# Contributor: Rasmus Thomsen <oss@cogitri.dev>
# Contributor: Jakub Jirutka <jakub@jirutka.cz>
# Contributor: Shiz <hi@shiz.me>
# Contributor: Jeizsm <jeizsm@gmail.com>
# Contributor: Ariadne Conill <ariadne@dereferenced.org>
# Maintainer: psykose <alice@ayaya.dev>
pkgname=rust
pkgver=1.68.0
_llvmver=15
_bootver=1.67.0
pkgrel=0
pkgdesc="The Rust Programming Language"
url="https://www.rust-lang.org/"
arch="all"
license="Apache-2.0 AND MIT"

# 'cc' is needed at runtime just for linking. Someday rustc might invoke
# the linker directly, and then we'll only need 'ld'.
# See: https://github.com/rust-lang/rust/issues/11937
depends="gcc musl-dev"

# * Rust is self-hosted, so you need rustc (and cargo) to build rustc...
#   The last revision of this abuild that does not depend on itself (uses
#   prebuilt rustc and cargo) is 2e6769eb39eaff3029d8298fc02856623c563cd8.
# * Don't add libgit2-dev into make dependencies. There's no compatibility
#   guarantees between libgit2-sys and arbitrary system libgit2 versions;
#   when system libgit2 is upgraded to a new minor version, it may break
#   cargo and since we need cargo to rebuild cargo... this already happened
#   several times. For this reason we build cargo with vendored libgit2.
makedepends_build="
	!libgit2-dev
	cargo-bootstrap=>$_bootver
	coreutils
	curl-dev
	file
	libssh2-dev
	llvm$_llvmver-dev
	llvm$_llvmver-test-utils
	openssl-dev>3
	python3
	rust-bootstrap=>$_bootver
	tar
	wasi-libc
	xz-dev
	zlib-dev
	"
makedepends_host="
	curl-dev
	libssh2-dev
	llvm$_llvmver-dev
	openssl-dev>3
	zlib-dev
	"

# XXX: This is a hack to allow this abuild to depend on itself. Adding "rust"
# to makedepends would not work, because abuild implicitly removes $pkgname
# and $subpackages from the abuild's dependencies.
provides="rust-bootstrap=$pkgver-r$pkgrel"
# This is needed for -src that contains some testing binaries.
options="!archcheck"

case "$CARCH" in
armhf|armv7|riscv64)
	# +crt-static still broken here.
	options="$options !check"
	;;
*)
	;;
esac

subpackages="
	$pkgname-dbg
	$pkgname-wasm
	$pkgname-analysis
	$pkgname-gdb::noarch
	$pkgname-lldb::noarch
	$pkgname-clippy
	$pkgname-doc
	$pkgname-src::noarch
	cargo
	cargo-bash-completions:_cargo_bashcomp:noarch
	cargo-zsh-completion:_cargo_zshcomp:noarch
	cargo-doc:_cargo_doc:noarch
	rustfmt
	"
source="https://static.rust-lang.org/dist/rustc-$pkgver-src.tar.xz
	alpine-move-py-scripts-to-share.patch
	alpine-target.patch
	do-not-install-libunwind-source.patch
	gcc-eh-libunwind.patch
	install-template-shebang.patch
	musl-fix-linux_musl_base.patch
	need-rpath.patch
	need-ssp_nonshared.patch
	no-export-ld-library-path.patch
	system-wasm-ld.patch
	check-rustc
	"
builddir="$srcdir/rustc-$pkgver-src"

# secfixes:
#   1.66.1-r0:
#     - CVE-2022-46176
#   1.56.1-r0:
#     - CVE-2021-42574
#   1.52.1-r1:
#     - CVE-2021-29922
#   1.51.0-r2:
#     - CVE-2020-36323
#     - CVE-2021-31162
#   1.34.2-r0:
#     - CVE-2019-12083
#   1.26.0-r0:
#     - CVE-2019-16760

# We have to add new arches in multiple steps:
# 1. Compile with the upstream triplets, compiling alpine's triplets in
# 2. Compile again, now with our triplets selected as build/target, now that
#    rustc knows about them
_build="$CBUILD"
_target="$CTARGET"

