FC4 java gcj - version of java.io.InputStreamReader?

[Alex Cruise]

Hi there,

I'm trying to compile some stuff using gcj, and have run into an as yet 
unsolved problem involving java.io.InputStreamReader.  Here's what I'm 
doing, and the output I'm getting:

> $ gcj -Ixml-apis.jar -IxercesImpl-2.2.1.jar -classpath <lots of jars, 
> none of which contains java.io.InputStreamReader--I checked> -c -o 
> xbean.o xbean.jar
> org/apache/xmlbeans/impl/common/SniffedXmlInputStream.java: In class 
> 'org.apache.xmlbeans.impl.common.SniffedXmlInputStream':
> org/apache/xmlbeans/impl/common/SniffedXmlInputStream.java: In method 
> 'org.apache.xmlbeans.impl.common.SniffedXmlInputStream.sniffForXmlDecl(java.lang.String)':
> org/apache/xmlbeans/impl/common/SniffedXmlInputStream.java:160: error: 
> class 'java.io.InputStreamReader' has no method named '<init>' 
> matching signature '(Ljava/io/InputStream;Ljava/nio/charset/Charset;)V'
> org/apache/xmlbeans/impl/common/SniffedXmlInputStream.java:160: error: 
> expected type 'null' but stack contains 'java.io.InputStreamReader'
> org/apache/xmlbeans/impl/common/SniffedXmlInputStream.java:160: 
> confused by earlier errors, bailing out
> make: *** [xbean.o] Error 1

Now, the only relevant copy of java.io.InputStreamReader should be the 
one in /usr/share/java/libgcj-4.0.0.jar and it looks like this:

> $ javap -classpath /usr/share/java/libgcj-4.0.0.jar 
> java.io.InputStreamReader
> Compiled from "InputStreamReader.java"
> public class java.io.InputStreamReader extends java.io.Reader{
>     public java.io.InputStreamReader(java.io.InputStream);
>     public java.io.InputStreamReader(java.io.InputStream, 
> java.lang.String)       throws java.io.UnsupportedEncodingException;
>     public java.io.InputStreamReader(java.io.InputStream, 
> java.nio.charset.Charset);
>     public java.io.InputStreamReader(java.io.InputStream, 
> java.nio.charset.CharsetDecoder);
>     public java.lang.String getEncoding();
>     public int read()       throws java.io.IOException;
>     public int read(char[], int, int)       throws java.io.IOException;
>     public boolean ready()       throws java.io.IOException;
>     public void close()       throws java.io.IOException;
> }

Clearly the constructor gcj is looking for is present in the 
corresponding .class file in that jar, and it's not a native method 
(I've decompiled it to have a look).  But, curiously, the 
/usr/include/c++/4.0.0/java/io/InputStreamReader.h that comes with 
libgcj-devel is a very old version that doesn't mention java.nio at all.

I don't have any JAVA_HOME or CLASSPATH set, or any pre-1.4 JVMs on my 
machine that would contain the older version of 
java.io.InputStreamReader.  I've tried moving that .h file aside to see 
if gcj is using it at runtime and it didn't make any difference, so I 
don't think the .h file is having a direct effect.  But it does look 
like evidence of some kind of version filtration having happened 
somewhere in the build process.

Does anyone have any hints as to why this might be happening, or how I 
might get past it?

Thanks!

-0xe1a