[Mingw-users] calling convention: create suitable lib with dlltool

[Fe K. <f.k...@gm...>]

Hi,

I'd be happy for any hint if and maybe how I could create a suitable lib for
a dll I have to use. Here are the settings and what I tried so far:


(a) With "dumpbin multicam.dll /exports" I got a list of all 74 functions:

ordinal hint RVA      name
1       0    000066E0 ?McOpenDriverMaintenance@@YGHXZ
2       1    ...      ?_McOpenDriverMaintenance@@YGHXZ
3       2    ...      _AlphaSelfTest@16
..
13      C    ...      _McCreate@8
..
61      3C   ...      __McOpenDriver@4
..
74

Note (don't know if this is significant): The first 2 entrys start with "?",
then some functions start with 1 underscore, finally there are functions
with 2 underscores.


(b) There was a def file provided:

IMPORTS
	McOpenDriver=MULTICAM._McOpenDriver@4
	McCloseDriver=MULTICAM._McCloseDriver@0
	McCreate=MULTICAM._McCreate@8
..


(c) There was a lib-file provided which of course did *not* work for me. The
error message right when my program starts: Can't find entry point for
function "McOpenDriver".



Here is what I tried:

(a) Changed "IMPORTS" to "EXPORTS" in the provided def file, inserted
"LIBRARY multicam.dll".

(b) Used dlltool in msys like this (tried also combinitions of -U and -k)
dlltool.exe -l name_of_new_lib -D name_of_existing_dll -d def_file_to_read
[-U] [-k]

(c) compiled and linked again against the new lib

(d) program starts with same error: can't find entry for function
McOpenDriver.


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