When building a very minimal OpenVPN for OpenWRT with
--disable-management among others,
the compilaton fails due to ENABLE_CLIENT_CR being defined, although
the management interface,
which makes use of it, has been disabled.
The attached simple patch checks for ENABLE_MANAGEMENT before defining
ENABLE_CLIENT_CR.--- a/syshead.h
+++ b/syshead.h
@@ -713,7 +713,9 @@
/*
* Do we support challenge/response authentication as client?
*/
+#if defined(ENABLE_MANAGEMENT)
#define ENABLE_CLIENT_CR
+#endif
/*
* Do we support pushing peer info?
