pkgname=lld
pkgver=19.1.6
pkgrel=1
pkgdesc="Linker from the LLVM project"
arch=('x86_64')
url="https://lld.llvm.org/"
license=('Apache-2.0 WITH LLVM-exception')
depends=('llvm-libs' 'gcc-libs' 'zlib' 'zstd')
makedepends=('llvm' 'cmake' 'ninja' 'python-sphinx')
source=(https://github.com/llvm/llvm-project/releases/download/llvmorg-${pkgver}/${pkgname}-${pkgver}.src.tar.xz
    https://github.com/llvm/llvm-project/releases/download/llvmorg-${pkgver}/llvm-${pkgver}.src.tar.xz
    https://github.com/llvm/llvm-project/releases/download/llvmorg-${pkgver}/libunwind-${pkgver}.src.tar.xz
    https://github.com/llvm/llvm-project/releases/download/llvmorg-${pkgver}/cmake-${pkgver}.src.tar.xz)
sha256sums=(44fa50556cefbe3796e8256536267ee2f34ced5f3c1492473bccd75449cadbe6
    ad1a3b125ff014ded290094088de40efb9193ce81a24278184230b7d401f8a3e
    34eab971069837be770e44f3543f1eb50f385575e8f29d1b5e1a67e7c482f680
    9c7ec82d9a240dc2287b8de89d6881bb64ceea0dcd6ce133c34ef65bda22d99e)

prepare() {
    # https://bugs.llvm.org/show_bug.cgi?id=49228
    mv libunwind{-${pkgver}.src,}

    mv cmake{-${pkgver}.src,}
}

build() {
    cd ${pkgname}-${pkgver}.src

    local cmake_args=(
        -B flarebird-build
        -G Ninja
        -D CMAKE_BUILD_TYPE=Release
        -D CMAKE_INSTALL_PREFIX=/usr
        -D LLVM_LIBDIR_SUFFIX=64
        -D CMAKE_INSTALL_DOCDIR=share/doc
        -D CMAKE_SKIP_INSTALL_RPATH=ON
        -D BUILD_SHARED_LIBS=ON
        -D LLVM_BUILD_DOCS=ON
        -D LLVM_ENABLE_SPHINX=ON
        -D LLVM_EXTERNAL_LIT=/usr/bin/lit
        -D LLVM_INCLUDE_TESTS=ON
        -D LLVM_LINK_LLVM_DYLIB=ON
        -D LLVM_MAIN_SRC_DIR="${srcdir}/llvm-${pkgver}.src"
        -D SPHINX_WARNINGS_AS_ERRORS=OFF
    )

    cmake ${cmake_args[@]}

    ninja -C flarebird-build
}

package() {
    cd ${pkgname}-${pkgver}.src

    DESTDIR=${pkgdir} ninja -C flarebird-build install

    # https://bugs.llvm.org/show_bug.cgi?id=42455
    install -Dm644 -t ${pkgdir}/usr/share/man/man1 docs/ld.lld.1

    # Remove documentation sources
    rm -r ${pkgdir}/usr/share/doc/lld/html/{_sources,.buildinfo}
}