_rlibdir="usr/lib/rustlib/$_target/lib"
_sharedir="usr/share/rust"

ldpath="/$_rlibdir"

export OPENSSL_NO_VENDOR=1
export RUST_BACKTRACE=1

# rust checksums files in vendor/, but we have to patch a few files...
_clear_vendor_checksums() {
	sed -i 's/\("files":{\)[^}]*/\1/' vendor/$1/.cargo-checksum.json
}

build() {
	if [ "$_build" != "$_target" ]; then
		export PKG_CONFIG_ALLOW_CROSS=1
	fi

	# absolutely do not set these here, rust "knows" what it's doing
	unset CARGO_PROFILE_RELEASE_LTO
	unset CARGO_PROFILE_RELEASE_OPT_LEVEL
	unset CARGO_PROFILE_RELEASE_PANIC
	unset CARGO_PROFILE_RELEASE_CODEGEN_UNITS

	export CFLAGS="$CFLAGS -O2"
	export CXXFLAGS="$CXXFLAGS -O2"

	# todo: try enable lto:
	# --set="rust.lto=thin"
	# this fails when using the stage2 compiler with:
	# thread 'main' panicked at 'range start index 1 out of range for slice of length 0', compiler/rustc_driver/src/lib.rs:988:17
	# on a rustc -vV invocation. the slice is
	# pub fn handle_options(args: &[String]) -> Option<getopts::Matches> {
	#     // Throw away the first argument, the name of the binary
	#     let args = &args[1..];
	# which should not be null with -vV?
	./configure \
		--build="$_build" \
		--host="$_target" \
		--target="$_target,wasm32-wasi,wasm32-unknown-unknown" \
		--prefix="/usr" \
		--release-channel="stable" \
		--enable-local-rust \
		--local-rust-root="/usr" \
		--llvm-root="/usr/lib/llvm$_llvmver" \
		--disable-docs \
		--enable-extended \
		--tools="analysis,cargo,clippy,src,rustfmt" \
		--enable-llvm-link-shared \
		--enable-option-checking \
		--enable-locked-deps \
		--enable-profiler \
		--enable-vendor \
		--dist-compression-formats=gz \
		--python="python3" \
		--set="rust.musl-root=/usr" \
		--set="rust.codegen-units=1" \
		--set="rust.codegen-units-std=1" \
		--set="rust.parallel-compiler=false" \
		--set="rust.description=Alpine Linux" \
		--set="target.$_target.llvm-config=/usr/lib/llvm$_llvmver/bin/llvm-config" \
		--set="target.$_target.musl-root=/usr" \
		--set="target.$_target.crt-static=false" \
		--set="target.$_target.cc=${CROSS_COMPILE}cc" \
		--set="target.$_target.cxx=${CROSS_COMPILE}c++" \
		--set="target.$_target.ar=${CROSS_COMPILE}ar" \
		--set="target.$_target.linker=${CROSS_COMPILE}cc" \
		--set="target.$_build.musl-root=/usr" \
		--set="target.$_build.crt-static=false" \
		--set="target.$_build.cc=cc" \
		--set="target.$_build.cxx=c++" \
		--set="target.$_build.ar=ar" \
		--set="target.$_build.linker=cc" \
		--set="target.wasm32-unknown-unknown.sanitizers=false" \
		--set="target.wasm32-unknown-unknown.profiler=false" \
		--set="target.wasm32-unknown-unknown.linker=lld" \
		--set="target.wasm32-wasi.sanitizers=false" \
		--set="target.wasm32-wasi.profiler=false" \
		--set="target.wasm32-wasi.wasi-root=/usr/share/wasi-sysroot"

	# Allow warnings instead of just aborting the build
	sed 's/#deny-warnings = .*/deny-warnings = false/' -i config.toml
	sed 's|deny(warnings,|deny(|' -i src/bootstrap/lib.rs

	python3 ./x.py dist --jobs ${JOBS:-2}
}

check() {
	# At this moment lib/rustlib/$CTARGET/lib does not contain a complete
	# copy of the .so libs from lib (they will be copied there during
	# 'x.py install'). Thus we must set LD_LIBRARY_PATH for tests to work.
	# This is related to change-rpath-to-rustlib.patch.

	msg "Setting up test env..."

