8 (by implementing an
+# earlier draft of the standard paper), but that version of the compiler
+# does not set __cplusplus to a value greater than 201103L until GNU 4.9:
+# http://gcc.gnu.org/onlinedocs/gcc-4.8.2/cpp/Standard-Predefined-Macros.html#Standard-Predefined-Macros
+# http://gcc.gnu.org/onlinedocs/gcc-4.9.0/cpp/Standard-Predefined-Macros.html#Standard-Predefined-Macros
+# So, CMake only reports availability for it with GNU 4.9 or later.
+set(_cmake_feature_test_cxx_return_type_deduction "${GNU49_CXX14}")
+
# Introduced in GCC 4.8.1
set(GNU481_CXX11 "((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= 40801) && __cplusplus >= 201103L")
set(_cmake_feature_test_cxx_decltype_incomplete_return_types "${GNU481_CXX11}")