add CUNKNOWN make variables to entry Makefiles

1995/cdua/Makefile

@@ -43,9 +43,13 @@ CSILENCE= -Wno-incompatible-library-redeclaration -Wno-main \
 	  -Wno-strict-prototypes -Wno-implicit-int -Wno-unused-parameter \
 	  -Wno-misleading-indentation
 
+# 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
 #
@@ -53,9 +57,6 @@ CSTD= -std=gnu90
 
 # Compiler bit architecture
 #
-# Some entries require 32-bitness: ARCH= -m32
-# Some entries require 64-bitness: ARCH= -m64
-#
 ARCH=
 
 # Variable to simplify reconfiguring sleep time for alternate code
@@ -92,8 +93,7 @@ ifeq "$(findstring $(CLANG),${CC})" "$(CLANG)"
 CSILENCE+= -Wno-comma -Wno-missing-variable-declarations \
 	   -Wno-poison-system-directories -Wno-strict-prototypes \
 	   -Wno-format-nonliteral -Wno-sign-conversion \
-	   -Wno-incompatible-function-pointer-types-strict -Wno-unsafe-buffer-usage \
-	   -Wno-unknown-warning-option
+	   -Wno-incompatible-function-pointer-types-strict -Wno-unsafe-buffer-usage
 #
 CWARN+= -Weverything
 #