Index: class.c
==================================================================
--- class.c
+++ class.c
@@ -637,10 +637,11 @@
     *tokenstr=0;
     macros[glohash[name].id-0xC000]=add_macro();
   }
 }
 
+#ifndef CONFIG_OMIT_INCLUDE
 static void begin_include_file(const char*name) {
   InputStack*nxt=inpstack;
   inpstack=malloc(sizeof(InputStack));
   if(!inpstack) fatal("Allocation failed\n");
   inpstack->classfp=classfp;
@@ -656,10 +657,11 @@
   } else {
     classfp=fopen(name,"r");
   }
   if(!classfp) ParseError("Cannot open include file \"%s\": %m\n",name);
 }
+#endif
 
 static void begin_macro(TokenList*mac) {
   MacroStack*ms=malloc(sizeof(MacroStack));
   TokenList**ap=0;
   int a=0;
@@ -1019,19 +1021,23 @@
           nxttok();
           if(!(tokent&TF_NAME) || tokenv!=OP_STRING) ParseError("String literal expected\n");
           define_macro(look_hash_mac(),1);
           goto again;
         case MAC_INCLUDE:
+#ifdef CONFIG_OMIT_INCLUDE
+          ParseError("The {include} macro has been omitted from this version\n");
+#else
           if(macstack) ParseError("Cannot use {include} inside of a macro\n");
           nxttok1();
           if(tokent==TF_MACRO && tokenv==1) ReturnToken(TF_EOF,0);
           if(!(tokent&TF_NAME) || tokenv!=OP_STRING) ParseError("String literal expected\n");
           n=look_hash_mac();
           nxttok1();
           if(tokent!=TF_MACRO+TF_CLOSE) ParseError("Too many macro arguments\n");
           begin_include_file(glohash[n].txt);
           goto again;
+#endif
         case MAC_CALL:
           nxttok();
           if(!(tokent&TF_NAME) || tokenv!=OP_STRING) ParseError("String literal expected\n");
           tokenv=look_hash_mac();
           goto call;

Index: comconfig.doc
==================================================================
--- comconfig.doc
+++ comconfig.doc
@@ -42,10 +42,13 @@
 
 CONFIG_NO_STATUS
   If defined, then most status output is omitted unless -v is specified.
   (Some status output, such as most error messages, are still displayed.)
 
+CONFIG_OMIT_INCLUDE
+  If defined, then the {include} macro is not implemented.
+
 CONFIG_OMIT_SOUND
   If defined, omit all sound capabilities (including music). (Even if it
   is not defined, it can still be disabled at runtime.)
 
 CONFIG_USING_32BIT_TIMESTAMPS