pkgname=(rustc rustc-libs-32bit)
pkgbase=rustc
pkgver=1.83.0
pkgrel=1
pkgdesc="Systems programming language focused on safety, speed and concurrency"
arch=('x86_64')
url="https://blog.rust-lang.org/"
license=('Apache-2.0 OR MIT')
depends=(
    'bash'
    'curl'
    'gcc'
    'gcc-libs'
    'glibc'
    'libssh2'
    'llvm-libs'
    'openssl'
    'zlib'
)
makedepends=(
    'clang'
    'cmake'
    'gcc-libs-32bit'
    'glibc-32bit'
    'libffi'
    'llvm'
    'ninja'
    'perl'
    'python'
    'sqlite'
)
options=('!emptydirs' '!lto')
source=(https://static.rust-lang.org/dist/${pkgbase}-${pkgver}-src.tar.xz)
sha256sums=(7b11d4242dab0921a7d54758ad3fe805153c979c144625fecde11735760f97df)

prepare() {
    cd ${pkgbase}-${pkgver}-src

    cat << EOF > config.toml
# see config.toml.example for more possible options
# See the 8.4 book for an old example using shipped LLVM
# e.g. if not installing clang, or using a version before 13.0

# Tell x.py the editors have reviewed the content of this file
# and updated it to follow the major changes of the building system,
# so x.py will not warn us to do such a review.
change-id = 131075

[llvm]
# When using system llvm prefer shared libraries
link-shared = true

# Do not download pre-built LLVM, instead either use the system
# LLVM or build LLVM from the shipped source.
download-ci-llvm = false

# If building the shipped LLVM source, only enable the x86 target
# instead of all the targets supported by LLVM.
# targets = "X86"

[build]
target = [
    "x86_64-unknown-linux-gnu",
    "i686-unknown-linux-gnu",
]

# omit docs to save time and space (default is to build them)
docs = false

python = "python3"

# install extended tools: cargo, clippy, etc
extended = true

# Do not query new versions of dependencies online.
locked-deps = true

# Specify which extended tools (those from the default install).
tools = ["cargo", "clippy", "rustdoc", "rustfmt"]

# Use the source code shipped in the tarball for the dependencies.
# The combination of this and the "locked-deps" entry avoids downloading
# many crates from Internet, and makes the Rustc build more stable.
vendor = true

[install]
prefix = "/usr"
libdir = "/usr/lib64"
docdir = "share/doc/rustc-${pkgver}"

[rust]
channel = "stable"
description = "Flarebird ${pkgname} ${pkgver}-${pkgrel}"

# Enable the same optimizations as the official upstream build.
lto = "thin"
codegen-units = 1

[target.x86_64-unknown-linux-gnu]
cc = "/usr/bin/gcc"
cxx = "/usr/bin/g++"
ar = "/usr/bin/gcc-ar"
ranlib = "/usr/bin/gcc-ranlib"
llvm-config = "/usr/bin/llvm-config"

[target.i686-unknown-linux-gnu]
cc = "/usr/bin/gcc"
cxx = "/usr/bin/g++"
ar = "/usr/bin/gcc-ar"
ranlib = "/usr/bin/gcc-ranlib"
llvm-config = "/usr/bin/llvm-config"
EOF

    sed '/MirOpt/d' -i src/bootstrap/src/core/builder.rs
}

build() {
    cd ${pkgbase}-${pkgver}-src

    export RUST_BACKTRACE=1

    export RUSTUP_DIST_SERVER="https://rsproxy.cn"
    export RUSTUP_UPDATE_ROOT="https://rsproxy.cn/rustup"

    [ ! -e /usr/include/libssh2.h ] || export LIBSSH2_SYS_USE_PKG_CONFIG=1
    [ ! -e /usr/include/sqlite3.h ] || export LIBSQLITE3_SYS_USE_PKG_CONFIG=1

    python3 x.py build -j "$(nproc)"
}

package_rustc() {
    cd ${pkgbase}-${pkgver}-src

    DESTDIR=${pkgdir} python3 x.py install rustc std
    DESTDIR=${pkgdir} python3 x.py install --stage=1 cargo clippy rustfmt

    rm -fv /usr/share/doc/${pkgname}-${pkgver}/*.old
    install -vm644 README.md ${pkgdir}/usr/share/doc/${pkgname}-${pkgver}

    install -vdm755 ${pkgdir}/usr/share/zsh/site-functions
    ln -sfv /usr/share/zsh/site-functions/_cargo ${pkgdir}/usr/share/zsh/site-functions

    install -vdm755 ${pkgdir}/usr/share/bash-completion/completions
    mv -v ${pkgdir}/etc/bash_completion.d/cargo ${pkgdir}/usr/share/bash-completion/completions

    unset LIB{SSH2,SQLITE3}_SYS_USE_PKG_CONFIG

    # delete unnecessary files, e.g. files only used for the uninstall script
    rm -v ${pkgdir}/usr/lib64/rustlib/{components,install.log,rust-installer-version,uninstall.sh}
    rm -v ${pkgdir}/usr/lib64/rustlib/manifest-*

    _pick dest-i686 ${pkgdir}/usr/lib64/rustlib/i686-unknown-linux-gnu
}

package_rustc-libs-32bit() {
    pkgdesc="32-bit target and libraries for Rust"
    depends=('gcc-libs-32bit' 'glibc-32bit' 'rustc')

    cp -a dest-i686/* ${pkgdir}
}