better fix for __bounded removal

configure.ac

@@ -8,14 +8,6 @@ m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 AC_SUBST([USER_CFLAGS], "-O2 $CFLAGS")
 CFLAGS="$CFLAGS -Wall -Werror -std=c99 -g -Wno-pointer-sign -DHAVE_CRYPTODEV -DLIBRESSL_INTERNAL"
 
-case $target_os in
-     *openbsd*)
-     ;;
-     *)
-     CFLAGS="$CFLAGS -D__bounded__(x,y,z)"
-     ;;
-esac
-
 case $target_os in
 	*darwin*)
 		TARGET_OS=darwin;
@@ -30,6 +22,9 @@ case $target_os in
 		CFLAGS="$CFLAGS -D__EXTENSIONS__ -D_XOPEN_SOURCE=600 -DBSD_COMP"
 		AC_SUBST([PLATFORM_LDADD], ['-lnsl -lsocket'])
 		;;
+	*openbsd*)
+		AC_DEFINE([HAVE_ATTRIBUTE__BOUNDED__], [1], [OpenBSD gcc has bounded])
+		;;
 	*) ;;
 esac
 

include/sys/types.h

@@ -10,4 +10,8 @@ typedef uint8_t u_int8_t;
 typedef uint32_t u_int32_t;
 #endif
 
+#if !defined(HAVE_ATTRIBUTE__BOUNDED__) && !defined(__bounded__)
+# define __bounded__(x, y, z)
+#endif
+
 #endif