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Add Apache 2.0 license for Swift CMake modules (#1150)
* Add Apache 2.0 license for Swift CMake modules The Swift CMake modules (AddSwift.cmake and InitializeSwift.cmake) in cpp/external/macos/cmake/modules are from the Swift open source project and are licensed under Apache License v2.0 with Runtime Library Exception. This commit: - Adds the full Apache 2.0 license with Runtime Library Exception to cpp/external/macos/LICENSE - Updates the main LICENSE file to reference the macos directory containing these Swift CMake modules * Update LICENSE to reference tclap-1.2.5 The tclap library was upgraded from 1.2.2 to 1.2.5 in commit b205750, but the LICENSE file was not updated to reflect this change. * Fix incorrect source repository URL in Swift CMake modules LICENSE The CMake modules are from apple/swift-cmake-examples, not apple/swift. The file headers reference swift.org/LICENSE.txt which includes the Runtime Library Exception. --------- Co-authored-by: Claude <noreply@anthropic.com>
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LICENSE

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The code in this repository currently relies on several other libraries, parts of libraries,
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or external files: clblast, filesystem-1.5.8, half-2.1.0, httplib, mozilla-cacerts,
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nlohmann_json, sgfmill, and tclap-1.2.2. For the licenses for those libraries and/or files, see the
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individual readmes and/or license files for each one within their respective subdirectories within
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cpp/external. Additionally, cpp/core/sha2.cpp derives from another piece of external code
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and embeds its own license within that file.
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or external files: clblast, filesystem-1.5.8, half-2.1.0, httplib, macos (Swift CMake modules),
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mozilla-cacerts, nlohmann_json, sgfmill, and tclap-1.2.5. For the licenses for those libraries
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and/or files, see the individual readmes and/or license files for each one within their respective
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subdirectories within cpp/external. Additionally, cpp/core/sha2.cpp derives from another piece of
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external code and embeds its own license within that file.
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Aside from the above, the license for all OTHER content in this repo is as follows:
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cpp/external/macos/LICENSE

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The CMake modules in the cmake/modules subdirectory are from the swift-cmake-examples project
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(https://github.com/apple/swift-cmake-examples) and are licensed under Apache License v2.0
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with Runtime Library Exception (as stated in the file headers which reference
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https://swift.org/LICENSE.txt). See below for the full license text.
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==============================================================================
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