Unify GVL wrappers to missing libpq functions

To avoid overly complicated or duplicated definitions.

Author: larskanis

ext/gvl_wrappers.c

@@ -19,6 +19,9 @@ PostgresPollingStatusType PQcancelPoll(PGcancelConn *cancelConn){return PGRES_PO
 #ifndef LIBPQ_HAS_PIPELINING
 int PQpipelineSync(PGconn *conn){return 0;}
 #endif
+#ifndef LIBPQ_HAS_PROMPT_OAUTH_DEVICE
+int auth_data_hook_proxy(PGauthData type, PGconn *conn, void *data){return 0;}
+#endif
 
 #ifdef ENABLE_GVL_UNLOCK
 FOR_EACH_BLOCKING_FUNCTION( DEFINE_GVL_WRAPPER_STRUCT );

ext/gvl_wrappers.h

@@ -24,6 +24,9 @@
 #ifndef LIBPQ_HAS_CHUNK_MODE
 typedef struct pg_cancel_conn PGcancelConn;
 #endif
+#ifndef LIBPQ_HAS_PROMPT_OAUTH_DEVICE
+typedef enum { DUMMY_TYPE } PGauthData;
+#endif
 
 #define DEFINE_PARAM_LIST1(type, name) \
 	name,
@@ -291,23 +294,12 @@ FOR_EACH_BLOCKING_FUNCTION( DEFINE_GVL_STUB_DECL );
 #define FOR_EACH_PARAM_OF_notice_receiver_proxy(param) \
 	param(void *, arg)
 
-#ifdef LIBPQ_HAS_PROMPT_OAUTH_DEVICE
-
 /* function( name, void_or_nonvoid, returntype, lastparamtype, lastparamname ) */
 #define FOR_EACH_CALLBACK_FUNCTION(function) \
 	function(auth_data_hook_proxy, GVL_TYPE_NONVOID, int, void *, data) \
 	function(notice_processor_proxy, GVL_TYPE_VOID, void, const char *, message) \
 	function(notice_receiver_proxy, GVL_TYPE_VOID, void, const PGresult *, result) \
 
-#else
-
-/* function( name, void_or_nonvoid, returntype, lastparamtype, lastparamname ) */
-#define FOR_EACH_CALLBACK_FUNCTION(function) \
-	function(notice_processor_proxy, GVL_TYPE_VOID, void, const char *, message) \
-	function(notice_receiver_proxy, GVL_TYPE_VOID, void, const PGresult *, result) \
-
-#endif
-
 FOR_EACH_CALLBACK_FUNCTION( DEFINE_GVL_STUB_DECL );
 
 

ext/pg_auth_hooks.c

@@ -6,7 +6,7 @@
 
 #include "pg.h"
 
-#if LIBPQ_HAS_PROMPT_OAUTH_DEVICE
+#ifdef LIBPQ_HAS_PROMPT_OAUTH_DEVICE
 
 #ifdef TRUFFLERUBY
 static VALUE auth_data_hook;