[CC redirected to hugs-bugs, hugs-users shouldn't be seeing bug reports]
The error message is printed when a call to Win32's LoadLibrary call
returns NULL. This could indicate:
o That the dll was incorrectly linked, or corrupted during download.
You can check this using Win32 tools which show you information about
dll files. (I forget which ones, perhaps just the usual "Get Info"
menu item.)
o That the dll was built against a very different version of Hugs.
Very unlikely, the Hugs<->dll interface has been stable for a long time
and most changes would affect later stages in the code.
o That the dll was built against a different version of Win32 or TCL.
Possible - there's a number of versions of both out there. Win32
incompatabilities usually don't show up at load-time (Microsoft
seems to prefer runtime errors to load-time errors) but it could
happen. I have no experience of tcl.
If you built all your code from source (as opposed to downloading a binary
from somewhere), this isn't too likely.
o The the dll is not on the search path.
Shouldn't apply because we use an absolute pathname to load the library.
I doubt it's relevant but maybe the ".." in the pathname is causing
problems? You could test this by loading just
C:\FranTK\src\TclHaskellSrc\TclPrim.hs
I have limited access to Win32 boxes these days so I'm afraid I can't
do anything to check any of these - try 'em all, start with the easiest.
[I also can't comment on atwoodj's theory about DOS environment sizes
- I don't know Win95 well enough.]
Alastair
> Fritz K Ruehr wrote:
> >
> > During an installation and first test run of FranTk under Hugs
> > (latest release) within Win 95, my student and I encountered an
> > error message about importing a DLL file:
> >
> > -------
> >
> > ...
> > Reading file "C:\HUGS98\..\FranTK\src\TclHaskellSrc\TclPrim.hs":
> > Reading file "C:\HUGS98\lib\exts\Word.hs":
> > Reading file "C:\HUGS98\..\FranTK\src\TclHaskellSrc\TclPrim.hs":
> > Parsing
> > ERROR "C:\HUGS98\..\FranTK\src\TclHaskellSrc\TclPrim.hs": Error while importing
> > DLL "C:\FranTK\src\TclHaskellSrc\TclPrim.dll"
> >
> > -------
> >
> > Does anyone know what sorts of problems are likely to lead to this
> > message? More specifically, is this likely to be an internal problem
> > with the DLL file or a file access problem? There were some differences
> > in upper/lowercase between the filename and reference, but fixing this
> > did not fix the problem.
