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Simplify CMake per-source license notices Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
2016-09-27 22:01:08 +03:00
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
project: Add infrastructure for recording CXX compiler features Add a feature test using the compiler macros and the preprocessor to determine available features. Add a CMAKE_CXX_COMPILE_FEATURES variable which contains all features known to the loaded compiler, and a CMAKE_CXX_KNOWN_FEATURES variable containing all features known to CMake. Add language standard specific variables for internal use to determine the standard-specific compile flags to use. This will be extended to other languages in the future. Follow-up commits will add features which will be recorded by the feature test.
2013-10-17 13:47:29 +04:00
function(cmake_determine_compile_features lang)
Features: Extend concept to C language. Add properties and variables corresponding to CXX equivalents. Add features for c_function_prototypes (C90), c_restrict (C99), c_variadic_macros (C99) and c_static_assert (C11). This feature set can be extended later. Add a <PREFIX>_RESTRICT symbol define to WriteCompilerDetectionHeader to conditionally represent the c_restrict feature.
2013-11-04 04:15:43 +04:00
if(lang STREQUAL C AND COMMAND cmake_record_c_compile_features)
message(STATUS "Detecting ${lang} compile features")
set(CMAKE_C90_COMPILE_FEATURES)
set(CMAKE_C99_COMPILE_FEATURES)
set(CMAKE_C11_COMPILE_FEATURES)
include("${CMAKE_ROOT}/Modules/Internal/FeatureTesting.cmake")
cmake_record_c_compile_features()
if(NOT _result EQUAL 0)
message(STATUS "Detecting ${lang} compile features - failed")
return()
endif()
if (CMAKE_C99_COMPILE_FEATURES AND CMAKE_C11_COMPILE_FEATURES)
list(REMOVE_ITEM CMAKE_C11_COMPILE_FEATURES ${CMAKE_C99_COMPILE_FEATURES})
endif()
if (CMAKE_C90_COMPILE_FEATURES AND CMAKE_C99_COMPILE_FEATURES)
list(REMOVE_ITEM CMAKE_C99_COMPILE_FEATURES ${CMAKE_C90_COMPILE_FEATURES})
endif()
if(NOT CMAKE_C_COMPILE_FEATURES)
set(CMAKE_C_COMPILE_FEATURES
${CMAKE_C90_COMPILE_FEATURES}
${CMAKE_C99_COMPILE_FEATURES}
${CMAKE_C11_COMPILE_FEATURES}
)
endif()
set(CMAKE_C_COMPILE_FEATURES ${CMAKE_C_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_C90_COMPILE_FEATURES ${CMAKE_C90_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_C99_COMPILE_FEATURES ${CMAKE_C99_COMPILE_FEATURES} PARENT_SCOPE)
set(CMAKE_C11_COMPILE_FEATURES ${CMAKE_C11_COMPILE_FEATURES} PARENT_SCOPE)
message(STATUS "Detecting ${lang} compile features - done")
elseif(lang STREQUAL CXX AND COMMAND cmake_record_cxx_compile_features)
project: Add infrastructure for recording CXX compiler features Add a feature test using the compiler macros and the preprocessor to determine available features. Add a CMAKE_CXX_COMPILE_FEATURES variable which contains all features known to the loaded compiler, and a CMAKE_CXX_KNOWN_FEATURES variable containing all features known to CMake. Add language standard specific variables for internal use to determine the standard-specific compile flags to use. This will be extended to other languages in the future. Follow-up commits will add features which will be recorded by the feature test.
2013-10-17 13:47:29 +04:00
message(STATUS "Detecting ${lang} compile features")
Features: Add cxx_template_template_parameters. Extend the existing feature infrastructure as needed to support both C++11 and C++98 features.
2014-04-06 13:40:11 +04:00
set(CMAKE_CXX98_COMPILE_FEATURES)
project: Add infrastructure for recording CXX compiler features Add a feature test using the compiler macros and the preprocessor to determine available features. Add a CMAKE_CXX_COMPILE_FEATURES variable which contains all features known to the loaded compiler, and a CMAKE_CXX_KNOWN_FEATURES variable containing all features known to CMake. Add language standard specific variables for internal use to determine the standard-specific compile flags to use. This will be extended to other languages in the future. Follow-up commits will add features which will be recorded by the feature test.
2013-10-17 13:47:29 +04:00
set(CMAKE_CXX11_COMPILE_FEATURES)
Features: Add support for C++14 features. Record the features implemented by GNU 4.9 and Clang 3.4.
2014-05-06 02:21:14 +04:00
set(CMAKE_CXX14_COMPILE_FEATURES)
project: Add infrastructure for recording CXX compiler features Add a feature test using the compiler macros and the preprocessor to determine available features. Add a CMAKE_CXX_COMPILE_FEATURES variable which contains all features known to the loaded compiler, and a CMAKE_CXX_KNOWN_FEATURES variable containing all features known to CMake. Add language standard specific variables for internal use to determine the standard-specific compile flags to use. This will be extended to other languages in the future. Follow-up commits will add features which will be recorded by the feature test.
