-extern unsigned char CreateDep; /* Create a dependency file */
-extern unsigned char CheckStack; /* Generate stack overflow checks */
+extern unsigned char PreprocessOnly; /* Just preprocess the input */
+extern unsigned RegisterSpace; /* Space available for register vars */
+
+/* Stackable options */
+extern IntStack WritableStrings; /* Literal strings are r/w */
+extern IntStack LocalStrings; /* Emit string literals immediately */
+extern IntStack InlineStdFuncs; /* Inline some known functions */
+extern IntStack EnableRegVars; /* Enable register variables */
+extern IntStack AllowRegVarAddr; /* Allow taking addresses of register vars */
+extern IntStack RegVarsToCallStack; /* Save reg variables on call stack */
+extern IntStack StaticLocals; /* Make local variables static */
+extern IntStack SignedChars; /* Make characters signed by default */
+extern IntStack CheckStack; /* Generate stack overflow checks */
+extern IntStack Optimize; /* Optimize flag */
+extern IntStack CodeSizeFactor; /* Size factor for generated code */
+extern IntStack DataAlignment; /* Alignment for data */
+
+/* File names */
+extern StrBuf DepName; /* Name of dependencies file */
+extern StrBuf FullDepName; /* Name of full dependencies file */
+extern StrBuf DepTarget; /* Name of dependency target */