build: define _OPENBSD_SOURCE on NetBSD

diff --git a/m4/os.m4 b/m4/os.m4
index ccc669a72e78631c44fd996059253c41a8ebc430..21be3d86ed26ec61ca54e12882f6acee3a5c7a88 100644 (file)
--- a/m4/os.m4
+++ b/m4/os.m4
@@ -46,5 +46,8 @@ AC_DEFUN([lldp_CFLAGS_OS], [
        AX_CFLAGS_GCC_OPTION([-D_XOPEN_SOURCE=500], [LLDP_CPPFLAGS])      dnl HP-UX
        AX_CFLAGS_GCC_OPTION([-D_XOPEN_SOURCE_EXTENDED], [LLDP_CPPFLAGS]) dnl HP-UX
        ;;
+     netbsd*)
+       AX_CFLAGS_GCC_OPTION([-D_OPENBSD_SOURCE], [LLDP_CPPFLAGS]) dnl strtonum
+       ;;
   esac
 ])