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https://github.com/Kitware/CMake.git
synced 2026-01-03 12:19:41 -06:00
7c38e6bb52
Add a variable to indicate the latest standard known to be supported for
each language:
* `CMAKE_C_STANDARD_LATEST`
* `CMAKE_CXX_STANDARD_LATEST`
* `CMAKE_CUDA_STANDARD_LATEST`
* `CMAKE_HIP_STANDARD_LATEST`
* `CMAKE_OBJC_STANDARD_LATEST`
* `CMAKE_OBJCXX_STANDARD_LATEST`
These variables, more generally referred to as
`CMAKE_<LANG>_STANDARD_LATEST`, are assigned an integer value which
represents the minimum between the latest version of the associated
language standard supported by the current compiler and the latest
version supported by CMake.
Add documentation for these variables in a new page called
`CMAKE_<LANG>_STANDARD_LATEST` was added under the "Variables for
Languages" section of the `cmake-variables(7)` page.
Update each compiler-specific CMake script under
`${CMAKE_ROOT}\Modules\Compiler` to manually define the relevant
`CMAKE_<LANG>_STANDARD_LATEST` variable as necessary. This will
require updating and maintaining as newer compiler versions become
recognized by CMake.
Closes: #25717
117 lines
4.3 KiB
CMake
117 lines
4.3 KiB
CMake
include(Compiler/Intel)
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__compiler_intel(CXX)
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string(APPEND CMAKE_CXX_FLAGS_MINSIZEREL_INIT " -DNDEBUG")
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string(APPEND CMAKE_CXX_FLAGS_RELEASE_INIT " -DNDEBUG")
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string(APPEND CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT " -DNDEBUG")
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set(CMAKE_DEPFILE_FLAGS_CXX "-MD -MT <DEP_TARGET> -MF <DEP_FILE>")
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if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
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AND CMAKE_GENERATOR MATCHES "Makefiles|WMake")
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# dependencies are computed by the compiler itself
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set(CMAKE_CXX_DEPFILE_FORMAT gcc)
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set(CMAKE_CXX_DEPENDS_USE_COMPILER TRUE)
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endif()
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if("x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
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set(CMAKE_CXX_CLANG_TIDY_DRIVER_MODE "cl")
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set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl")
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.1)
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set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "")
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set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "")
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set(CMAKE_CXX98_STANDARD__HAS_FULL_SUPPORT ON)
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 13.0)
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set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-Qstd=c++11")
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set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-Qstd=c++11")
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else()
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set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-Qstd=c++0x")
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set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-Qstd=c++0x")
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endif()
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set(CMAKE_CXX_STANDARD_LATEST 11)
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endif()
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 16.0)
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set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-Qstd=c++14")
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set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-Qstd=c++14")
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set(CMAKE_CXX_STANDARD_LATEST 14)
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endif()
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0.0)
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set(CMAKE_CXX17_STANDARD_COMPILE_OPTION "-Qstd=c++17")
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set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-Qstd=c++17")
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set(CMAKE_CXX_STANDARD_LATEST 17)
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endif()
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0.0)
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set(CMAKE_CXX20_STANDARD_COMPILE_OPTION "-Qstd=c++20")
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set(CMAKE_CXX20_EXTENSION_COMPILE_OPTION "-Qstd=c++20")
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set(CMAKE_CXX_STANDARD_LATEST 20)
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endif()
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else()
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set(CMAKE_CXX_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -x c++)
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.1)
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set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "-std=c++98")
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set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "-std=gnu++98")
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set(CMAKE_CXX98_STANDARD__HAS_FULL_SUPPORT ON)
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 13.0)
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set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
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set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")
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else()
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set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++0x")
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set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++0x")
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endif()
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set(CMAKE_CXX_STANDARD_LATEST 11)
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endif()
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 15.0)
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set(CMAKE_CXX11_STANDARD__HAS_FULL_SUPPORT ON)
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endif()
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 15.0.2)
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set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std=c++14")
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set(CMAKE_CXX_STANDARD_LATEST 14)
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elseif (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 15.0.0)
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set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std=c++1y")
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set(CMAKE_CXX_STANDARD_LATEST 14)
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endif()
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# Intel 15.0.2 accepts c++14 instead of c++1y, but not gnu++14
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# instead of gnu++1y. Intel 17.0.0 accepts gnu++14 too.
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if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 17.0)
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set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++14")
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elseif (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 15.0.0)
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set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++1y")
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endif()
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if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 17.0)
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set(CMAKE_CXX14_STANDARD__HAS_FULL_SUPPORT ON)
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endif()
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0.0)
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set(CMAKE_CXX17_STANDARD_COMPILE_OPTION "-std=c++17")
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set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-std=gnu++17")
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set(CMAKE_CXX_STANDARD_LATEST 17)
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endif()
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if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0.0.20190206)
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set(CMAKE_CXX20_STANDARD_COMPILE_OPTION "-std=c++20")
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set(CMAKE_CXX20_EXTENSION_COMPILE_OPTION "-std=gnu++20")
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set(CMAKE_CXX_STANDARD_LATEST 20)
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endif()
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endif()
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__compiler_check_default_language_standard(CXX 12.1 98)
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set(CMAKE_CXX_CREATE_PREPROCESSED_SOURCE "<CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
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set(CMAKE_CXX_CREATE_ASSEMBLY_SOURCE "<CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
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