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
From:	"Thomas X. Hoban" <thoban AT verbalogic DOT com>
To:	<cygwin AT cygwin DOT com>
Subject:	Linking with JNI Invoke Using Cygwin gcc
Date:	Thu, 5 Jun 2003 16:21:18 -0500
Message-ID:	<DLEPIMCBMLJEPMIPNAEDOEFOCAAA.thoban@verbalogic.com>
MIME-Version:	1.0
X-Priority:	3 (Normal)
X-MSMail-Priority:	Normal
X-MimeOLE:	Produced By Microsoft MimeOLE V6.00.2800.1165
Importance:	Normal

I have written a DLL and a test program that uses the JNI api to invoke a
JVM.  When I try to link with a test program, I get an error indicating that
a reference to __imp__JNI_CreateJavaVM AT 12 is undefined.

$ export JAVA_HOME=/cygdrive/c/j2sdk1.4.1_02
$ g++ -c –I$JAVA_HOME/include –I$JAVA_HOME/include/win32 JavaGateway.c++
$ g++ -I$JAVA_HOME/include –I$JAVA_HOME/include/win32 –L$JAVA_HOME/lib \
-ljvm JavaGateway.o -o testGateway testGateway.c++

The link command above produces these errors:

JavaGateway.o(.text+0x171):JavaGateway.c++: undefined reference to
`__imp__JNI_CreateJavaVM AT 12'
JavaGateway.o(.text+0x251):JavaGateway.c++: undefined reference to
`__imp__JNI_CreateJavaVM AT 12'
collect2: ld returned 1 exit status

I assume that the jvm.lib file provided with the sdk was compiled with MS
VC++.  Does the cygwin gcc compiler massage the symbol references
differently from MS?  Does anyone have a suggestion on how I can make this
work?

Thanks,

Tom


--
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 -