ImportError: DLL load failed: The specified module could notbe found, SWIG, life, etc
in [Python]
|
Prev: black console window of executing os.chmod() and os.access()
Next: throwing exceptions from csv.DictReader or even csv.reader
From: Thomas Jollans on 5 Jul 2010 11:01 On 07/05/2010 04:35 PM, Bill Davy wrote: > I am struggling :-( smile! > > I have used SWIG to build a module called SHIP. So I have a directory > containing SHIP.py and _SHIP.pyd, as follows: > > [ ...] > > Python appears to find H:\Viper\HostPC\V1\SHIP\Release\_SHIP.pyd but for > some reason, which I cannot fathom, says "DLL load failed". > Maybe it doesn't mean _SHIP.pyd, but another DLL: maybe _SHIP.pyd depends on some other DLL? Since you used SWIG, I'm guessing that you're wrapping some other library. Maybe that's what it can't find. > > > Can anyone offer me any suggestion where I am going wrong or how to tackle > this problem? > > > > Could it be that the Python 2.6 I am running did not use the same compiler > (VC6) with which I buiult _SHIP.pyd and if so, is there a way round this > without moving on from VC6? > Shouldn't be a problem, as long as the calling convention hasn't change, which it hasn't. If you're on a 64-bit system there might be a problem there with Python and some DLLs being built for different architectures? Cheers, Thomas
From: Bill Davy on 5 Jul 2010 13:51
"Thomas Jollans" <thomas(a)jollans.com> wrote in message news:mailman.265.1278342154.1673.python-list(a)python.org... > On 07/05/2010 04:35 PM, Bill Davy wrote: >> I am struggling :-( > > smile! > >> >> I have used SWIG to build a module called SHIP. So I have a directory >> containing SHIP.py and _SHIP.pyd, as follows: >> >> [ ...] >> >> Python appears to find H:\Viper\HostPC\V1\SHIP\Release\_SHIP.pyd but for >> some reason, which I cannot fathom, says "DLL load failed". >> > > Maybe it doesn't mean _SHIP.pyd, but another DLL: maybe _SHIP.pyd > depends on some other DLL? Since you used SWIG, I'm guessing that you're > wrapping some other library. Maybe that's what it can't find. > Well, there's no mention of another librarary, and "import _SHIP" is the first (non-comment) statement in SHIP.py But when I run Dependency Walker against _SHIP.pyd it does say there's a missing DLL (WINUSB.DLL) so I suspect I've got to sort that out. >> >> >> Can anyone offer me any suggestion where I am going wrong or how to >> tackle >> this problem? >> >> >> >> Could it be that the Python 2.6 I am running did not use the same >> compiler >> (VC6) with which I buiult _SHIP.pyd and if so, is there a way round this >> without moving on from VC6? >> > > Shouldn't be a problem, as long as the calling convention hasn't change, > which it hasn't. If you're on a 64-bit system there might be a problem > there with Python and some DLLs being built for different architectures? Yep, all for the same architetcure. I suspect it's a dependency problem. Oh well. > > Cheers, > Thomas |