https://github.com/plotfi/cxx-interop-test

Small test app for C++ Interop with Swift.
https://github.com/plotfi/cxx-interop-test

Last synced: 3 months ago
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Small test app for C++ Interop with Swift.

• Host: GitHub
• URL: https://github.com/plotfi/cxx-interop-test
• Owner: plotfi
• License: apache-2.0
• Created: 2021-03-07T07:44:23.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2023-11-05T05:23:26.000Z (about 1 year ago)
• Last Synced: 2024-07-05T13:46:20.451Z (4 months ago)
• Language: Swift
• Size: 60.5 KB
• Stars: 20
• Watchers: 6
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# cxx-interop test

Small test app for C++ Interop with Swift.

To build you need the latest top of tree Swift from github.com/apple/swift

## NOTE: SPM can be busted at times when things require the latest ToT Swift. CMake can be more reliable:

```

cmake -GNinja -B./build \

  -DCMAKE_Swift_COMPILER=/path/to/bin/swiftc \

  -DCMAKE_CXX_COMPILER=/path/to/bin/clang++ \

  -DSWIFT_CXX_TOOLCHAIN=/path/to/toolchain/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/ .

ninja -C./build

./build/cxx-interop-test

Output:

std::vector: [1, 2, 3]

Done.

```

To build Swift with swift PM use buildscript as follows:

```

/path/to/swift/checkouts/swift/utils/build-script \

  --skip-build-benchmarks --skip-ios --skip-watchos --skip-tvos \

  --swift-darwin-supported-archs "$(uname -m)" \

  --release-debuginfo --swift-disable-dead-stripping \

  --swiftpm --libcxx --llbuild  --install-all true

```

This will setup an xcode.app directory in your build dir. Modify your `PATH`,

`SDKROOT` and `CPATH` as follows:

```

# Set these manually as you see fit:

export SWIFT_BUILD_DIR=/path/to/swift/checkouts/build

export TOOLCHAIN_BUILD_DIR=$SWIFT_BUILD_DIR/Ninja-RelWithDebInfoAssert/toolchain-macosx-x86_64

export XCODE_DEV_ROOT=`xcode-select -p`

# These should be correct as is:

export XCTOOLCHAIN_SUBDIR=Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain

export XCTOOLCHAIN=$TOOLCHAIN_BUILD_DIR/$XCTOOLCHAIN_SUBDIR

export CPATH=$XCTOOLCHAIN/usr/include/c++/v1

export PATH=$XCTOOLCHAIN/usr/bin/:$PATH

export SDKROOT=$XCODE_DEV_ROOT/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk

```

Ths should give you a workable swift package manager to use to build this project.

To build run the following:

```

swift build

```

The runable end result should be in the .build directory.