Allow to build vs nacl instead of libsodium

By default libsodium is used. Only if --enable-nacl is specified, then
nacl will be used instead of libsodium.

Pass locations of nacl headers and libraries by using the following
options:

--with-nacl-headers=/home/me/somewhere/nacl-20110221/build/469/include/amd64/
--with-nacl-libs=/home/me/somewhere/nacl-20110221/build/469/lib/amd64/

1 files changed, 4 insertions, 0 deletions

diff --git a/toxcore/net_crypto.c b/toxcore/net_crypto.c
index b20917cf..a182bb53 100644
--- a/toxcore/net_crypto.c
+++ b/toxcore/net_crypto.c
@@ -24,6 +24,10 @@
  *
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include "net_crypto.h"
 
 #define CONN_NO_CONNECTION 0