# Description: LLVM compiler backend
# URL: https://llvm.org/
# Maintainer: CRUX System Team, core-ports at crux dot nu
# Depends on: libxml2 ninja python3-setuptools
# Optional: lld

name=llvm
version=22.1.8
release=1
source=(https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/llvm-project-$version.src.tar.xz
    install-prefix.patch
    llvm-config.h)

build() {
    prt-get isinst ccache && export PATH="$(echo ${PATH} | awk -v RS=: -v ORS=: '/ccache/ {next} {print}' | sed 's/:*$//')"

    grep -rl '#!.*python' | xargs sed -i '1s/python$/python3/'

    patch -Np2 -d $name-project-$version.src/llvm -i $SRC/install-prefix.patch

    cmake -S $name-project-$version.src/llvm -B build -G Ninja $PKGMK_LLVM \
        -D CMAKE_INSTALL_PREFIX=/usr \
        -D CMAKE_BUILD_TYPE=Release \
        -D CMAKE_C_FLAGS_RELEASE="$CFLAGS" \
        -D CMAKE_CXX_FLAGS_RELEASE="$CXXFLAGS" \
        -D LLVM_BINUTILS_INCDIR=/usr/include \
        -D LLVM_BUILD_LLVM_DYLIB=ON \
        -D LLVM_LINK_LLVM_DYLIB=ON \
        -D FFI_INCLUDE_DIR=/usr/include \
        -D LLVM_BUILD_RUNTIME=ON \
        -D LLVM_BUILD_EXTERNAL_COMPILER_RT=ON \
        -D LLVM_ENABLE_FFI=ON \
        -D LLVM_ENABLE_RTTI=ON \
        -D LLVM_INCLUDE_UTILS=ON \
        -D LLVM_INSTALL_UTILS=ON \
        -D LLVM_ENABLE_PIC=ON \
        -D LLVM_ENABLE_ZLIB=ON \
        -D LLVM_ENABLE_ZSTD=ON \
        -D LLVM_OPTIMIZED_TABLEGEN=ON \
        -D LLVM_BUILD_TOOLS=ON \
        -D LLVM_UTILS_INSTALL_DIR=/usr/bin \
        -D LLVM_INCLUDE_EXAMPLES=OFF \
        -D LLVM_INCLUDE_TESTS=OFF \
        -D LLVM_ENABLE_OCAMLDOC=OFF \
        -D LLVM_ENABLE_LIBCXX=OFF \
        -D LLVM_ENABLE_LLD="$(prt-get isinst lld >/dev/null && echo ON || echo OFF)" \
        -D LLVM_INCLUDE_BENCHMARKS=OFF \
        -D LLVM_APPEND_VC_REV=OFF \
        -Wno-dev

    NINJA_STATUS="[1/2][%f/%t %es] " \
    cmake --build build --target LLVM -j ${JOBS:-1}
    NINJA_STATUS="[2/2][%f/%t %es] " \
    cmake --build build -j ${JOBS:-1}
    DESTDIR=$PKG cmake --install build

    # multilib stub
    mv $PKG/usr/include/llvm/Config/llvm-config{,-64}.h
    install -m 0644 $SRC/llvm-config.h $PKG/usr/include/llvm/Config/

    install -d $PKG/usr/lib/bfd-plugins
    ln -s ../LLVMgold.so $PKG/usr/lib/bfd-plugins/
    ln -s ../libLTO.so $PKG/usr/lib/bfd-plugins/

    /usr/bin/python3 $name-project-$version.src/llvm/utils/lit/setup.py build
    /usr/bin/python3 $name-project-$version.src/llvm/utils/lit/setup.py install --prefix=/usr --root=$PKG
    /usr/bin/python3 -m compileall -d $name-project-$version.src/llvm/utils/lit $PKG
    /usr/bin/python3 -O -m compileall -d $name-project-$version.src/llvm/utils/lit $PKG
    /usr/bin/python3 -OO -m compileall -d $name-project-$version.src/llvm/utils/lit $PKG
}