[COPY] --- T2-COPYRIGHT-BEGIN ---
[COPY] t2/package/*/rustc/rustc.desc
[COPY] Copyright (C) 2017 - 2025 The T2 SDE Project
[COPY] SPDX-License-Identifier: GPL-2.0
[COPY] --- T2-COPYRIGHT-END ---

[I] The Rust compiler

[T] The Rust language compiler.

[U] https://www.rust-lang.org/

[A] The Rust authors
[M] Rene Rebe <rene@t2-project.org>

[C] base/tool
[F] CROSS NO-LTO LATOMIC.mips LATOMIC.sparc LATOMIC.x86
[R] - alpha arc avr32 blackfin hppa hppa64 ia64 m68k microblaze nios2 openrisc sparc superh

[L] MIT APL
[S] Stable
[V] 1.88.0
[P] X -12------9 127.350

[CV-GROUP] rust
[CV-URL] https://forge.rust-lang.org/infra/other-installation-methods.html
[D] a49438deb8e28b4d668febacced891e63b7bbf3502120af352db2b58 rustc-1.88.0-src.tar.xz https://static.rust-lang.org/dist/

if [ $stagelevel -gt 1 ] && [ $prefix_auto = 1 ]; then
	prefix=opt/rust # TODO: maybe a config option
	set_confopt
fi

confopt=
cleanconfopt=0 runmake=0 runcargo=0

var_append GCC_WRAPPER_APPEND ' ' '-c?:-lz'

cargo_config() {
	mkdir -p $CARGO_HOME/

	# TODO: $SDECFG_CC?
	cat <<EOT > $CARGO_HOME/config.toml
[target.${arch_target}] # /-t2-/-unknown-
	#cc = "${archprefix}cc"
	#cxx = "${archprefix}c++"
	#ar = "${archprefix}ar"
	#ranlib = "${archprefix}ranlib"
	linker = "$CC"
EOT
}

rustc_prepatch() {
    # we need some hotfixes pre-patched
    patchfiles=$confdir/*.prepatch apply_patchfiles

    # add all t2 extra rustc targets
    for a in "${!rust_t2_targets[@]}"; do
	local b=${rust_t2_targets[$a]}
	local _a=${a//-/_}
	local _b=${b//-/_}

	cp compiler/rustc_target/src/spec/targets/{$_b,$_a}.rs
    done
    rust_update_arch_target compiler/rustc_target/src/spec/mod.rs \
	vendor/*/no_atomic*.rs vendor/cc*/src/lib.rs
}
hook_add prepatch 5 rustc_prepatch

rustc_preconf() {
	# -t2- default target
	local orig_target="${rust_target/-t2-/-unknown-}"

	# hotfix musl targets to not static link by default, TODO: review when upstream review
	sed -i /crt_static_default.*true/d compiler/rustc_target/src/spec/targets/*linux*rs

	# llvm_target and .vendor
	sed 's/-unknown-/-t2-/; s/options:.*TargetOptions *{/&\nvendor: "t2".into(),/' \
		compiler/rustc_target/src/spec/targets/${orig_target//-/_}.rs > \
		compiler/rustc_target/src/spec/targets/${rust_target//-/_}.rs

	cargo_clear_cksum vendor/*/.cargo-checksum.json
}
hook_add preconf 5 rustc_preconf

# AArch64 AMDGPU ARM BPF Hexagon Lanai Mips MSP430 NVPTX PowerPC RISCV Sparc SystemZ WebAssembly X86 XCore
# keep in sync w/ llvm!;-)
targets="WebAssembly"
case $arch in
	arm) var_insert targets ';' 'ARM' ;;
	arm64) var_insert targets ';' 'AArch64' ;;
	mips*) var_insert targets ';' 'Mips' ;;
	sparc*) var_insert targets ';' 'Sparc' ;;
	powerpc*) var_insert targets ';' 'PowerPC' ;;
	riscv*) var_insert targets ';' 'RISCV' ;;
	x86*|*) var_insert targets ';' 'X86' ;;
esac

rustc_config() {
    sed "s@^\[target\..*${rust_target}.*\]@&\n\
	llvm-config = \"$(which llvm-config)\"@" -i bootstrap.toml
}

