Re: [Mingw-users] lesson: don't have a dll and a lib in the same library path

[Brandon Sneed <brandon@xxxxxxx>]

On Dec 20, 2007, at 5:58 PM, Greg Chicares wrote:

> On 2007-12-20 22:17Z, Brandon Sneed wrote:
>> This is just to document this in case anyone else runs into it...
>>
>> I had to make a library (.a) from a vendor DLL.  I copied the DLL  
>> to a
>> temp directory, created a def for it in the same directory and used
>> dlltool to create a library from said DLL.  i think tried to compile
>> and link with that library and LD generated errors for every function
>> in the DLL basically saying it couldn't find _SomeFunc@n x300 or so
>> imports.
>>
>> After 4 days of fighting with it, searching google (maybe with the
>> wrong search terms) etc. on a lark, i deleted the DLL and wala, it  
>> all
>> linked fine.
>>
>> So.. if this is you (person reading the archives), delete that DLL!!!
>
> What exactly were the dll and the import library named?
> AIUI, using a '.dll.a' suffix would give precedence to the
> import library, so you wouldn't need to delete the dll.
> See the link below.

the dll was "utpapi.dll" and the library was "libutpapi.a".

>
>
>> I had previously thought that while linking to DLL's was possible, it
>> required command line parameters other than "-l<library>".
>
> http://sourceware.org/binutils/docs-2.18/ld/WIN32.html#index-direct-linking-to-a-dll-610

thanks for the link.  I may have actually spoken too soon.  when i got  
around to actually running the built app, windows complains that  
"CloseController@4" was not found in UTPAPI.DLL.  so while that one  
issue was fixed, i have another to deal with i suppose.

the DLL exported it as just "CloseController".  My def file has  
"CloseController@4" in it.  I also tried several permutations of  
"CloseController=CloseController@4" and a few other combos which all  
either wouldn't link, or wouldn't run.  The functions are defined in  
the header as __stdcall which seems to be at the root of things.   
Surely there is some easy way around this.  I could've swore i had  
done this with other dll's many times before, but i'm just drawing a  
blank.  most likely because of frustration :(


Brandon Sneed

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