Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
X-Injected-Via-Gmane:	http://gmane.org/
To:	cygwin AT cygwin DOT com
From:	Christian Neise <neise AT dc-systeme DOT de>
Subject:	Create dll using gcc
Date:	Tue, 02 Sep 2003 12:14:00 +0200
Lines:	65
Message-ID:	<1dq8lvg41amn969pckkf1gou2t4b3lh1l3@4ax.com>
Mime-Version:	1.0
X-Complaints-To:	usenet AT sea DOT gmane DOT org
X-Newsreader:	Forte Free Agent 1.93/32.576 English (American)

Hello,

i am trying to build a dll using cygwin and gcc. The dll will be used
by a delpi application.

The dll works fine. But when allocating memory 
(e.g.: char *c = new char) the programm crashes.

When compiling the dll with visual c++ 6.0 SP5 the dll works fine -
even if allocating memory.

Any hints? 

Best regards,

Christian Neise

P.S.:

I createdthe dll the following way:
gcc  -c dll_test.cpp -o debug/dll_test.o
gcc   -shared -o debug/dll_test.dll \
-L/usr/lib \
-Wl,--export-all-symbols \
-Wl,--enable-auto-import \
-Wl,--whole-archive debug/dll_test.o \
-L/usr/lib \
-Wl,--no-whole-archive -lc -lstdc++


testdll.h:

#include <string>

 extern "C" {
      __declspec( dllexport ) BOOL APIENTRY DllMain( HANDLE hModule,
                            DWORD  ul_reason_for_call,
                            LPVOID lpReserved
         );
 }




testdll.cpp:

#include "dll_test.h"

BOOL APIENTRY DllMain( HANDLE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
					 )
{
    switch (ul_reason_for_call)
	{
		case DLL_PROCESS_ATTACH:
		case DLL_THREAD_ATTACH:
		case DLL_THREAD_DETACH:
		case DLL_PROCESS_DETACH:
			break;
    }
    return TRUE;
}



--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -