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86578eccf2
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copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong.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.
52 lines
1.8 KiB
CMake
52 lines
1.8 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#.rst:
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# CMakeBackwardCompatibilityCXX
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# -----------------------------
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#
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# define a bunch of backwards compatibility variables
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#
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# ::
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#
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# CMAKE_ANSI_CXXFLAGS - flag for ansi c++
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# CMAKE_HAS_ANSI_STRING_STREAM - has <strstream>
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# include(TestForANSIStreamHeaders)
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# include(CheckIncludeFileCXX)
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# include(TestForSTDNamespace)
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# include(TestForANSIForScope)
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if(NOT CMAKE_SKIP_COMPATIBILITY_TESTS)
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# check for some ANSI flags in the CXX compiler if it is not gnu
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if(NOT CMAKE_COMPILER_IS_GNUCXX)
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include(TestCXXAcceptsFlag)
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set(CMAKE_TRY_ANSI_CXX_FLAGS "")
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if(CMAKE_SYSTEM_NAME MATCHES "IRIX")
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set(CMAKE_TRY_ANSI_CXX_FLAGS "-LANG:std")
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endif()
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if(CMAKE_SYSTEM_NAME MATCHES "OSF")
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set(CMAKE_TRY_ANSI_CXX_FLAGS "-std strict_ansi -nopure_cname")
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endif()
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# if CMAKE_TRY_ANSI_CXX_FLAGS has something in it, see
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# if the compiler accepts it
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if(NOT CMAKE_TRY_ANSI_CXX_FLAGS STREQUAL "")
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CHECK_CXX_ACCEPTS_FLAG(${CMAKE_TRY_ANSI_CXX_FLAGS} CMAKE_CXX_ACCEPTS_FLAGS)
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# if the compiler liked the flag then set CMAKE_ANSI_CXXFLAGS
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# to the flag
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if(CMAKE_CXX_ACCEPTS_FLAGS)
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set(CMAKE_ANSI_CXXFLAGS ${CMAKE_TRY_ANSI_CXX_FLAGS} CACHE INTERNAL
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"What flags are required by the c++ compiler to make it ansi." )
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endif()
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endif()
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endif()
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set(CMAKE_CXX_FLAGS_SAVE ${CMAKE_CXX_FLAGS})
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string(APPEND CMAKE_CXX_FLAGS " ${CMAKE_ANSI_CXXFLAGS}")
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include(TestForANSIStreamHeaders)
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include(CheckIncludeFileCXX)
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include(TestForSTDNamespace)
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include(TestForANSIForScope)
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include(TestForSSTREAM)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS_SAVE}")
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endif()
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