# --- T2-COPYRIGHT-NOTE-BEGIN ---
# T2 SDE: package/*/wasi-compiler-rt/wasi-compiler-rt.conf
# Copyright (C) 2022 - 2024 The T2 SDE Project
# 
# This Copyright note is generated by scripts/Create-CopyPatch,
# more information can be found in the files COPYING and README.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2.
# --- T2-COPYRIGHT-NOTE-END ---

CC_WRAPPER_BYPASS=1

# TODO: sync w/ wasi-libc
[ $prefix_auto = 1 ] && prefix=opt/wasi && set_confopt

runmake=0

prepare_sources() {
	cd ..
	tar $taropt `match_source_file -p llvm-cmake-$ver`
	ln -svf cmake* cmake
}
hook_add preconf 5 prepare_sources

export CC=clang CXX=clang++ # LD=clang
export CFLAGS="-fno-exceptions --sysroot=$root/opt/wasi"
export CXXFLAGS="-fno-exceptions --sysroot=$root/opt/wasi"
export DESTDIR=$root

cmakeopt=
var_append cmakeopt " " "-DUNIX=ON \
-DCMAKE_TOOLCHAIN_FILE=$confdir/../wasi-libc/wasi-sdk.cmake \
-DCMAKE_C_COMPILER_WORKS=ON -DCMAKE_CXX_COMPILER_WORKS=ON \
-DCMAKE_STAGING_PREFIX=/opt/wasi"

var_append cmakeopt " " "-DCOMPILER_RT_BAREMETAL_BUILD=ON \
-DCOMPILER_RT_INCLUDE_TESTS=OFF \
-DCOMPILER_RT_HAS_FPIC_FLAG=OFF \
-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON \
-DCOMPILER_RT_OS_DIR=wasi"

build_compiler_rt() {
	eval cmake -B objs $cmakeopt compiler-rt-*/lib/builtins
	cmake --build objs
	cmake --install objs

	clangver=${ver%%.*}

	mkdir -p $root/usr/lib/clang/$clangver/lib/wasi/
	cp -arv $root/$prefix/lib/wasi/libclang_rt.builtins-wasm32.a $root/usr/lib/clang/$clangver/lib/wasi/

	if ! atstage native; then
		mkdir -p $root/TOOLCHAIN/cross/lib/clang/$clangver/lib/wasi/
		cp -arv $root/$prefix/lib/wasi/libclang_rt.builtins-wasm32.a \
		$root/TOOLCHAIN/cross/lib/clang/$clangver/lib/wasi/
	fi
}
hook_add inmake 5 build_compiler_rt