o("llvm-assertions", "llvm.assertions", "build LLVM with assertions")
o("llvm-plugins", "llvm.plugins", "build LLVM with plugin interface")
o("debug-assertions", "rust.debug-assertions", "build with debugging assertions")
+o("overflow-checks", "rust.overflow-checks", "build with overflow checks")
o("llvm-release-debuginfo", "llvm.release-debuginfo", "build LLVM with debugger metadata")
v("debuginfo-level", "rust.debuginfo-level", "debuginfo level for Rust code")
v("debuginfo-level-rustc", "rust.debuginfo-level-rustc", "debuginfo level for the compiler")