Add support for toggleable warnings

include/asm/main.h

@@ -40,29 +40,6 @@ void opt_Push(void);
 void opt_Pop(void);
 void opt_Parse(char *s);
 
-/*
- * Used for errors that compromise the whole assembly process by affecting the
- * folliwing code, potencially making the assembler generate errors caused by
- * the first one and unrelated to the code that the assembler complains about.
- * It is also used when the assembler goes into an invalid state (for example,
- * when it fails to allocate memory).
- */
-noreturn_ void fatalerror(const char *fmt, ...);
-
-/*
- * Used for errors that make it impossible to assemble correctly, but don't
- * affect the following code. The code will fail to assemble but the user will
- * get a list of all errors at the end, making it easier to fix all of them at
- * once.
- */
-void yyerror(const char *fmt, ...);
-
-/*
- * Used to warn the user about problems that don't prevent the generation of
- * valid code.
- */
-void warning(const char *fmt, ...);
-
 #define YY_FATAL_ERROR fatalerror
 
 #ifdef YYLMAX