At Tue, 26 Aug 2014 16:48:24 +0200, Jens Axel Søgaard wrote: > 2014-08-26 1:46 GMT+02:00 Matthew Flatt <[email protected]>: > > At Mon, 25 Aug 2014 18:50:24 +0200, Jens Axel Søgaard wrote: > >> > The "@loader_path" references mean that the shared libraries as > >> > currently compiled work only when installed in the same scope as the > >> > `racket/draw` libraries. Offhand, I don't have a good idea for solving > >> > this problem. (FWIW, Windows installations won't have this problem.) > > > > I've changed `raco setup` to replace "@loader_path" in installed Mach-O > > files with an absolute path as needed. > > Sounds great. > > I have a similar problem on Windows 7 Enterprise SP1. > > The dynamic library is copied into the result of (find-user-lib-dir) > namely c:\Users\js\AppData\Roaming\Racket\6.1\lib > > The odd thing is that (ffi-lib "libpoppler-glib" '("8")) looks > for "libpoppler-glib.dll.8" instead of "libpoppler-glib-8.dll". > > Should I just rename the file or is it a bug?
I think the way that version numbers are currently added to Windows DLL names is probably not useful, and I will look into adjusting that. Meanwhile, you could use `ffi-lib` on a different library name for Windows, which is how `racket/draw`, etc., currently work. Another detail for Windows is that you need to explicitly load a DLL X is that referenced by a DLL Y before loading Y. That's the flip side of not having to worry about something like "@loader_path": instead of a static reference to another library embedded in the DLL, the "path" is determined dynamically by loading a shared library before it is needed. That load-before-reference issue is partly why you see a list of DLLs at https://github.com/plt/racket/blob/master/pkgs/draw-pkgs/draw-lib/racket/draw/unsafe/cairo-lib.rkt Another reason for the list of libraries there (and why it shows up for Mac OS X, too) is to ensure that shared libraries are pulled along for stand-alone executables. The `define-runtime-lib` macro expands to `define-runtime-path-list` as well as `ffi-lib`. ____________________ Racket Users list: http://lists.racket-lang.org/users
