diff --git a/GNUmakefile b/GNUmakefile
index bbbfe19e..b57345f6 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -282,6 +282,20 @@ CXXFLAGS += -DCRYPTOPP_INCLUDE_VECTOR_CC
 endif # SUN_CC10_BUGGY
 endif # SUN_COMPILER
 
+#################################################################
+# Public service announcement
+
+# Do not warn for some targets
+NO_WARN = GNUmakefile.deps dist install install-strip uninstall remove clean distclean
+ifeq ($(findstring $(MAKECMDGOALS),$(NO_WARN)),)
+
+UNALIGNED_ACCESS = $(shell $(EGREP) -c "^// \#define CRYPTOPP_NO_UNALIGNED_DATA_ACCESS" config.h)
+ifneq ($(UNALIGNED_ACCESS),0)
+$(info WARNING: CRYPTOPP_NO_UNALIGNED_DATA_ACCESS is not defined in config.h)
+endif
+
+endif # NO_WARN
+
 #################################################################
 # Compiler diagnostics and warnings
 
@@ -298,6 +312,11 @@ ifneq ($(CLANG_COMPILER),0)
 CXXFLAGS += -Wall -Wextra -Wno-tautological-compare
 endif
 
+# -Wcast-align if not UNALIGNED_ACCESS
+ifeq ($(UNALIGNED_ACCESS),0)
+# CXXFLAGS += -Wcast-align
+endif
+
 ifeq ($(findstring -pipe,$(CXXFLAGS)),)
 CXXFLAGS += -pipe
 endif
@@ -331,20 +350,6 @@ LIBIMPORTOBJS = $(LIBOBJS:.o=.import.o)
 TESTIMPORTOBJS = $(TESTOBJS:.o=.import.o)
 DLLTESTOBJS = dlltest.dllonly.o
 
-#################################################################
-# Public service announcement
-
-# Do not warn for some targets
-NO_WARN = GNUmakefile.deps dist install install-strip uninstall remove clean distclean
-ifeq ($(findstring $(MAKECMDGOALS),$(NO_WARN)),)
-
-UNALIGNED_ACCESS = $(shell $(EGREP) -c "^// \#define CRYPTOPP_NO_UNALIGNED_DATA_ACCESS" config.h)
-ifneq ($(UNALIGNED_ACCESS),0)
-$(info WARNING: CRYPTOPP_NO_UNALIGNED_DATA_ACCESS is not defined in config.h)
-endif
-
-endif # NO_WARN
-
 #################################################################
 # Recipes