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Subject:	Re: gcj exception compiling
From:	"Yaakov (Cygwin/X)" <yselkowitz AT users DOT sourceforge DOT net>
To:	cygwin <cygwin AT cygwin DOT com>
Date:	Sat, 05 Nov 2011 20:28:12 -0500
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On Sat, 2011-11-05 at 19:13 +0100, Kraus Philipp wrote:
> Hello,
> 
> I try to build a Java class with the gcj under Cygwin. I get this error message:
> 
> Exception in thread "main" java.lang.NoClassDefFoundError: org.eclipse.jdt.inter
> nal.compiler.batch.GCCMain
>    at gnu.java.lang.MainThread.run(Unknown Source)
> Caused by: java.lang.ClassNotFoundException: org.eclipse.jdt.internal.compiler.b
> atch.GCCMain not found in gnu.gcj.runtime.SystemClassLoader{urls=[], parent=gnu.
> gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
>    at java.net.URLClassLoader.findClass(Unknown Source)
>    at java.lang.ClassLoader.loadClass(Unknown Source)
>    at java.lang.ClassLoader.loadClass(Unknown Source)
>    at gnu.java.lang.MainThread.run(Unknown Source)

You're missing the ECJ jar.  Either download
ftp://sourceware.org/pub/java/ecj-4.5.jar and install it
to /usr/share/java/ecj.jar or install java-ecj from Cygwin Ports.

> The class does not have any main function. 
> On the default gcj installation, it creates this error first:
> 
> /usr/lib/gcc/i686-pc-cygwin/4.5.3/ecj1.exe: error while loading shared libraries
> : cyggcj-11.dll: cannot open shared object file: No such file or directory
> 
> So I install the gcj-11 library, the setup installs gcj-9 on default.
> 
> How can I create a working installation?

Install libgcj11.

(P.S. Dave Korn: I took the liberty of fixing this on sourceware.)


Yaakov



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