# Description: The Rust language for WebAssembly
# URL: https://www.rust-lang.org/
# Maintainer: Tim Biermann, tbier at posteo dot de
# Depends on: wasi-libc wasm-component-ld
# Optional: libgit2 sccache

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

source=(https://static.rust-lang.org/dist/${name/-wasm/}c-$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/-wasm/}c-$version-src/build/cache/${_date} || true
      cp $(get_filename $file) ${SRC}/${name/-wasm/}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}' $SRC/rustc-$version-src/src/stage0)"
  local RUSTC="$(awk -F'=' '/^compiler_version=/ {print $2}' $SRC/rustc-$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 "${name/-wasm/}c-$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

  clangdir="$(/usr/bin/clang -print-resource-dir)"

  # bootstrap.toml {{{
  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 = true
codegen-tests = false
backtrace-on-ice = true
lld = false
bootstrap-override-lld = "external"
llvm-bitcode-linker = false
jemalloc = true
rpath = false
frame-pointers = true
deny-warnings = false
lto = "fat"
download-rustc = false

[build]
build-stage = 1
dist-stage = 2
install-stage = 2
host = ["x86_64-unknown-linux-gnu"]
target = ["wasm32-unknown-unknown", "wasm32-wasip1", "wasm32-wasip2","wasm32v1-none","wasm32-wasip1-threads"]
description = "CRUX"
docs = false
extended = false
sanitizers = false
profiler = true
python = "/usr/bin/python3"

[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 = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
ar = "/usr/bin/llvm-ar"
ranlib = "/usr/bin/llvm-ranlib"
optimized-compiler-builtins = "$clangdir/lib/linux/libclang_rt.builtins-x86_64.a"

[target.i686-unknown-linux-gnu]
llvm-config = "/usr/bin/llvm-config"
llvm-filecheck = "/usr/bin/FileCheck"
cc = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
ar = "/usr/bin/llvm-ar"
ranlib = "/usr/bin/llvm-ranlib"
optimized-compiler-builtins = "$clangdir/lib/linux/libclang_rt.builtins-i386.a"

[target.wasm32-wasi]
sanitizers = false
profiler = false
wasi-root = "/usr/share/wasi-sysroot"
linker = "/usr/bin/wasm-ld"

[target.wasm32-unknown-unknown]
cc = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
ar = "/usr/bin/llvm-ar"
ranlib = "/usr/bin/llvm-ranlib"
profiler = false
sanitizers = false
linker = "/usr/bin/wasm-ld"
default-linker = "wasm-ld"

[target.wasm32-wasip1]
cc = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
ar = "/usr/bin/llvm-ar"
ranlib = "/usr/bin/llvm-ranlib"
linker = "/usr/bin/wasm-ld"
default-linker = "wasm-ld"
sanitizers = false
profiler = false
wasi-root = "/usr/share/wasi-sysroot"

[target.wasm32-wasip2]
cc = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
ar = "/usr/bin/llvm-ar"
ranlib = "/usr/bin/llvm-ranlib"
linker = "/usr/bin/wasm-ld"
default-linker = "wasm-ld"
sanitizers = false
profiler = false
wasi-root = "/usr/share/wasi-sysroot"

[target.wasm32v1-none]
cc = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
ar = "/usr/bin/llvm-ar"
ranlib = "/usr/bin/llvm-ranlib"
linker = "/usr/bin/wasm-ld"
default-linker = "wasm-ld"
sanitizers = false
profiler = false

[target.wasm32-wasip1-threads]
cc = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
ar = "/usr/bin/llvm-ar"
ranlib = "/usr/bin/llvm-ranlib"
linker = "/usr/bin/wasm-ld"
default-linker = "wasm-ld"
sanitizers = false
profiler = false
wasi-root = "/usr/share/wasi-sysroot"
EOF
  # }}}

  cat $SRC/bootstrap.toml

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

  if [ -e '/usr/bin/sccache' ]; then
    export RUSTC_WRAPPER='/usr/bin/sccache'
    export SCCACHE_IDLE_TIMEOUT='1500'
  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'

  export RUST_BACKTRACE=full
  export PKG_CONFIG_ALLOW_CROSS=1

  { [ ! -e /usr/include/libssh2.h ] ||
    export LIBSSH2_SYS_USE_PKG_CONFIG=1; }

  unset CFLAGS CXXFLAGS

  DESTDIR=$PKG /usr/bin/python3 ./x.py --config="${SRC}"/bootstrap.toml install -j ${JOBS-1}

  # cleanup
  rm -r $PKG/usr/{bin/,lib/librustc_driver-*}
  rm -r $PKG/usr/share/{doc,man}
  rm -r $PKG/usr/lib/rustlib/{components,manifest-rustc,rust-installer-version,uninstall.sh,etc,install.log}
  rm -rf $PKG/usr/lib/rustlib/x86_64-unknown-linux-gnu/bin

  # 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)

  install -d $PKG/etc/revdep.d
  echo "/usr/lib/rustlib/wasm32-unknown-unknown/lib" >$PKG/etc/revdep.d/$name
  echo "/usr/lib/rustlib/wasm32-wasi/lib" >$PKG/etc/revdep.d/$name

  rm -rf $PKG/etc/target-spec-json-schema.json
  find $PKG/usr/lib/rustlib -type f -perm -600 -exec chmod 644 {} \+
  find $PKG/usr/lib/rustlib -type f -perm -700 -exec chmod 755 {} \+
}