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From: Csaba Raduly <rcsaba@gmail.com>
To: cygwin list <cygwin@cygwin.com>
Subject: Re: Building cpan module that links with proprietary libs
Date: Fri, 30 May 2014 11:27:00 -0000	[thread overview]
Message-ID: <CAEhDDbBjpJ0nPQ2cT5dEe4ZcR+XnASjj7FYbZ1iKJ4xqcTWWJg@mail.gmail.com> (raw)
In-Reply-To: <lm8qrq$nm3$1@ger.gmane.org>

On Fri, May 30, 2014 at 4:36 AM, Andrew DeFaria  wrote:
> On 5/29/2014 6:42 PM, Larry Hall (Cygwin) wrote:
>> As a
>> result, you will never get code compiled with g++ to link with these
>> libraries.  There is no common ABI among C++ compilers.  Thus, the
>> libraries
>> and headers of one can't be used as input to the compiler of another, even
>> on the same platform.  This only works for C code.  So you have to either
>> build the proprietary libs with Cygwin's C++ compiler or write your own
>> "shim" library that wraps the necessary calls and objects in a C API,
>> compile that with VS, and link your program against the APIs in your
>> library.

@Larry: Would this work? I think MSVC produces obj and lib files in
COFF; can Cygwin's toolchain understand that?

>
> Being as this code is proprietary I doubt that Perforce will release it to
> me to compile but I will point them at this thread...'

Maybe you can convince them to build a Cygwin version (not very likely).

Csaba
-- 
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Life is complex, with real and imaginary parts.
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  reply	other threads:[~2014-05-30  8:01 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-29  4:25 Andrew DeFaria
2014-05-29  8:58 ` Csaba Raduly
2014-05-29 20:34   ` Andrew DeFaria
2014-05-30  6:49     ` Larry Hall (Cygwin)
2014-05-30  8:01       ` Andrew DeFaria
2014-05-30 11:27         ` Csaba Raduly [this message]
2014-05-30 17:40           ` Larry Hall (Cygwin)
2014-05-30 22:06           ` Andrew DeFaria
2014-05-30 16:47         ` Larry Hall (Cygwin)

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