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CompileFeatures: Record when compilers gained full CXX11 support

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Use the infrastructure added by commit 646fb1a646 (CompileFeatures:
memoize C++ compilers with full language level support, 2019-03-27) to
avoid using a `try_compile` to check for C++11 feature support when the
running compiler is known to have all features.
This commit is contained in:
Robert Maynard
2019-04-16 14:11:20 -04:00
parent 7f83e8033b
commit 8d45a2ffe0
5 changed files with 17 additions and 17 deletions
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5
Modules/Compiler/AppleClang-CXX.cmake
View File

@@ -28,4 +28,9 @@ if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.1)
set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-std=gnu++1z")
endif()
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0)
set(CMAKE_CXX11_STANDARD__HAS_FULL_SUPPORT ON)
endif()
__compiler_check_default_language_standard(CXX 4.0 98)

3
Modules/Compiler/Clang-CXX.cmake
View File

@@ -17,9 +17,10 @@ if(NOT "x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
endif()
if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.1)
set(CMAKE_CXX98_STANDARD__HAS_FULL_SUPPORT ON)
set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")
set(CMAKE_CXX98_STANDARD__HAS_FULL_SUPPORT ON)
set(CMAKE_CXX11_STANDARD__HAS_FULL_SUPPORT ON)
elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 2.1)
set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++0x")
set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++0x")

6
Modules/Compiler/GNU-CXX.cmake
View File

@@ -17,15 +17,19 @@ if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.4)
endif()
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.7)
set(CMAKE_CXX98_STANDARD__HAS_FULL_SUPPORT ON)
set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")
set(CMAKE_CXX98_STANDARD__HAS_FULL_SUPPORT ON)
elseif (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.4)
# 4.3 supports 0x variants
set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++0x")
set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++0x")
endif()
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.8.1)
set(CMAKE_CXX11_STANDARD__HAS_FULL_SUPPORT ON)
endif()
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.9)
set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std=c++14")
set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++14")

4
Modules/Compiler/Intel-CXX.cmake
View File

@@ -54,6 +54,10 @@ else()
set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++1y")
endif()
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 15.0)
set(CMAKE_CXX11_STANDARD__HAS_FULL_SUPPORT ON)
endif()
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 13.0)
set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")

16
Modules/Compiler/MSVC-CXX.cmake
View File

@@ -17,6 +17,7 @@ if ((CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.0.24215.1 AND
set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std:c++14")
set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std:c++14")
if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.11.25505)
set(CMAKE_CXX11_STANDARD__HAS_FULL_SUPPORT ON)
set(CMAKE_CXX17_STANDARD_COMPILE_OPTION "-std:c++17")
set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-std:c++17")
else()
@@ -30,21 +31,6 @@ if ((CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.0.24215.1 AND
__compiler_check_default_language_standard(CXX 19.0 14)
# All features that we define are available in the base mode, except
# for meta-features for C++14 and above. Override the default macro
# to avoid doing unnecessary work.
macro(cmake_record_cxx_compile_features)
if (DEFINED CMAKE_CXX20_STANDARD_COMPILE_OPTION)
list(APPEND CMAKE_CXX20_COMPILE_FEATURES cxx_std_20)
endif()
# The main cmake_record_cxx_compile_features macro makes all
# these conditional on CMAKE_CXX##_STANDARD_COMPILE_OPTION,
# but we can skip the conditions because we set them above.
list(APPEND CMAKE_CXX17_COMPILE_FEATURES cxx_std_17)
list(APPEND CMAKE_CXX14_COMPILE_FEATURES cxx_std_14)
list(APPEND CMAKE_CXX98_COMPILE_FEATURES cxx_std_11) # no flag needed for 11
_record_compiler_features_cxx(98)
endmacro()
elseif (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 16.0)
# MSVC has no specific options to set language standards, but set them as
# empty strings anyways so the feature test infrastructure can at least check