wip-on-1000-10-8-for-LLVM-7.1.1

Version 2.0.3

• This adds support for the 'zippered' platform type. It is sufficient to consume the SDKs for Darwin18/MacOS10.14 and Darwin19/MacOS10.15.

• The library version now reflects the TAPI edition, rather than the LLVM version it was built on top of.

wip-on-1000-10-8-for-llvm-7-1

This is based off the Xcode 10 tapi sources (1000.10.8) but to build on top of LLVM 7.1, rather than llvm-swift.

tapi-201-for-llvm-7-1-with-emuTLS

This is a branch for building toolchains based on GCC when the emulatedTLS has been split into a CRT (e.g. https://github.com/iains/gcc-8-branch.git)

This branch has been tested with LLVM 7.1 with some additions to support older Darwin versions (https://github.com/iains/LLVM-7-branch.git).

It builds automatically (using the branch mentioned) when this repo is cloned to the same level as the LLVM monorepo clone.

Building outside this context hasn't been tried.

on-700rc2

So I tried this on top of the 7.0.0rc2 sources with the changes here.

plus:

a) Add the ObjcMetadata library from Apple clang-800.0.42.1 b) symlink tapi into clang/tools/tapi c) add to clang/tools/CMakeLists.txt

add_llvm_external_project(tapi tapi)

currently, 13 tests fail (and the inputs for IVarTest and Simple have to be commented out to get the build to run).

TAPI

TAPI is a Text-based Application Programming Interface. It replaces the Mach-O Dynamic Library Stub files in Apple's SDKs to reduce the SDK size even further.

The text-based dynamic library stub file format (.tbd) is a human readable and editable YAML text file. The TAPI projects uses the LLVM YAML parser to read those files and provides this functionality to the linker as a dynamic library.

Building TAPI

• Create a source directory <src_dir>.

• Clone the LLVM source code for the swift-4.2-branch from GitHub Apple/swift-llvm into the <src_dir>/llvm directory.

  git clone git@github.com:apple/swift-llvm.git llvm -b swift-4.2-branch

• Clone the CLANG source code for the swift-4.2-branch from GitHub Apple/swift-clang into the <src_dir>/clang directory.

  git clone git@github.com:apple/swift-clang.git clang -b swift-4.2-branch

• Place the content of this tar archive into the <src_dir>/tapi directory.

• Create a separate build directory and configure the project with CMake:

  cmake -G Ninja -C <src_dir>/tapi/cmake/caches/apple-tapi.cmake
        -DCMAKE_INSTALL_PREFIX=<install_dir> <src_dir>/llvm
  

• The CMake cache file defines most of the settings for you, such as enabling LTO. It also specifies the distribution components to include all the targets needed for TAPI.

• To build and install the TAPI project invoke:

  ninja install-distribution
  

  in the build directory.