From: Simon Kuenzer <simon@unikraft.io>
Date: Sun, 4 Feb 2024 14:29:29 +0000 (+0100)
Subject: netdb: Prefer musl data types if available
X-Git-Tag: RELEASE-0.16.2~2
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=75453a60774246113b65b6dbb4e83a35bc894f5f;p=unikraft%2Flibs%2Flwip.git

netdb: Prefer musl data types if available

For better ABI compatibility and interopability, the data types that
are defined in `<lwip/netdb.h>` are replaced by the ones shipped with
the musl library (`<netdb.h>`) if available.

Signed-off-by: Simon Kuenzer <simon@unikraft.io>
Reviewed-by: Eduard Vintilă <eduard.vintila47@gmail.com>
Reviewed-by: Razvan Deaconescu <razvand@unikraft.io>
Approved-by: Razvan Deaconescu <razvand@unikraft.io>
GitHub-Closes: #48
---

diff --git a/include/lwipopts.h b/include/lwipopts.h
index a79d617..66c26f3 100644
--- a/include/lwipopts.h
+++ b/include/lwipopts.h
@@ -265,6 +265,15 @@ void sys_free(void *ptr);
 #define DNS_TABLE_SIZE CONFIG_LWIP_DNS_TABLE_SIZE
 #define DNS_LOCAL_HOST_LIST 1
 #define DNS_LOCAL_HOSTLIST_IS_DYNAMIC 1
+
+#if CONFIG_LIBMUSL_NETWORK
+/* lwip should not declare its own data types */
+#define LWIP_DNS_API_DECLARE_H_ERRNO  0
+#define LWIP_DNS_API_DEFINE_ERRORS    0
+#define LWIP_DNS_API_DEFINE_FLAGS     0
+#define LWIP_DNS_API_DECLARE_STRUCTS  0
+#include <netdb.h>
+#endif /* CONFIG_LIBMUSL_NETWORK */
 #endif /* LWIP_DNS */
 
 /**