Do not use '#endif/#else xxx'; it is not allowed for ANSI C

lang/pc/comp/Makefile

@@ -2,4 +2,4 @@ distr:
 	echo '#ifndef	lint' > Version.c
 	echo 'char Version[] = "ACK Pascal compiler Version XXX";' | \
 		sed "s/XXX/`RC -i`/" >> Version.c
-	echo '#endif	lint' >> Version.c
+	echo '#endif' >> Version.c

lang/pc/comp/error.c

@@ -59,7 +59,7 @@ debug(va_alist)
 	}
 	va_end(ap);
 }
-#endif DEBUG
+#endif /* DEBUG */
 
 /*VARARGS*/
 error(va_alist)
@@ -220,7 +220,7 @@ _error(class, node, ap)
 		case VDEBUG:
 			remark = "(debug)";
 			break;
-#endif DEBUG
+#endif /* DEBUG */
 	}
 
 	/* the place */
@@ -235,7 +235,7 @@ _error(class, node, ap)
 		case FATAL:
 #ifdef DEBUG
 		case VDEBUG:
-#endif DEBUG
+#endif /* DEBUG */
 			ln = LineNumber;
 			break;
 	}
@@ -268,7 +268,7 @@ _error(class, node, ap)
 	}
 #ifdef DEBUG
 	}
-#endif DEBUG
+#endif /* DEBUG */
 
 	if( FileName ) fprint(ERROUT, "\"%s\", line %u: ", FileName, ln);
 

lang/pc/comp/main.c

@@ -101,7 +101,7 @@ Compile(src, dst)
 		LexScan();
 		return 0;	/* running the optimizer is not very useful */
 	}
-#endif DEBUG
+#endif /* DEBUG */
 	C_init(word_size, pointer_size);
 	if( !C_open(dst) )
 		fatal("couldn't open output file");
@@ -121,7 +121,7 @@ Compile(src, dst)
 	C_close();
 #ifdef DEBUG
 	if( options['I'] ) Info();
-#endif DEBUG
+#endif /* DEBUG */
 	return !err_occurred;
 }
 

lang/pc/comp/options.c

@@ -147,7 +147,7 @@ DoOption(text)
 				}
 		}
 		break;
-#endif NOCROSS
+#endif /* NOCROSS */
 	}
 	}
 }

lang/pc/comp/type.H

@@ -146,7 +146,7 @@ extern struct type
 #define	long_size	(SZ_LONG)
 #define	pointer_size	(SZ_POINTER)
 #define	real_size	(SZ_REAL)
-#else NOCROSS
+#else /* NOCROSS */
 extern int
 	word_align,
 	int_align,
@@ -161,7 +161,7 @@ extern arith
 	long_size,
 	pointer_size,
 	real_size;		/* All from type.c */
-#endif NOCROSS
+#endif /* NOCROSS */
 
 extern arith
 	align();

lang/pc/comp/type.c

@@ -33,7 +33,7 @@ arith
 	long_size	= SZ_LONG,
 	pointer_size	= SZ_POINTER,
 	real_size	= SZ_REAL;
-#endif NOCROSS
+#endif /* NOCROSS */
 
 extern arith	max_int;