From 63bf207cd67972785fba5d48533022e0945f0bd7 Mon Sep 17 00:00:00 2001 From: Robert Maynard Date: Fri, 14 Jun 2019 16:50:52 -0400 Subject: [PATCH] CompileFeatures: document why lambda_init_captures requires GCC 4.9 --- Modules/Compiler/GNU-CXX-FeatureTests.cmake | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Modules/Compiler/GNU-CXX-FeatureTests.cmake b/Modules/Compiler/GNU-CXX-FeatureTests.cmake index d18adaff0e..45c54708e6 100644 --- a/Modules/Compiler/GNU-CXX-FeatureTests.cmake +++ b/Modules/Compiler/GNU-CXX-FeatureTests.cmake @@ -18,18 +18,18 @@ 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 +# The features below are 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 "${GNU49_CXX14}") +set(_cmake_feature_test_cxx_lambda_init_captures "${GNU49_CXX14}") # Introduced in GCC 4.8.1 set(GNU481_CXX11 "((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= 40801) && __cplusplus >= 201103L")