widl: Generate proxy/client/server files when requested explicitly even if they are empty.

tools/widl/client.c

@@ -432,7 +432,7 @@ void write_client(ifref_t *ifaces)
 
     if (!do_client)
         return;
-    if (!iface)
+    if (do_everything && !ifaces)
         return;
     END_OF_LIST(iface);
 

tools/widl/proxy.c

@@ -999,12 +999,12 @@ void write_proxies(ifref_t *ifaces)
   int c;
 
   if (!do_proxies) return;
-  if (!lcur) return;
-  END_OF_LIST(lcur);
+  if (do_everything && !ifaces) return;
 
   init_proxy(ifaces);
   if(!proxy) return;
 
+  END_OF_LIST(lcur);
   cur = lcur;
   while (cur) {
     if (is_object(cur->iface->attrs) && !is_local(cur->iface->attrs))
@@ -1012,8 +1012,6 @@ void write_proxies(ifref_t *ifaces)
     cur = PREV_LINK(cur);
   }
 
-  if (!proxy) return;
-
   write_stubdesc();
 
   print_proxy( "#if !defined(__RPC_WIN32__)\n");

tools/widl/server.c

@@ -572,7 +572,7 @@ void write_server(ifref_t *ifaces)
 
     if (!do_server)
         return;
-    if (!ifaces)
+    if (do_everything && !ifaces)
         return;
     END_OF_LIST(iface);
 

tools/widl/widl.c

@@ -87,7 +87,7 @@ int debuglevel = DEBUGLEVEL_NONE;
 int parser_debug, yy_flex_debug;
 
 int pedantic = 0;
-static int do_everything = 1;
+int do_everything = 1;
 int preprocess_only = 0;
 int do_header = 0;
 int do_typelib = 0;

tools/widl/widl.h

@@ -36,6 +36,7 @@ extern int debuglevel;
 
 extern int win32;
 extern int pedantic;
+extern int do_everything;
 extern int do_header;
 extern int do_typelib;
 extern int do_proxies;