Compiling of GCJ and SWT under MacOS X

Wed Feb 9 17:25:00 GMT 2005

cyberdeth@spymac.com writes:
 > I have downloaded gnu gcc 3.4.3 and compiled it with the following command line 
 > parameters : 
 > 
 > configure --prefix=/usr --enable-languages=c,c++,java,f77,objc 
 > --enable-threads=posix --enable-shared 
 > 
 > make bootstrap 
 > 
 > make install 
 > 
 > Now this compiles everything fine under MacOS X.3 using the gcc compiler that 
 > comes with the Developer Tools ie. gcc 3.3 When I compile a Hello World 
 > program using gcj, like so : 
 > 
 > gcj Test.java -o Test --classpath /usr/share/java/libgcjxxx.jar:$CLASSPATH 
 > --main=Test -lgcj 
You should not do this. If gcj is faliing to find libgcj.jar,
something is wrong.
 > Then it compiles fine and the output from the program is as
 > expected.
 > 
 > But. When I try to link against the libswt-carbon-xxxx.jnilib all
 > hell breaks loose. I have tried to make a symlink from *.jnilib to
 > *.dylib and even to .a. When I do a file on the jnilib it says it's
 > a bundle.
Where did this library come from?
 > I have tried to copy the jnilib files 
 > into /System/Library/Frameworks/JavaVM.framework/Libraries and linking the 
 > program as follows. 
 > 
 > gcj Test.java -o Test --classpath /usr/share/java/libgcjxxx.jar:$CLASSPATH 
 > --main=Test -lgcj -framework JavaVM 
Don't use "-lgcj".
 > which fails. 
 > 
 > When I do an ld style 
 > 
 > ld Test.o -o Test -lgcj -framework JavaVM then it gives me an error that no __main is 
 > found hence the --main=Test option. 
 > 
 > when doing a gcj Test.o -o Test -lgcj libswt-carbon-xxxx.jnilib it fails as well telling 
 > me that i can't call a static link editor using a dynamic link editor or something like 
 > this. And this is where I'm struggling with. 
 > 
 > I mean if I link against any other jnilib in the JavaVM framework it compiles 
 > correctly. Maybe the jnilibs shouldn't be bundles ??? 
 > 
 > My long winded questions is : 
 > 
 > 1) Is my gcc configuration flags correct ? 
Yes.
Andrew.