packages/rust/PKGBUILD

# POWER Maintainer: Alexander Baldeck <alex.bldck@gmail.com>
# Maintainer: Johannes Löthberg <johannes@kyriasis.com>
# Maintainer: Jan Alexander Steffens (heftig) <heftig@archlinux.org>
# Contributor: Alexander F Rødseth <xyproto@archlinux.org>
# Contributor: Daniel Micay <danielmicay@gmail.com>
# Contributor: userwithuid <userwithuid@gmail.com>

pkgbase=rust
pkgname=(
  rust
  rust-src
)
epoch=1
pkgver=1.81.0
pkgrel=1
pkgdesc="Systems programming language focused on safety, speed and concurrency"
url=https://www.rust-lang.org/
arch=(powerpc64le powerpc64 powerpc riscv64)
license=("Apache-2.0 OR MIT")
options=(
  !emptydirs
  !lto
)
[ "${CARCH}" == 'powerpc' ] && options+=(!debug)
depends=(
  curl
  gcc
  gcc-libs
  libssh2
  llvm-libs
)
makedepends=(
  cmake
  libffi
  lld
  llvm
  ninja
  perl
  python
  rust
  wasi-libc
)
checkdepends=(
  gdb
  procps-ng
)
source=(
  "https://static.rust-lang.org/dist/rustc-$pkgver-src.tar.gz"{,.asc}
  0001-bootstrap-Change-libexec-dir.patch
  0002-bootstrap-Change-bash-completion-dir.patch
  0003-compiler-Change-LLVM-targets.patch
  xxxx-Use-ELFv2-ABI-on-all-powerpc64-targets.patch
)
b2sums=('0bc0ae9207306458c6721ddaff0bf56280a4ca4918502b44cfdfc200e73c4a5af88c95f9df53c1fe927f94ffe09d855e21dd6a749331041d719704dc209940ba'
        'SKIP'
        'ef56a70741bae70a95695b4d05d1a6395f545e671c9d016c7180732f69a09b828ff5e16964ef16f9ebec55dd778a1b50927275cd4c21a7b78ae4959946a0657c'
        'd20861a8a8e16d4bb0143f00d4beb42e2c52eeb2c1894e9f9c04e3d74ecd750d9bdacf15bb39fd0ade4487b9d3d14da24cf5f25ceab112f096fddcd329320a15'
        '64391cf17e7d801fb263e9d637928c3a2f6aa11aca6afbf115be4e38e9afce42371ed4884929cf11d6c74c2aa497fb26abbba1812d4f31f44dcda38e4978a33f'
        'a12ab3f62987d3de257ef4bb66220559efe46c92f0d9820390ed36bf404c56f05253619b5c46e37b44dc30386f54ef3c856124a1cc1a8b854b7f6426183b2d6d')
validpgpkeys=(
  108F66205EAEB0AAA8DD5E1C85AB96E6FA1BE5FE  # Rust Language (Tag and Release Signing Key) <rust-key@rust-lang.org>
)

prepare() {
  cd rustc-$pkgver-src

  # Patch bootstrap so that rust-analyzer-proc-macro-srv
  # is in /usr/lib instead of /usr/libexec
  patch -Np1 -i ../0001-bootstrap-Change-libexec-dir.patch

  # Put bash completions where they belong
  patch -Np1 -i ../0002-bootstrap-Change-bash-completion-dir.patch

  # Use our *-pc-linux-gnu targets, making LTO with clang simpler
  patch -Np1 -i ../0003-compiler-Change-LLVM-targets.patch

