# Description: The Rust language with Cargo included.
# URL: https://www.rust-lang.org/
# Maintainer: CRUX System Team, core-ports at crux dot nu
# Depends on: compiler-rt lld
# Optional: clang libgit2 polly sccache

name=rust
version=1.96.0
_date=2026-04-16
_rustc=1.95.0
_cargo=$_rustc
release=1

source=(https://static.rust-lang.org/dist/${name}c-$version-src.tar.xz
    https://static.rust-lang.org/dist/$_date/rust-std-$_rustc-x86_64-unknown-linux-gnu.tar.xz
    https://static.rust-lang.org/dist/$_date/rustc-$_rustc-x86_64-unknown-linux-gnu.tar.xz
    https://static.rust-lang.org/dist/$_date/cargo-$_cargo-x86_64-unknown-linux-gnu.tar.xz
    0001-bootstrap-Change-libexec-dir.patch
    0002-bootstrap-Change-bash-completion-dir.patch
    0003-bootstrap-Workaround-for-system-stage0.patch
    0004-compiler-Change-LLVM-targets.patch
    0005-compiler-Use-aarch64-linux-gnu-gcc-to-link-aarch64-t.patch
    0006-compiler-Swap-primary-and-secondary-lib-dirs.patch
)

unpack_source() {
    for file in ${source[@]}; do
        case ${file##*/} in
            rustc-${version}-src.tar.xz)
                echo "Unpacking $(get_filename $file)";
                bsdtar -p -o -C ${SRC} -xf $(get_filename $file) ;;
            *.tar.xz)
                echo "Copying $(get_filename $file)";
                mkdir -p ${SRC}/${name}c-$version-src/build/cache/${_date} || true
                cp $(get_filename $file) ${SRC}/${name}c-$version-src/build/cache/${_date} ;;
            *)
                cp $(get_filename $file) ${SRC} ;;
        esac
    done
}

_check_version() {
    local ERROR
    local DATE="$(awk -F'=' '/^compiler_date=/ {print $2}' $SRC/${name}c-$version-src/src/stage0)"
    local RUSTC="$(awk -F'=' '/^compiler_version=/ {print $2}' $SRC/${name}c-$version-src/src/stage0)"

    printf '\033[0;32m%s\033[0m\n' "Checking versions for bootstrap compiler.."
    printf '\033[0;32m%s\033[0m\n' "Got _date = $_date && _rustc = $_rustc"

    if [ "$DATE" != "$_date" ]; then
        printf '\e[1;31m%-6s\e[m\n' "Error: _date $_date != $DATE"
        ERROR=1
    fi
    if [ "$RUSTC" != "$_rustc" ]; then
        printf '\e[1;31m%-6s\e[m\n' "Error: _rustc $_rustc != $RUSTC"
        ERROR=1
    fi

    [ $ERROR ] && exit 1
    printf '\033[0;32m%s\033[0m\n' "Versions check out! Proceeding.."
    unset DATE RUSTC ERROR
}

build() {
    _check_version

    cd "${name}c-$version-src"

    patch -p1 -i $SRC/0001-bootstrap-Change-libexec-dir.patch
    patch -p1 -i $SRC/0002-bootstrap-Change-bash-completion-dir.patch
    patch -p1 -i $SRC/0003-bootstrap-Workaround-for-system-stage0.patch
    patch -p1 -i $SRC/0004-compiler-Change-LLVM-targets.patch
    patch -p1 -i $SRC/0005-compiler-Use-aarch64-linux-gnu-gcc-to-link-aarch64-t.patch
    patch -p1 -i $SRC/0006-compiler-Swap-primary-and-secondary-lib-dirs.patch

cat <<- EOF > $SRC/bootstrap.toml
profile = "dist"
change-id = 154508

[llvm]
download-ci-llvm = false

[install]
prefix = "/usr"

[rust]
channel = "stable"
codegen-units = 1
codegen-units-std = 1
debuginfo-level = 1
debuginfo-level-std = 2
debug-assertions = false
remap-debuginfo = false
codegen-tests = false
backtrace-on-ice = true
lld = false
bootstrap-override-lld = "external"
llvm-bitcode-linker = false
rpath = false
frame-pointers = true
deny-warnings = false
lto = "fat"

[build]
target = ["x86_64-unknown-linux-gnu", "i686-unknown-linux-gnu"]
description = "CRUX"
tools = ["cargo",
  "clippy",
  "rustfmt",
  "analysis",
  "src",
  "rust-demangler",
  "rust-analyzer",
  "rust-analyzer-proc-macro-srv",
  "rustdoc",
  "rust-src"]
docs = false
extended = true
sanitizers = true
profiler = true
vendor = true
locked-deps = true
python = "/usr/bin/python3"
optimized-compiler-builtins = true
@CARGO@
@RUST@
@RUSTFMT@
@CCACHE@

[dist]
compression-formats = ["gz"]
compression-profile = "fast"