2013-10-17 13:47:29 +04:00
include("${CMAKE_ROOT}/Modules/Internal/FeatureTesting.cmake")
cmake_record_cxx_compile_features()
if(NOT _result EQUAL 0)
message(STATUS "Detecting ${lang} compile features - failed")
return()
endif()
Features: Add support for C++14 features. Record the features implemented by GNU 4.9 and Clang 3.4.
2014-05-06 02:21:14 +04:00
if (CMAKE_CXX11_COMPILE_FEATURES AND CMAKE_CXX14_COMPILE_FEATURES)
list(REMOVE_ITEM CMAKE_CXX14_COMPILE_FEATURES ${CMAKE_CXX11_COMPILE_FEATURES})
endif()
if (CMAKE_CXX98_COMPILE_FEATURES AND CMAKE_CXX11_COMPILE_FEATURES)
Features: Add cxx_template_template_parameters. Extend the existing feature infrastructure as needed to support both C++11 and C++98 features.
2014-04-06 13:40:11 +04:00
list(REMOVE_ITEM CMAKE_CXX11_COMPILE_FEATURES ${CMAKE_CXX98_COMPILE_FEATURES})
endif()
project: Add infrastructure for recording CXX compiler features Add a feature test using the compiler macros and the preprocessor to determine available features. Add a CMAKE_CXX_COMPILE_FEATURES variable which contains all features known to the loaded compiler, and a CMAKE_CXX_KNOWN_FEATURES variable containing all features known to CMake. Add language standard specific variables for internal use to determine the standard-specific compile flags to use. This will be extended to other languages in the future. Follow-up commits will add features which will be recorded by the feature test.
2013-10-17 13:47:29 +04:00
if(NOT CMAKE_CXX_COMPILE_FEATURES)
set(CMAKE_CXX_COMPILE_FEATURES
Features: Add cxx_template_template_parameters. Extend the existing feature infrastructure as needed to support both C++11 and C++98 features.
2014-04-06 13:40:11 +04:00
${CMAKE_CXX98_COMPILE_FEATURES}
project: Add infrastructure for recording CXX compiler features Add a feature test using the compiler macros and the preprocessor to determine available features. Add a CMAKE_CXX_COMPILE_FEATURES variable which contains all features known to the loaded compiler, and a CMAKE_CXX_KNOWN_FEATURES variable containing all features known to CMake. Add language standard specific variables for internal use to determine the standard-specific compile flags to use. This will be extended to other languages in the future. Follow-up commits will add features which will be recorded by the feature test.
2013-10-17 13:47:29 +04:00
${CMAKE_CXX11_COMPILE_FEATURES}
Features: Add support for C++14 features. Record the features implemented by GNU 4.9 and Clang 3.4.
2014-05-06 02:21:14 +04:00
${CMAKE_CXX14_COMPILE_FEATURES}
project: Add infrastructure for recording CXX compiler features Add a feature test using the compiler macros and the preprocessor to determine available features. Add a CMAKE_CXX_COMPILE_FEATURES variable which contains all features known to the loaded compiler, and a CMAKE_CXX_KNOWN_FEATURES variable containing all features known to CMake. Add language standard specific variables for internal use to determine the standard-specific compile flags to use. This will be extended to other languages in the future. Follow-up commits will add features which will be recorded by the feature test.
2013-10-17 13:47:29 +04:00
)
endif()
set(CMAKE_CXX_COMPILE_FEATURES ${CMAKE_CXX_COMPILE_FEATURES} PARENT_SCOPE)
Features: Add cxx_template_template_parameters. Extend the existing feature infrastructure as needed to support both C++11 and C++98 features.
2014-04-06 13:40:11 +04:00
set(CMAKE_CXX98_COMPILE_FEATURES ${CMAKE_CXX98_COMPILE_FEATURES} PARENT_SCOPE)
project: Add infrastructure for recording CXX compiler features Add a feature test using the compiler macros and the preprocessor to determine available features. Add a CMAKE_CXX_COMPILE_FEATURES variable which contains all features known to the loaded compiler, and a CMAKE_CXX_KNOWN_FEATURES variable containing all features known to CMake. Add language standard specific variables for internal use to determine the standard-specific compile flags to use. This will be extended to other languages in the future. Follow-up commits will add features which will be recorded by the feature test.
2013-10-17 13:47:29 +04:00
set(CMAKE_CXX11_COMPILE_FEATURES ${CMAKE_CXX11_COMPILE_FEATURES} PARENT_SCOPE)
Features: Add support for C++14 features. Record the features implemented by GNU 4.9 and Clang 3.4.
2014-05-06 02:21:14 +04:00
set(CMAKE_CXX14_COMPILE_FEATURES ${CMAKE_CXX14_COMPILE_FEATURES} PARENT_SCOPE)
project: Add infrastructure for recording CXX compiler features Add a feature test using the compiler macros and the preprocessor to determine available features. Add a CMAKE_CXX_COMPILE_FEATURES variable which contains all features known to the loaded compiler, and a CMAKE_CXX_KNOWN_FEATURES variable containing all features known to CMake. Add language standard specific variables for internal use to determine the standard-specific compile flags to use. This will be extended to other languages in the future. Follow-up commits will add features which will be recorded by the feature test.
2013-10-17 13:47:29 +04:00
message(STATUS "Detecting ${lang} compile features - done")
endif()
endfunction()