build llvm and clang 16 statically

build.sh

#!/bin/sh
set -e

cmake -B build -G Ninja \
				-DCMAKE_BUILD_TYPE=MinSizeRel \
				-DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;lldb;lld;mlir" \
				-DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-unknown-linux-musl" \
				-DCMAKE_EXE_LINKER_FLAGS="-static" \
				-DLLVM_BUILD_STATIC=ON \
				-DLLVM_USE_LINKER=mold \
				-DLLVM_ENABLE_RUNTIMES="libc;libcxx;libcxxabi;libunwind;compiler-rt" \
				-DLIBCXXABI_USE_LLVM_UNWINDER=YES \
				-DLLVM_PARALLEL_LINK_JOBS=2 \
				-DLLVM_ENABLE_LIBXML2=OFF \
				-DLLVM_ENABLE_TERMINFO=OFF \
				-DCMAKE_C_COMPILER=clang \
				-DCMAKE_C_COMPILER_TARGET=x86_64-unknown-linux-musl \
				-DCMAKE_CXX_COMPILER=clang++ \
				-DCMAKE_CXX_COMPILER_TARGET=x86_64-unknown-linux-musl \
				-DCMAKE_CROSSCOMPILING=ON \
				-DCLANG_ENABLE_BOOTSTRAP=ON \
				-DBOOTSTRAP_CMAKE_BUILD_TYPE=Release \
				-DBOOTSTRAP_CLANG_DEFAULT_CXX_STDLIB=libc++ \
				-DBOOTSTRAP_CLANG_DEFAULT_RTLIB=compiler-rt \
				-DBOOTSTRAP_LIBCXX_USE_COMPILER_RT=YES \
    		-DBOOTSTRAP_LIBCXXABI_USE_COMPILER_RT=YES \
				-DCMAKE_INSTALL_PREFIX=$PWD/../llvm-install \
				-DBUILD_SHARED_LIBS=OFF \
				-DLLVM_ENABLE_ZLIB=OFF \
				-DLLVM_ENABLE_ASSERTIONS=ON \
				-DLIBCLANG_BUILD_STATIC=ON \
				-DLLDB_ENABLE_PYTHON=OFF \
				-DLLDB_ENABLE_CURSES=OFF \
				-DLLDB_ENABLE_LIBXML2=OFF \
				-DLLDB_ENABLE_LZMA=OFF \
				-DLLDB_ENABLE_LUA=OFF
mold -run ninja -C build
mold -run ninja -C build install/strip