[target.x86_64-unknown-linux-gnu]
llvm-config = "/usr/bin/llvm-config"
llvm-filecheck = "/usr/bin/FileCheck"
cc = @TARGETCC@
cxx = @TARGETCXX@
ar = @TARGETAR@
ranlib = @TARGETRANLIB@
@CLANGDIR64@

[target.i686-unknown-linux-gnu]
llvm-config = "/usr/bin/llvm-config"
llvm-filecheck = "/usr/bin/FileCheck"
cc = @TARGETCC@
cxx = @TARGETCXX@
ar = @TARGETAR@
ranlib = @TARGETRANLIB@
@CLANGDIR32@
EOF

    if [ -e '/usr/bin/rustc' ]; then
        if ! /usr/bin/ldd /usr/bin/rustc /usr/bin/cargo | grep -q -E '.*not found'; then
            sed -e 's|@CARGO@|cargo = "/usr/bin/cargo"|' \
              -e 's|@RUST@|rustc = "/usr/bin/rustc"|' \
              -e 's|@RUSTFMT@|rustfmt = "/usr/bin/rustfmt"|' \
              -i $SRC/bootstrap.toml
        else
            sed -e 's|@CARGO@||' \
              -e 's|@RUST@||' \
              -e 's|@RUSTFMT@||' \
              -i $SRC/bootstrap.toml
            printf "\e[031mShared library missing, not using system rust to bootstrap.\033[0m\n"
        fi
    else
        sed -e 's|@CARGO@||' -e 's|@RUST@||' -e 's|@RUSTFMT@||' -i $SRC/bootstrap.toml
    fi

    if prt-get isinst clang; then
        clangdir="$(/usr/bin/clang -print-resource-dir)"
        sed -e 's|@TARGETCC@|"clang"|g' \
          -e 's|@TARGETCXX@|"clang++"|g' \
          -e 's|@TARGETAR@|"llvm-ar"|g' \
          -e 's|@TARGETRANLIB@|"llvm-ranlib"|g' \
          -e "s|@CLANGDIR64@|optimized-compiler-builtins = \"$clangdir/lib/linux/libclang_rt.builtins-x86_64.a\"|g" \
          -e "s|@CLANGDIR32@|optimized-compiler-builtins = \"$clangdir/lib/linux/libclang_rt.builtins-i386.a\"|g" \
          -i $SRC/bootstrap.toml
    else
        sed -e 's|@TARGETCC@|"gcc"|g' \
          -e 's|@TARGETCXX@|"g++"|g' \
          -e 's|@TARGETAR@|"gcc-ar"|g' \
          -e 's|@TARGETRANLIB@|"gcc-ranlib"|g' \
          -e 's|@CLANGDIR64@||g' \
          -e 's|@CLANGDIR32@||g' \
          -i $SRC/bootstrap.toml
    fi

    cat $SRC/bootstrap.toml

    mkdir "$PKGMK_SOURCE_DIR/rust" || true
    export CARGO_HOME="$PKGMK_SOURCE_DIR/rust"

    ## sccache currently leads to errors
    if [ -e '/usr/bin/sccache' ]; then
        sed -e 's|@CCACHE@|ccache = "sccache"|g' \
          -i $SRC/bootstrap.toml
      else
        sed -e 's|@CCACHE@||g' \
          -i $SRC/bootstrap.toml
    fi

    #error: field is never read: `id`
    #   --> src/bootstrap/lib.rs:280:5
    #   = note: `-D dead-code` implied by `-D warnings`
    export RUSTFLAGS+=' -A dead_code'

    unset CFLAGS CXXFLAGS

    { [ ! -e /usr/include/libssh2.h ] ||
        export LIBSSH2_SYS_USE_PKG_CONFIG=1; }
    export RUST_BACKTRACE=full
    DESTDIR=$PKG /usr/bin/python3 ./x.py --config="${SRC}"/bootstrap.toml install -j ${JOBS}

    prt-get isinst bash-completion || rm -r $PKG/usr/share/bash-completion
    prt-get isinst zsh || rm -r $PKG/usr/share/zsh

    install -d $PKG/etc/revdep.d
    echo "/usr/lib/rustlib/i686-unknown-linux-gnu/lib" > $PKG/etc/revdep.d/$name

    # cleanup
    rm -r $PKG/usr/share/doc
    rm $PKG/usr/lib/rustlib/{components,manifest-rustc,rust-installer-version,uninstall.sh}

    # Remove analysis data for libs that weren't installed
    local file lib
    while read -rd '' file; do
        lib="${file%.json}.rlib"
        lib="${lib/\/analysis\///lib/}"
        if [[ ! -e $lib ]]; then
            echo "missing '$lib'"
            rm -v "$file"
        fi
    done < <(find "$PKG/usr/lib/rustlib"  -path '*/analysis/*.json' -print0)

    find $PKG/usr -name "*.old" -delete
    rm $PKG/etc/target-spec-json-schema.json
    rm $PKG/usr/lib/rustlib/{install.log,manifest-*}
}