Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.com Message-ID: <20010507110332.22447.qmail@web6404.mail.yahoo.com> Date: Mon, 7 May 2001 21:03:32 +1000 (EST) From: =?iso-8859-1?q?Danny=20Smith?= Subject: RE: Using setupapi.lib/h/dll from cygwin To: Svein Erling Seldal , "Larry Hall \(RFK Partners, Inc\)" , cygwin@cygwin.com In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit --- Svein Erling Seldal wrote: > > > From: Larry Hall (RFK Partners, Inc) [mailto:lhall@rfk.com] > > > > At 06:56 PM 5/5/2001, Svein Erling Seldal wrote: > > >Well, how is this done? > > > > > >If I use: 'gcc -o foo foo.o' > > >Returns: foo.o(.text+0x1b):foo.c: undefined reference to > > >`_imp__SetupDiGetClassDevsA@16' > > > > > >If I use: 'gcc -o foo foo.o setupapi.lib' > > >Returns the same > > > > > > OK, what does the symbol in setupapi.lib look like? What you did should > > work if the symbol is in the library and matches the reference exactly. > > OK. I get your point: > > My app requires "SetupDiGetClassDevs()". When compiled, it generates a > reference to "SetupDiGetClassDevsA@16" *or* "_imp__SetupDiGetClassDevsA@16" > (depending on wheter og not I edit the original MS setupapi.h file, where I > remove the #define WINSETUPAPI DECLSPEC_IMPORT setting or not). > > Now, the MS provided setupapi.lib, however, defines these symbols as: > "_SetupDiGetClassDevsA" and its imported reference as > "__imp__SetupDiGetClassDevsA". That's why it isnt working. > Are you sure about that? That's what nm says but I think gcc nm (&ld) is misreading the implib MS PSDK dumpbin shows the stdcall decoration. setapi.dll is a strange one in that it can use a remote drive or a removeable drive for swap file storage - this is in the dll image header. Maybe the MS implib is a bit strange as well. > So the fix to this problem is either: 1) I need to generate a libsetupapi.a > which uses the GNU naming method somehow. Or 2) tell the GNU compiler not to > use the '@16' postfix-scheme on this specific library/dll. Correct? > To fix the problem, you need a def file and then rebuild the implib as per the rest of the w32api implibs. A submission to w32api maintainer will be in the pipe tomorrow. > Regards, > Svein Erling Seldal > > > -- > Want to unsubscribe from this list? > Check out: http://cygwin.com/ml/#unsubscribe-simple > _____________________________________________________________________________ http://store.yahoo.com.au - Yahoo! Store - It's time you had your business online! -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple