set _OPENBSD_SOURCE on NetBSD

diff --git a/configure b/configure
index f9c2754927c49ba7ddbb0058e8272f7f04375c84..7d9506237911408fac2d5a545fe56a0aa879feba 100755 (executable)
--- a/configure
+++ b/configure
@@ -125,6 +125,9 @@ case "$OS" in
                OS_CFLAGS="$OS_CFLAGS -D_DEFAULT_SOURCE -D_GNU_SOURCE"
                printf 'CURDIR   :=     .\n' >>$CONFIG_MK
                ;;
+       netbsd)
+               OS_CFLAGS="$OS_CFLAGS -D_OPENBSD_SOURCE"
+               ;;
 esac
 
 [ -n "$OS_CFLAGS" ] && \