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RE: DLL generation under Cygwin
- From: "Dave Korn" <dk at artimi dot com>
- To: "'Cygwin List'" <cygwin at cygwin dot com>
- Date: Wed, 5 May 2004 11:57:00 +0100
- Subject: RE: DLL generation under Cygwin
> -----Original Message-----
> From: cygwin-owner On Behalf Of Ted Yu
> Sent: 04 May 2004 20:23
> Hi, Larry:
> If I use your flag, I got the following:
> ld: warning: cannot find entry symbol fftEntry@12;
> defaulting to 10001000
> djbfft2d.o(.text+0x4d3):djbfft2d.cpp: undefined
> reference to `_imp___iob'
> djbfft2d.o(.text+0x50a):djbfft2d.cpp: undefined
> reference to `_imp___iob'
This looks to me like you only re-tried the link stage; you need to
rebuild all the .o files from scratch using -mno-cygwin as well, otherwise
they'll still have references to cygwin stuff.
> BTW, I have this function:
> int __stdcall fftEntry(HINSTANCE h, unsigned long a,
> void * b)
> Why is ld complaining that fftEntry@12 cannot be found ?
Because gcc uses a different name-mangling scheme to msvc.
Without knowing anything about your makefile or command line options, it's
a bit hard to give any more specific advice. However I highly recommend you
read the "Programming Questions" section of the cygwin faq at
http://cygwin.com/faq/faq_4.html#SEC88, and the "Programming with Cygwin"
section of the userguide at
http://cygwin.com/cygwin-ug-net/programming.html, both of which contain lots
of advice about building dlls under cygwin.
cheers,
DaveK
--
Can't think of a witty .sigline today....
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