FWIW here is the readme describing how to build libraries for Windows: https://github.com/racket/racket/tree/master/racket/src/native-libs
Den tir. 12. feb. 2019 kl. 17.37 skrev George Neuner <gneun...@comcast.net>: > Hi Philip, > > On 2/12/2019 1:18 AM, Philip McGrath wrote: > > I'm encountering an issue using `ffi-lib` to load a DLL on Windows. The > problem appears to be specific to Racket, as I seem to be able to load the > same DLL from Python. > > Specifically, I'm trying to build platform-specific packages for libgit2. > I can build the library and run its test suite successfully, but when I try > to load the DLL with `ffi-lib`, using an absolute path to avoid any search > issues, it fails with the message "%1 is not a valid Win32 application.; > errid=193". The AppVeyor build log is here > <https://ci.appveyor.com/project/philipmcgrath/native-libgit2-pkgs/build/job/urfo34x53oh0fr4l>, > and this is the Racket script > <https://github.com/LiberalArtist/native-libgit2-pkgs/blob/linker-errors/tmp-w64-test.rkt> > that fails to load the DLL. As I mentioned, I can load the DLL successfully > with this Python script > <https://github.com/LiberalArtist/native-libgit2-pkgs/blob/linker-errors/py-w64-test-tmp.py> > . > > I'm not much of a Windows person, and I'm not sure what else to do to > debug this. > > > If it isn't a simple 32-bit/64-bit mismatch, then it could be a lot of > things. :-( > > Unlike *nix, Windows supports several different kinds of DLLs. If the > wrong setting are used to compile or link, a Windows DLL can behave very > oddly ... including working in one context (Python), but not in another > (Racket). > > You say you built the library from source? I briefly looked at the > source, but I'm not very familiar with cmake, and I don't see where the > compile and link options are being defined. Which compiler did you use and > with what settings? > [If they are defined in the project somewhere, you can just point me to > the file(s).] > > George > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- -- Jens Axel Søgaard -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
