add CUNKNOWN make variables to entry Makefiles

2013/endoh3/Makefile

@@ -40,11 +40,15 @@ include ../../var.mk
 #
 CSILENCE= -Wno-error -Wno-implicit-function-declaration -Wno-implicit-int \
 	  -Wno-main -Wno-deprecated-non-prototype -Wno-unused-parameter \
-	  -Wno-builtin-declaration-mismatch -Wno-unknown-warning-option
+	  -Wno-builtin-declaration-mismatch
+
+# Attempt to silence unknown warnings
+#
+CUNKNOWN= -Wno-unknown-warning-option
 
 # Common C compiler warning flags
 #
-CWARN= -Wall -Wextra ${CSILENCE}
+CWARN= -Wall -Wextra ${CSILENCE} ${CUNKNOWN}
 
 # Compiler standard
 #
@@ -52,9 +56,6 @@ CSTD= -std=gnu11
 
 # Compiler bit architecture
 #
-# Some entries require 32-bitness: ARCH= -m32
-# Some entries require 64-bitness: ARCH= -m64
-#
 ARCH=
 
 # Defines that are needed to compile
@@ -87,8 +88,7 @@ ifeq "$(findstring $(CLANG),${CC})" "$(CLANG)"
 #
 CSILENCE+= -Wno-comma -Wno-double-promotion -Wno-float-conversion \
 	   -Wno-implicit-float-conversion -Wno-missing-variable-declarations \
-	   -Wno-newline-eof -Wno-pedantic -Wno-poison-system-directories \
-	   -Wno-unknown-warning-option
+	   -Wno-newline-eof -Wno-pedantic -Wno-poison-system-directories
 #
 CWARN+= -Weverything
 #