Re: [Mingw-users] Linking with Win32 DLLs under Linux question

[<dan...@ya...>]

 --- Mumit Khan <khan@NanoTech.Wisc.EDU> wrote: > On Thu, 28 Jun 2001,
Rob Light wrote:
> 
> > Here's my question: How do I get the linker to output a Win32 EXE
> which
> > dynamically links at run-time (under Windows) with a third party
> Win32
> > DLL?
> 
> Typical first step is to create an import library. Note that GNU
> linker
> is smart enough to directly link with the DLL, so you can just
> specify
> the DLL file directly on the command line. I'm more used to using an
> import library, so don't really know what the caveats are in linking
> directly to a DLL. 

Don't try linking directly with DLL if stdcall (PASCAL) names are only
visible as undecorated alias.  This includes most most of w32api. 
For example setupapi.dll exports a function SearchForInfFile.  To link
against this lib you need an implib with the stdcall decoration, ie,
SearchForInfFile@24.

Also some Pascal compilers use different name decoration (add _ to
start of external name. Here again you will need an implib.  

Danny


> MSVC as far as I know can't do that, and you have
> to
> have an import library.
> 
> Of course, I'm assuming that the 3rd party DLL is not C++, in which
> case
> it simply won't work.
> 
> > The linker is complaining about undefined references which are
> located
> > in the third party Win32 DLL.  Here are the commands:
> > 
> > i386-mingw32msvc-gcc -c -I/home/rlight/test/include -o test.o
> test.cpp
> > i386-mingw32msvc-gcc -c -I/home/rlight/test/include -o testmain.o
> > testmain.cpp
> > i386-mingw32msvc-gcc -mwindows -o test.exe test.o testmain.o
> 
> Add the DLL at the end of the command line.
> 
> Mumit
> 
> 
> 
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