fix: hardcoding the shared lib name

Use `module_pathname` to fix this.

Author: steve-chavez

Makefile

@@ -70,7 +70,7 @@ $(BUILD_DIR)/$(EXTENSION).$(SHARED_EXT): $(EXTENSION).$(SHARED_EXT)
 sql/$(EXTENSION)--$(EXTVERSION).sql: sql/$(EXTENSION).sql
 	cp $< $@
 
-$(EXTENSION).control:
+$(EXTENSION).control: $(EXTENSION).control.in
 	sed "s/@EXTVERSION@/$(EXTVERSION)/g" $(EXTENSION).control.in > $@
 
 PGXS := $(shell $(PG_CONFIG) --pgxs)

pg_net.control.in

@@ -1,3 +1,4 @@
 comment = 'Async HTTP'
 default_version = '@EXTVERSION@'
 relocatable = false
+module_pathname = '$libdir/pg_net'

sql/pg_net.sql

@@ -80,31 +80,31 @@ create or replace function net._urlencode_string(string varchar)
     returns text
     language 'c'
     immutable
-as 'pg_net';
+as 'MODULE_PATHNAME';
 
 -- API: Private
 create or replace function net._encode_url_with_params_array(url text, params_array text[])
     -- url encoded string
     returns text
     language 'c'
     immutable
-as 'pg_net';
+as 'MODULE_PATHNAME';
 
 create or replace function net.worker_restart()
   returns bool
   language 'c'
-as 'pg_net';
+as 'MODULE_PATHNAME';
 
 create or replace function net.wait_until_running()
   returns void
   language 'c'
-as 'pg_net';
+as 'MODULE_PATHNAME';
 comment on function net.wait_until_running() is 'waits until the worker is running';
 
 create or replace function net.wake()
   returns void
   language 'c'
-as 'pg_net';
+as 'MODULE_PATHNAME';
 
 -- Interface to make an async request
 -- API: Public