# Contributor: Marian Buschsieweke <marian.buschsieweke@posteo.net>
# Maintainer: Marian Buschsieweke <marian.buschsieweke@posteo.net>
pkgname=c2rust
pkgver=0.20.0
pkgrel=0
pkgdesc="Transpile C99-compliant code to (unsafe) Rust code"
url="https://github.com/immunant/c2rust"
# riscv64, loongarch64: libc crate sup
# s390x: missing big endian support in c2rust-bitfields-derive
# ppc64le: tinycbor not packaged due to segfault in unit tests
arch="all !riscv64 !s390x !ppc64le !loongarch64"
license="BSD-3-Clause"
# Note: LLVM's CMake hooks check for presence of static libs and tools and
# failif they are missing. So they are needed for building even when linking
# dynamically
_llvmver=20
makedepends="
	cargo
	cargo-auditable
	clang$_llvmver-dev
	clang$_llvmver-extra-tools
	clang$_llvmver-static
	cmake
	libxml2-dev
	llvm$_llvmver-dev
	llvm$_llvmver-gtest
	llvm$_llvmver-static
	ncurses-dev
	openssl-dev
	rust
	tinycbor-dev
	"
checkdepends="
	python3
	py3-plumbum
	py3-psutil
	py3-toml
	"
source="
	$pkgname-$pkgver.tar.gz::https://github.com/immunant/c2rust/archive/refs/tags/v$pkgver.tar.gz
	0001-link-clang-dynamic.patch
	0002-use-system-tinycbor.patch
	0003-fix-compilation-with-llvm20.patch
	"

# Unit tests all fail using rust 1.86.0 with:
#
#    error[E0554]: #![feature] may not be used on the stable release channel
#
# and
#
#    error[E0635]: unknown feature `stdsimd`
#
# Eventually, unit tests should also run on stable rust
options="!check"

export CARGO_PROFILE_RELEASE_LTO="true"
export CARGO_PROFILE_RELEASE_PANIC="abort"
export CARGO_PROFILE_RELEASE_OPT_LEVEL="s"

prepare() {
	default_prepare

	cargo fetch --target="$CTARGET" --locked
}

build() {
	export PATH="$PATH:/usr/lib/llvm$_llvmver/bin/"
	cargo auditable build --release --frozen --package c2rust
}

check() {
	./scripts/test_translator.py tests
}

package() {
	mkdir -p "$pkgdir"/usr/bin "$pkgdir"/usr/lib
	for bin in c2rust c2rust-transpile; do
		install -D -m755 target/release/$bin -t "$pkgdir"/usr/bin/
	done
}

sha512sums="
96d045da1856fb0d2d8475763dde11886ed25713c56ee16aa43e07b6a830472d83297fb87ae5749d0b07085a0c3d1d877b0b467052f7330075fe065c76af34fc  c2rust-0.20.0.tar.gz
423079102d0a350a2b2ba80e6f3f2c70f76db2d5d062d7308d217ea9a2608a521ae11b10b85733d12824284971a65af5fc598eedb29b4796f44ec689e5a553b1  0001-link-clang-dynamic.patch
be29e0f4576301b64f5fc38684ddb90e469526be4ce8ef428feee0d5962748c428045dcb81635ff92e132daebb1fa1b338a81ce1ea13d02b802ec057d0653b93  0002-use-system-tinycbor.patch
c4e7d0d837087b0adaa0ce740e101c9e0128590d2705020241495bca1e56ed1d551f75ccc4d73bfec4ed485ef06b2017c3e5060ee76f0079070fa41e10b1a72f  0003-fix-compilation-with-llvm20.patch
"