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Javahl, alternative to jikes & Debian

From: Christophe Labouisse <gabuzo_at_tigris.org>
Date: 2004-10-27 18:36:39 CEST

I've been trying to create a patch for the current Debian package to
build the javahl bindings. In order to be compliant with Debian policy I
had to put aside using Sun's JDK and work with alternative compilers:
gcj & kaffe. Jikes is currently out because of a bug (issue 2057) but
also because compiling the javahl bindings requires both javac & javah.

Gcj is suggested in issue 2057 discussion and may be convenient as it
includes gcjh which is a replacement for Sun's javah. This last part is
currently not working because of a bug in gcjh which prevent it to
generate #defines for java constants as the other javah compilers do

Kaffe is not bad however, I ran into 2 bugs. The first one is most
probably a Kaffe bug since in CommitMessage.cpp at line 106 uses
NewObjectArray which is declared as returning a jarray in Kaffe's jni.h
while CommitMessage.cpp wants to put it in a jobjectArray. The second
one is also probably a Kaffe bug although I'm not really sure. In
JNIByteArray.cpp, the getBytes method returns a signed char pointer
while m_data is declared as jbyte*. This does not cause any problem with
Sun's javah as jbyte is a typedef for signed char but Kaffe's definition
of jbyte is char. Hence a compilation error on JNIByteArray.cpp line 80.

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Received on Wed Oct 27 18:36:56 2004

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