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From: Brian Dessent <brian@dessent.net>
To: Seyran Avanesyan <seyran.avanesyan@tanner.com>
Cc: gcc-help@gcc.gnu.org
Subject: Re: extern "C" From command line
Date: Sat, 23 Aug 2008 02:37:00 -0000	[thread overview]
Message-ID: <48AF7666.E16B03F1@dessent.net> (raw)
In-Reply-To: <D66102A43110FC488698F1C3B605E93108F962A7@exchange01.tanner.com>

Seyran Avanesyan wrote:

> The functions are going to be exported from a Dll, which is going to be
> done using MinGW. Is that still requires that client of that Dll be
> compiled with MinGW?

If they have C++ linkage then they need to be called with a C++ compiler
with compatible ABI.  If you want to mix compilers with different C++
ABIs (such as gcc and MSVC) then you need to use C linkage.

> The problem is I need to MinGW compile a Dll as C++ not as C, and call
> exported functions from MSVC compiled application.

Then you need C linkage, which means you have no choice but to enclose
the code in "extern C" (or compile it with a C compiler of course.)  If
you really can't modify the source.cpp file then I still don't see why
you can't do something like:

extern "C" {
#include "source.cpp"
}

Brian

  reply	other threads:[~2008-08-23  2:31 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-19 16:12 Restricting symbol binding within shared object Arindam
2008-08-19 16:58 ` special comments handling in the C compiler Tim Wang
2008-08-22  1:52   ` extern "C" From command line Seyran Avanesyan
2008-08-22  2:12     ` Brian Dessent
2008-08-23  1:38       ` Seyran Avanesyan
2008-08-23  2:37         ` Brian Dessent [this message]
2008-08-23  2:46           ` Seyran Avanesyan
2008-08-22  2:04   ` 64-bit gcc Seyran Avanesyan
2008-08-22 11:01     ` Brian Dessent
2008-08-22 20:09       ` Seyran Avanesyan
2008-08-22 22:32         ` Brian Dessent
2008-08-22 22:45           ` Seyran Avanesyan
2008-08-23  2:31             ` Brian Dessent
2008-08-23  2:45               ` NightStrike
2008-08-23  2:49               ` Seyran Avanesyan
2008-08-23  3:18                 ` Brian Dessent
2008-08-23  2:00         ` NightStrike
2008-08-23  2:13           ` Seyran Avanesyan
2008-08-19 18:49 ` Restricting symbol binding within shared object Ian Lance Taylor
2008-08-20 19:36   ` Arindam
2008-08-21  4:43     ` Ian Lance Taylor

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