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Calling JVM from cygwin
- To: cygwin at cygwin dot com
- Subject: Calling JVM from cygwin
- From: Ignasi Villagrasa <gri at netcom dot es>
- Date: Mon, 12 Nov 2001 13:11:55 +0000
- Organization: gri
I'd like to call JVM from C native call using Cygnus compiler.
I work in W2000 enviroment using GCC Cygnus compiler.
I followed JNI instructions.
I read in Java forums there was a change in JDK, and instead of
attaching javai.dll, jvm.dll had to be attached.
Then I made a test using invoke.c example from JDK.
I built following .bat file:
gcc -c invoke.c -Id:\jdk1.3.1\include -Id:\jdk1.3.1\include\win32
DLLTOOL --dllname jvm.dll --def libjvm.def --output-lib
d:\jdk1.3.1\jre\bin\classic\libjvm.a
c++ -o invoke.exe invoke.o -Ld:\jdk1.3.1\jre\bin\classic -ljvm
with libjvm.def :
EXPORTS
_imp__JNI_GetDefaultJavaVMInitArgs@4
_imp__JNI_CreateJavaVM@12
All seems to work fine, and invoke.exe is generated. But when trying to
run it, I get a windows message telling me :
invoke.exe doesn't find the entry point to _imp__JNI_CreateJavaVM@12 in
jvm.dll.
What am I going wrong ?
Any calling convention issue ?
I have seen several messages about JNI linking, and tried some changes
in .def calls with no results.
Is there anyone having the same problem ?
Thanks in advance. Ignasi Villagrasa.
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