add --enable-sanitize config option

Change-Id: I3be01e0682b479a71c545f718b68c441a1011b0f

configure.ac

@@ -91,6 +91,18 @@ AM_CONDITIONAL(HAVE_LIBCDK, test "$found_cdk" = yes)
 
 dnl Checks for typedefs, structures and compiler characteristics
 
+AC_ARG_ENABLE(sanitize,
+	[AS_HELP_STRING(
+		[--enable-sanitize],
+		[Compile with address sanitizer enabled],
+	)],
+	[sanitize=$enableval], [sanitize="no"])
+if test x"$sanitize" = x"yes"
+then
+	CFLAGS="$CFLAGS -fsanitize=address -fsanitize=undefined"
+	CPPFLAGS="$CPPFLAGS -fsanitize=address -fsanitize=undefined"
+fi
+
 # The following test is taken from WebKit's webkit.m4
 saved_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -fvisibility=hidden "