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Fancy Onyx Compiler

An Onyx programming language compiler implementation.

About

The Fancy Onyx Compiler (FNXC) is an Onyx programming language compiler implementation built in C++ on top of LLVM.

Target ISAs supported by FNXC are i386, amd64, arm7 and arm8.

The fnxc binary implements the Onyx Compiler Interface standard (the build and doc commands), and does not peform neither linking nor dependency management. For a fully-featured building environment, see Fancy Onyx, which may use FNXC as a dependency.

Additional features of FNXC include running a program in JIT mode, REPL and Onyx Language Server Protocol implementations, and formatting.

Usage

$ fnxc -h
Fancy Onyx Compiler, v0

Usage:
  $ fnxc, fnxc repl               Run the REPL
  $ fnxc <file>, fnxc run <file>  Run a file in JIT mode
  $ fnxc build <file>             Build a file in AOT mode
  $ fnxc doc <file>               Build documentation
  $ fnxc serve                    Run the LSP server
  $ fnxc format <file>            Run the formatter

Options:
  -[-h]elp    Display help on topic
  -[-v]ersion Display FNXC version

Development

  1. Clone the FNXC repository.

    $ git clone https://github.com/fancysofthq/fnxc
  2. Put the SQLite3 extensions source code under lib/cpp/sqlite3/ext, using either variant, so the noop() extension source code resides at lib/cpp/sqlite3/ext/misc/noop.c.

    1. Use Fossil SCM.

      $ mkdir lib/cpp/sqlite3
      $ cd lib/cpp/sqlite3
      $ fossil clone https://www.sqlite.org/src sqlite.fossil
      $ fossil open sqlite.fossil
    2. Download a snapshot of the complete (raw) source tree from https://sqlite.org/download.html (e.g. sqlite-src-3330000.zip), and extract the ext folder to lib/cpp/sqlite3/ext.

    3. TODO: Enable extensions in the VCPG sqlite3 dependency.

  3. Install LLVM ~> 10 with exception handling enabled. Make sure the LLVMConfig.cmake file can be found at ${LLVM_DIR} (a variable later passed to CMake).

    When building LLVM from source, set the following CMake variables:

    -DLLVM_ENABLE_EH=ON
    -DLLVM_ENABLE_RTTI=ON
    -DLLVM_TARGETS_TO_BUILD=X86;ARM
    

    For example, on a Windows x64 machine:

    $ cmake \
      -Thost=x64 \
      -DCMAKE_C_COMPILER="C:/msys64/mingw64/bin/clang-cl.exe" \
      -DCMAKE_CXX_COMPILER="C:/msys64/mingw64/bin/clang-cl.exe" \
      -DCMAKE_LINKER="C:/msys64/mingw64/bin/lld-link.exe" \
      -DCMAKE_RANLIB="C:/msys64/mingw64/bin/llvm-ranlib.exe" \
      -DCMAKE_AR="C:/msys64/mingw64/bin/llvm-ar.exe" \
      -DLLVM_ENABLE_WARNINGS=OFF \
      -DLLVM_ENABLE_LTO=THIN \
      -DLLVM_ENABLE_EH=ON \
      -DLLVM_ENABLE_RTTI=ON \
      -DLLVM_TARGETS_TO_BUILD="X86;ARM"

    NOTE: For LTO usage with CLang, see https://clang.llvm.org/docs/ThinLTO.html#clang-bootstrap.

    NOTE: The manual LLVM installation shall be replaced with VCPKG dependency. Right now it:

    1. Does not support exception handling.

    2. Does not allow to use compiler other than MSVC, which fails with some inconsistent behavior between llvm:: and std:: implementation of is_trivially_copyable error on my machine.

  4. Install VCPKG. Make sure you have vcpkg.exe in your PATH environment variable.

  5. Configure the compiler using a recent CMake version. This will automatically install VCPKG dependencies.

    # Note: change VCPKG_PATH and LLVM_DIR to reflect your environment
    $ cmake \
      -DCMAKE_TOOLCHAIN_FILE=${VCPKG_PATH}/scripts/buildsystems/vcpkg.cmake \
      -DLLVM_DIR=${LLVM_DIR}
  6. Build the compiler.

    $ cmake --build . -t fnxc
    $ ./fnxc -v

    Pro tip: On Windows 10, temporaly disable Microsoft Defender Antivirual real-time protection to speed up the build.

  7. (Optional) Run C++ tests during development

    $ cmake --build . -t tests
    $ ctest
  8. (Optional) Run Onyx tests once the compiler is compiled

    $ ./fnxc ../test/nx/all.nx

NOTE: Do not clutter .gitignore with files local to your workflow! Use the $GIT_DIR/info/exclude file instead, as per Git documentation.

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An Onyx compiler implementation

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