rustc_config_cross() {
    sed "s@^\[target\..*${rust_target}.*\]@&\n\
	cc = \"${archprefix}cc\"\n\
	cxx = \"${archprefix}c++\"\n\
	ar = \"${archprefix}ar\"\n\
	ranlib = \"${archprefix}ranlib\"\n\
	linker = \"${archprefix}cc\"\n\
	llvm-config = \"$sysroot/TOOLCHAIN/cross/bin/llvm-config-x\"@;
	s,^#*\(targets =\) .*,\1 \"$targets\"," -i bootstrap.toml

    if [ $SDECFG_LIBC == "musl" ]; then
	# TODO: pkgprefix libdir musl? then
	sed "s@^\[target\..*${rust_target}.*\]@&\n\
	crt-static = false\n\
	musl-root = \"$root/usr\"@" -i bootstrap.toml
    fi
}

[ $stagelevel -eq 1 ] &&
	var_append confopt ' ' "--prefix=$sysroot/TOOLCHAIN/$toolsdir" ||
	var_append confopt ' ' "--prefix=$root/$prefix --libdir=$root$libdir"

rust_host=$(rustc -vV 2>/dev/null | sed -n 's/host: \(.*\)/\1/p')
rust_version=$(rustc -vV 2>/dev/null | sed -n 's/release: \(.*\)/\1/p')

# can we use the local rustc?
[ "$rust_host" = "$rust_target" -a $stagelevel -le 1 ] && rust_version=

[ "$rust_version" != "$ver" ] &&
case "$rust_version" in
    1.8[678].*)
	: ;;
    *)
	rust_version= ;;
esac

export BOOTSTRAP_SKIP_TARGET_SANITY=1
if [ "$rust_version" ]; then
	var_append confopt ' ' --enable-local-rust
else
	echo_warning "No compatible rustc, Rust will download binaries to bootstrap"
fi

var_append confopt ' ' --release-channel=stable
var_append confopt ' ' "--disable-codegen-tests" # needs llvm's FileCheck
var_append confopt ' ' --disable-docs
var_append confopt ' ' --enable-vendor
var_append confopt ' ' "--disable-clang --disable-lld --disable-llvm-bitcode-linker"
var_append confopt ' ' "--tools=" # "cargo", "rls", "clippy", "rustfmt", "analysis", src

if [ $stagelevel -eq 1 ]; then
    var_append confopt ' ' "--target=${rust_target},${arch_build}" # -t2-,-unknown-
else
    var_append confopt ' ' --target=${rust_target}
fi

if atstage native; then
    var_append confopt ' ' "--llvm-config=$(which llvm-config) --host=${rust_target}" # -t2-
    hook_add premake 5 "rustc_config"
else
    var_append confopt ' ' --llvm-config=$sysroot/TOOLCHAIN/cross/bin/llvm-config
    var_append confopt ' ' "--build=${arch_build}" # -unknown-
    hook_add premake 5 "rustc_config_cross"

    # rustc specific pseudo toolchain
    if [ $stagelevel -eq 1 ]; then
	var_append confopt ' ' "--host=${arch_build}" # -unknown-
	confopt="${confopt/--tools=/--tools=cargo}" # TODO: fix to work again?

	hook_add postmake 5 "cargo_config"
    else
	var_append confopt ' ' "--host=${rust_target}" # -t2-
    fi
fi

[ "$SDECFG_DEFAULT_CC" = clang -a $stagelevel -gt 1 ] &&
	var_append GCC_WRAPPER_APPEND ' ' -c?:-fuse-ld=lld

[ $stagelevel = 2 ] &&
    hook_add premake 5 'var_append SYSCC_WRAPPER_APPEND ' ' "-c?:-Wl,-rpath,$PWD/build/$rust_host/stage1/${libdir##*/}"'
atstage native &&
    hook_add premake 5 'var_append GCC_WRAPPER_APPEND ' ' "-c?:-Wl,-rpath,$PWD/build/${rust_target/-t2-/-unknown-}/stage1/${libdir##*/}"'
hook_add inmake 5 "./x.py build"
hook_add postmake 5 "./x.py install"

# hotfix armv6 linking /srv/t2/build/armv6-25.4-generic-arm-gnueabi-armv6-cross-linux/TOOLCHAIN/cross/lib/libz.so
var_append GCC_WRAPPER_FILTER '|' "sed s,$sysroot/TOOLCHAIN/cross/lib,$root/$libdir,"