+%llvmgccdir% { return handleSubstitution(LLVMGCCDIR_SUBST); }
+%llvmgccarch% { return handleSubstitution(LLVMGCCARCH_SUBST); }
+%llvmgcc% { return handleSubstitution(LLVMGCC_SUBST); }
+%llvmgxx% { return handleSubstitution(LLVMGXX_SUBST); }
+%llvmcc1% { return handleSubstitution(LLVMCC1_SUBST); }
+%llvmcc1plus% { return handleSubstitution(LLVMCC1PLUS_SUBST); }