	mkdir -p "$builddir/test-rustc"

	tar xf "$builddir"/build/dist/rustc-$pkgver-$_target.tar.gz \
		-C "$builddir/test-rustc" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/rust-std-$pkgver-$_target.tar.gz \
		-C "$builddir/test-rustc" --strip-components=2 --exclude=manifest.in --no-same-owner

	export LD_LIBRARY_PATH="$builddir/test-rustc/lib/rustlib/$CTARGET/lib"

	msg "Sanity checks..."
	"$srcdir"/check-rustc "$builddir"/test-rustc/bin/rustc

	# XXX: There's some problem with these tests, we will figure it out later.
	#	make check \
	#		LD_LIBRARY_PATH="$_stage0dir/lib" \
	#		VERBOSE=1

	# these rebuild the whole compiler which takes a long time
	# msg "Running tests for cargo..."
	# CFG_DISABLE_CROSS_TESTS=1 python3 ./x.py test --no-fail-fast src/tools/cargo

	unset LD_LIBRARY_PATH
}

package() {
	# merged into main package
	provides="rust-stdlib=$pkgver-r$pkgrel"
	replaces="rust-stdlib"

	mkdir -p "$pkgdir/usr"

	cd "$pkgdir"

	tar xf "$builddir"/build/dist/rustc-$pkgver-$_target.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/rust-std-$pkgver-$_target.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/rustc-dev-$pkgver-$_target.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/rust-analysis-$pkgver-$_target.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/rust-src-$pkgver.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/cargo-$pkgver-$_target.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/clippy-$pkgver-$_target.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/rustfmt-$pkgver-$_target.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/rust-std-$pkgver-wasm32-unknown-unknown.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner
	tar xf "$builddir"/build/dist/rust-std-$pkgver-wasm32-wasi.tar.gz \
		-C "$pkgdir/usr" --strip-components=2 --exclude=manifest.in --no-same-owner

	# We don't want to include stuff like rust-llvm-* tools, as we will use the
	# system tools.
	rm -f usr/lib/rustlib/"$_target"/bin/rust-llvm-*

	# Python scripts are noarch, so move them to /usr/share.
	# Requires move-py-scripts-to-share.patch to be applied.
	_mv usr/lib/rustlib/etc/*.py $_sharedir/etc/
	rmdir -p usr/lib/rustlib/etc 2>/dev/null || true

	_mv usr/etc/bash_completion.d/cargo usr/share/bash-completion/completions/
	rmdir -p usr/etc/bash_completion.d 2>/dev/null || true

	_mv usr/lib/rustlib/src/rust usr/src/
	ln -s ../../../src/rust usr/lib/rustlib/src/rust

	# Remove some clutter.
	cd "$pkgdir"/usr/lib/rustlib
	rm -f components install.log manifest-* rust-installer-version uninstall.sh
	if [ "$_build" != "$_target" ]; then
		rm -rf "$pkgdir"/usr/lib/rustlib/$_build
	fi

	# for some reason the tar archive gets some root-only files for rlibs
	find "$pkgdir"/usr/lib/rustlib -type f -perm -600 -exec chmod 644 {} \;
	find "$pkgdir"/usr/lib/rustlib -type f -perm -700 -exec chmod 755 {} \;
}

wasm() {
	pkgdesc="WebAssembly targets for rust"
	depends="rust=$pkgver-r$pkgrel lld wasi-sdk"

	amove usr/lib/rustlib/wasm32-*
}

analysis() {
	pkgdesc="Compiler analysis data for the Rust standard library"
	depends="$pkgname=$pkgver-r$pkgrel"

	amove $_rlibdir/../analysis
}

gdb() {
	pkgdesc="GDB pretty printers for Rust"
	depends="$pkgname=$pkgver-r$pkgrel gdb"

	amove usr/bin/rust-gdb*
	amove $_sharedir/etc/gdb_*.py
}

lldb() {
	pkgdesc="LLDB pretty printers for Rust"
	depends="$pkgname=$pkgver-r$pkgrel lldb py3-lldb"

	amove usr/bin/rust-lldb
	amove $_sharedir/etc/lldb_*.py
}

clippy() {
	pkgdesc="Lints to catch common mistakes and improve your Rust code"
	depends="$pkgname=$pkgver-r$pkgrel"

	amove usr/bin/cargo-clippy
	amove usr/bin/clippy-driver
}

src() {
	pkgdesc="$pkgdesc (source code)"
	depends="$pkgname=$pkgver-r$pkgrel"
	license="$license OFL-1.1 GPL-3.0-or-later GPL-3.0-with-GCC-exception CC-BY-SA-3.0 LGPL-3.0"

	amove usr/src
	amove usr/lib/rustlib/src
}

cargo() {
	pkgdesc="The Rust package manager"
	license="Apache-2.0 MIT UNLICENSE"
	depends="$pkgname=$pkgver-r$pkgrel"
	# XXX: See comment on top-level provides=.
	provides="cargo-bootstrap=$pkgver-r$pkgrel"

	amove usr/bin/cargo
	amove usr/libexec/cargo-credential-1password
}

rustfmt() {
	pkgdesc="Rust Code Formatter"
	license="Apache-2.0"
	depends="cargo=$pkgver-r$pkgrel"

	amove usr/bin/rustfmt
	amove usr/bin/cargo-fmt
}

_cargo_bashcomp() {
	pkgdesc="Bash completions for cargo"
	license="Apache-2.0 MIT"
	depends=""
	install_if="cargo=$pkgver-r$pkgrel bash-completion"

	amove usr/share/bash-completion
}

_cargo_zshcomp() {
	pkgdesc="ZSH completions for cargo"
	license="Apache-2.0 MIT"
	depends=""
	install_if="cargo=$pkgver-r$pkgrel zsh"

	amove usr/share/zsh/site-functions/_cargo
}

_cargo_doc() {
	pkgdesc="The Rust package manager (documentation)"
	license="Apache-2.0 MIT"
	install_if="docs cargo=$pkgver-r$pkgrel"

	# XXX: This is hackish!
	cd "$pkgdir"/../$pkgname-doc
	_mv usr/share/man/man1/cargo* "$subpkgdir"/usr/share/man/man1/
}

_mv() {
	local dest; for dest; do true; done  # get last argument
	mkdir -p "$dest"
	mv "$@"
}

sha512sums="
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03a179e31c95f88a98fb1ba6b2fd0baaf9fe1a74ade76d3096fe45ddc5e453c25109355e667783d9be1bcc585445d07b7270cb3e6e403de971049714f2c6f91a  alpine-move-py-scripts-to-share.patch
f87b12c6c3ccf8abc3a21d40631ed753efe313c601c5fdd5200cea16aa65878621700b6ca6b22c4f2334a8540dc7d23ef0ff9087fc65177433d56a700e56bb8c  alpine-target.patch
7af23c34096f7a03c5a1b40aa07e00dd6193743c872881018a9baa900f240c6e44918e481ab5ed7787a70ef361e4aeec2a7719bcd695f52988262e23271b44e5  do-not-install-libunwind-source.patch
92916225c21742941aaf415d75d330fe2baf77a8226c076e862f4413068d5dee7b08c4b3182f69957ea9a51a0dcde145031565289015b6e3c31894fb396e4eb1  gcc-eh-libunwind.patch
7d59258d4462eba0207739a5c0c8baf1f19d9a396e5547bb4d59d700eb94d50ba6add2e523f3e94e29e993821018594625ea4ac86304fb58f7f8c82622a26ab0  install-template-shebang.patch
416ac00f70645ca3afc6eb40b3c06ac4e6c13bf8d04109616c8170093aab3c1ddb19ace5252a37895f81d4bc6669918804dfd84eb0c5fa07c9e810dbffe39354  musl-fix-linux_musl_base.patch
2d401a01d2c2db92624d672018342907a41aa4a3842708c0a2ab694af0396d568aca4835d1075f244d77c0a4c45e67f893fd175fd97cd7f758090eba9972eba6  need-rpath.patch
b722bc2787748e208abdc50a496d6b155b2d786bb28cbd5726535534e322a87c191db161d94e06154e126eaf81ca3634f10b364b7212f0f3154e5cca859980bd  need-ssp_nonshared.patch
cbdb38a2701e079d362e76ff16a2549230f80bcb4dfd3561d240df331fb21d202cb720e18b97fe9b166db1f79b46fab949ce5de5e37af2ed78a10c7fe1dfcfc9  no-export-ld-library-path.patch
4ea59b28fa238b8bb0cb24847e5884b65beec5168e55fe41a1ff50e272f1cf49186ffaa71d133cebfdcb70901ea18b477d7618a1dd330ff6c08bed5af0e2bb78  system-wasm-ld.patch
c31fdfe8a9b3411576c75da46645cf0465b9053000a2ab49cf9b2f2733f679d6d33acbf236d67a20e14935d094a685453b7f1840180249f39d610fd0902c3125  check-rustc
"