  # Ensure powerpc64 uses ELFv2
  patch -Np1 -i ../xxxx-Use-ELFv2-ABI-on-all-powerpc64-targets.patch

  _rust_target="\"${CHOST}\""
  case "${CARCH}" in
    powerpc)
      # fails to link with -O3 due to 32bit related relocation problems
      export RUSTFLAGS="-C opt-level=1"
    ;;
    riscv64)
      _rust_target='"riscv64gc-unknown-linux-gnu"'
    ;;
  esac

  cat >config.toml <<END
profile = "user"
change-id = 123711

[llvm]
link-shared = true

[build]
target = [
  ${_rust_target}
]
cargo = "/usr/bin/cargo"
rustc = "/usr/bin/rustc"
rustfmt = "/usr/bin/rustfmt"
locked-deps = true
vendor = true
tools = [
  "cargo",
  "clippy",
  "rustdoc",
  "rustfmt",
  "rust-analyzer-proc-macro-srv",
  "analysis",
  "src",
  "rust-demangler",
]
sanitizers = true
profiler = true

# Generating docs fails with the wasm32-* targets
docs = false

[install]
prefix = "/usr"

[rust]
debuginfo-level = 1
debuginfo-level-std = 2
channel = "stable"
description = "Arch POWER $pkgbase $epoch:$pkgver-$pkgrel"
rpath = false
frame-pointers = true
backtrace-on-ice = true
jemalloc = true

# Causes "error: --remap-path-prefix must contain '=' between FROM and TO"
# even after creating the missing ~/.cargo/registry/src dir.
# https://github.com/rust-lang/rust/issues/117885
remap-debuginfo = false

# LLVM crashes when passing an object through ThinLTO twice.  This is triggered
# when using rust code in cross-language LTO if libstd was built using ThinLTO.
# http://blog.llvm.org/2019/09/closing-gap-cross-language-lto-between.html
# https://github.com/rust-lang/rust/issues/54872
codegen-units-std = 1

# musl target produces warnings
deny-warnings = false

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

[target.${_rust_target}]
cc = "/usr/bin/gcc"
cxx = "/usr/bin/g++"
ar = "/usr/bin/gcc-ar"
ranlib = "/usr/bin/gcc-ranlib"
llvm-config = "/usr/bin/llvm-config"
END
}

_pick() {
  local p="$1" f d; shift
  for f; do
    d="$srcdir/$p/$f"
    mkdir -p "$(dirname "$d")"
    mv "$f" "$d"
    rmdir -p --ignore-fail-on-non-empty "$(dirname "$f")"
  done
}

build() {
  cd rustc-$pkgver-src

  export RUST_BACKTRACE=1
  unset CFLAGS CXXFLAGS LDFLAGS

  DESTDIR="$srcdir/dest-rust" python ./x.py install -j "$(nproc)"

  cd ../dest-rust

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

  # licenses for main rust package
  local ldir="usr/share/licenses/rust" f d
  mkdir -p "$ldir"
  for f in usr/share/doc/*/{COPYRIGHT,LICENSE}*; do
    d="$(dirname "$f")"
    case $f in
      */LICENSE-APACHE) rm -v "$f" ;;
      *) mv -v "$f" "$ldir/${f##*/}.${d##*/}" ;;
    esac
    rmdir -p --ignore-fail-on-non-empty "$d"
  done

  _pick dest-src  usr/lib/rustlib/src
}

package_rust() {
  optdepends=(
    'gdb: rust-gdb script'
    'lldb: rust-lldb script'
  )
  provides=(
    cargo
    rustfmt
  )
  conflicts=(
    cargo
    'rust-docs<1:1.56.1-3'
    rustfmt
  )
  replaces=(
    cargo
    cargo-tree
    'rust-docs<1:1.56.1-3'
    rustfmt
  )

  cp -a dest-rust/* "$pkgdir"
}

package_rust-src() {
  pkgdesc="Source code for the Rust standard library"
  depends=(rust)

  cp -a dest-src/* "$pkgdir"

  install -Dt "$pkgdir/usr/share/licenses/$pkgname" -m644 \
    rustc-$pkgver-src/{COPYRIGHT,LICENSE-MIT}
}

# vim:set ts=2 sw=2 et: