[java-gnome-hackers] --with-gcj-compile almost works now

[VEROK I. <vi...@in...>]

After ./configure --with-gcj-compile, the following patch
needs to be applied to the generated makefiles.  This compiles
the native libraries cleanly, and linking them to native
binaries is almost possible, too.  Error messages are listed
after the patch.


diff -urN java-gnome.orig/src/Makefile java-gnome/src/Makefile
--- java-gnome.orig/src/Makefile	2002-12-07 18:49:02.000000000 +0100
+++ java-gnome/src/Makefile	2002-12-07 18:21:35.000000000 +0100
@@ -119,7 +119,8 @@
 		sort | sed -e 's/\.c/\.o/g')
 
 GNOME_CLASSES:= \
-	$(shell ls java/org/gnu/gnome/*.java)
+	$(shell ls java/org/gnu/gnome/*.java) \
+	$(shell ls java/org/gnu/gnome/event/*.java)
 
 GNOME_O = ${GNOME_CLASSES:.class=.o}
 
@@ -143,12 +144,12 @@
 # native targets
 
 native-gtk:	$(GTK_O)
-	$(GCJ) -g -shared $(GTK_O) -o ../lib/libGTKJar.so.${version}
+	$(GCJ) -fPIC -fjni -g -shared $(GTK_O) -o ../lib/libGTKJar.so.${version}
 	@(cd ../lib; test ! -L libGTKJar.so && ln -s libGTKJar.so.${version} libGTKJar.so) || exit 0
 
 
 native-gnome:	native-gtk $(GNOME_O)
-	$(GCJ) -g -shared $(GNOME_O) -o ../lib/libGNOMEJar.so.${version}
+	$(GCJ) -fPIC -fjni -g -shared $(GNOME_O) -Ibuild-java/gtk -Ibuild-java/gnome -o ../lib/libGNOMEJar.so.${version}
 	@(cd ../lib; test ! -L libGNOMEJar.so && ln -s libGNOMEJar.so.${version} libGNOMEJar.so) || exit 0
 
 
@@ -180,7 +181,7 @@
 	@(cd ../lib; test ! -L libGladeJava.so && ln -s libGladeJava.so.${version} libGladeJava.so) || exit 0
 
 native-glade: $(GLADE_O)
-	$(GCJ) -g -shared $(GLADE_O) -o ../lib/libGladeJar.so.${version}
+	$(GCJ) -fPIC -fjni -g -shared $(GLADE_O) -Ibuild-java/gtk -I/opt/xalan/xalan.jar -o ../lib/libGladeJar.so.${version}
 	@(cd ../lib; test ! -L libGladeJar.so && ln -s libGladeJar.so.${version} libGladeJar.so) || exit 0
 
 
diff -urN java-gnome.orig/test/Makefile java-gnome/test/Makefile
--- java-gnome.orig/test/Makefile	2002-12-07 18:49:02.000000000 +0100
+++ java-gnome/test/Makefile	2002-12-07 17:32:33.000000000 +0100
@@ -37,9 +37,11 @@
 glade:
 
 native-gtk:	
-	
+
 native-gnome:
-	
+
+native-glade:
+
 # Targets to clean after us
 
 .PHONY: mostlyclean clean distclean maintainer-clean


The /opt/xalan/xalan.jar I used above is not a hard requirement,
anything will do that has the JAXP interface classes, such as the
xmlapis.jar archive distributed with Xerces.

Making a completely native binary out of the Glade example
Example1 results in just the following linking errors
(instead of the thousands that I received before):

../lib/libGTKJar.so: undefined reference to `java::lang::Throwable::getCause()'
../lib/libGTKJar.so: undefined reference to `java::lang::Throwable::initCause(java::lang::Throwable*)'
../lib/libGladeJar.so: undefined reference to `java::lang::reflect::Proxy::newProxyInstance(java::lang::ClassLoader*, JArray<java::lang::Class*>*, java::lang::reflect::InvocationHandler*)'
../lib/libGTKJar.so: undefined reference to `java::lang::Throwable::getStackTrace()'
../lib/libGTKJar.so: undefined reference to `java::lang::Throwable::setStackTrace(JArray<java::lang::StackTraceElement*>*)'
../lib/libGladeJar.so: undefined reference to `javax::xml::parsers::SAXParserFactory::newInstance()'
../lib/libGladeJar.so: undefined reference to `java::lang::reflect::InvocationHandler::class$'
collect2: ld returned 1 exit status

Since I just grabbed the libgcj-3.3.jar out of Debian's
current gcc-snapshot package, with no accompanying
native libraries, I suspect that these may also be
satisfied by a careful and complete upgrade to
gcc-snapshot.  I will look into it.

The current libgcj-3.3.jar appears to have support for
Throwable.initCause(), Throwable.setStackTrace(), and other
1.4 features, so those should not be a problem either.
And there was much rejoicing.

Istvan