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Features: Populate CMAKE_<LANG>_STANDARD_DEFAULT only for supported compilers. 

If no compiler feature information is known for a given compiler
version, do not set a language standard default either.  The two
settings must be recorded consistently.
This commit is contained in:
Stephen Kelly 2015-02-04 22:04:18 +01:00 committed by Brad King
parent 72537e4436
commit 9d767810e1
7 changed files with 21 additions and 8 deletions
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4
Modules/Compiler/AppleClang-C.cmake
View File

@ -12,7 +12,9 @@ if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.0)
set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11")
endif()
set(CMAKE_C_STANDARD_DEFAULT 99)
if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.0)
set(CMAKE_C_STANDARD_DEFAULT 99)
endif()
macro(cmake_record_c_compile_features)
macro(_get_appleclang_features std_version list)

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

@ -19,7 +19,9 @@ if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.1)
set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++1y")
endif()
set(CMAKE_CXX_STANDARD_DEFAULT 98)
if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.0)
set(CMAKE_CXX_STANDARD_DEFAULT 98)
endif()
macro(cmake_record_cxx_compile_features)
macro(_get_appleclang_features std_version list)

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

@ -31,7 +31,9 @@ elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.4)
set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++1y")
endif()
set(CMAKE_CXX_STANDARD_DEFAULT 98)
if(UNIX AND NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.4)
set(CMAKE_CXX_STANDARD_DEFAULT 98)
endif()
macro(cmake_record_cxx_compile_features)
macro(_get_clang_features std_version list)

2
Modules/Compiler/GNU-C.cmake
View File

@ -24,7 +24,7 @@ endif()
if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0)
set(CMAKE_C_STANDARD_DEFAULT 11)
else()
elseif(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4)
set(CMAKE_C_STANDARD_DEFAULT 90)
endif()

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

@ -34,7 +34,9 @@ elseif (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.8)
set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++1y")
endif()
set(CMAKE_CXX_STANDARD_DEFAULT 98)
if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.4)
set(CMAKE_CXX_STANDARD_DEFAULT 98)
endif()
macro(cmake_record_cxx_compile_features)
macro(_get_gcc_features std_version list)

7
Modules/Compiler/MSVC-CXX.cmake
View File

@ -1,5 +1,8 @@
# MSVC has no specific language level or flags to change it.
set(CMAKE_CXX_STANDARD_DEFAULT "")
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 16.0)
# MSVC has no specific language level or flags to change it.
set(CMAKE_CXX_STANDARD_DEFAULT "")
endif()
macro(cmake_record_cxx_compile_features)
record_compiler_features(CXX "" CMAKE_CXX_COMPILE_FEATURES)

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

@ -37,7 +37,9 @@ if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=c++11")
endif()
set(CMAKE_CXX_STANDARD_DEFAULT 98)
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
set(CMAKE_CXX_STANDARD_DEFAULT 98)
endif()
macro(cmake_record_cxx_compile_features)
macro(_get_solaris_studio_features std_version list)