add CUNKNOWN make variables to entry Makefiles

2000/dlowe/Makefile

@@ -40,9 +40,13 @@ include ../../var.mk
 #
 CSILENCE= -Wno-gnu-statement-expression -Wno-unused-parameter
 
+# Attempt to silence unknown warnings
+#
+CUNKNOWN= -Wno-unknown-warning-option
+
 # Common C compiler warning flags
 #
-CWARN= -Wall -Wextra -pedantic ${CSILENCE}
+CWARN= -Wall -Wextra ${CSILENCE} ${CUNKNOWN}
 
 # Compiler standard
 #
@@ -50,9 +54,6 @@ CSTD= -std=gnu99
 
 # Compiler bit architecture
 #
-# Some entries require 32-bitness: ARCH= -m32
-# Some entries require 64-bitness: ARCH= -m64
-#
 ARCH=
 
 # Defines that are needed to compile