#!/bin/sh

MAKEDEPS="make ninja cmake libedit libffi libxml2 ncurses python-setuptools python-sphinx"
DEPS="perl zlib libffi libedit ncurses"

PKG_VER=13.0.0
SOURCE=https://github.com/llvm/llvm-project/releases/download/llvmorg-$PKG_VER/llvm-$PKG_VER.src.tar.xz
DESC="Collection of modular and reusable compiler and toolchain technologies"

package () {
    grep -rl '#!.*python' | xargs sed -i '1s/python$/python3/'
}

build () {
    mkdir build
    cd build
    CC=gcc CXX=g++                                  \
    cmake                                           \
    		-DCMAKE_BUILD_TYPE=Release \
            -DCMAKE_INSTALL_PREFIX=/usr \
            -DLLVM_BINUTILS_INCDIR=/usr/include \
            -DLLVM_BUILD_DOCS=OFF \
            -DLLVM_BUILD_EXAMPLES=OFF \
            -DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON \
            -DLLVM_BUILD_LLVM_DYLIB=ON \
            -DLLVM_BUILD_TESTS=ON \
            -DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-linux-musl" \
            -DLLVM_ENABLE_ASSERTIONS=OFF \
            -DLLVM_ENABLE_FFI=ON \
            -DLLVM_ENABLE_LIBCXX=OFF \
            -DLLVM_ENABLE_PIC=ON \
            -DLLVM_ENABLE_RTTI=ON \
            -DLLVM_ENABLE_SPHINX=OFF \
            -DLLVM_ENABLE_TERMINFO=ON \
            -DLLVM_ENABLE_ZLIB=ON \
            -DLLVM_HOST_TRIPLE="x86_64-linux-musl" \
            -DLLVM_INCLUDE_EXAMPLES=OFF \
            -DLLVM_LINK_LLVM_DYLIB=ON \
            -DLLVM_APPEND_VC_REV=OFF \
          -Wno-dev -G Ninja ..                      &&
    ninja llvm-tblgen &&
    ninja &&
    cd ..

    python3 utils/lit/setup.py build
}

package () {
    DESTDIR=$PKG_DEST ninja -C build install

    cd build
	python3 ../utils/lit/setup.py install --prefix=/usr --root=$PKG_DEST

    mkdir $PKG_DEST/usr/bin
    for path in bin/*; do
        name=${path##*/}
        ln -s ../lib/llvm/bin/$name $PKG_DEST/usr/bin/$name
    done

}