Re: [Libguestfs] [PATCH nbdkit 1/9] server: Add libnbdkit.so.

In any case if we did the above we'd still have to hack every plugin and filter so that it links to the import library. But there's a lower-level technique we could use instead: https://nachtimwald.com/2012/07/15/calling-functions-in-exe-from-plugins-... https://stackoverflow.com/questions/770344/visual-c-linking-plugin-dll-ag... This is to use GetProcAddress from the plugin (DLL) to get the address of symbols in nbdkit.exe. It works a bit like dlsym. I hacked together a test plugin to try this: static void load (void) { int (*_nbdkit_parse_int) (const char *what, const char *str, int *r) = GetProcAddress (GetModuleHandle (NULL), "nbdkit_parse_int"); fprintf (stderr, "nbdkit_parse_int addr = %p\n", _nbdkit_parse_int); void (*_nbdkit_debug) (const char *msg, ...) = GetProcAddress (GetModuleHandle (NULL), "nbdkit_debug"); _nbdkit_debug ("calling nbdkit_debug now ..."); } and on loading this plugin into server/nbdkit.exe: nbdkit_parse_int addr = 000000000040BD40 nbdkit: debug: calling nbdkit_debug now ... So it really does work. I'm not quite sure exactly how to integrate this. Perhaps adding some Windows-only code to plugin_init which does the appropriate GetProcAddress calls, initializing some function pointers in the plugin?