Re: GCJ and C++ (calling Java from C++)

[Andrew Haley <aph at redhat dot com>]

Lothar Werzinger writes:
 > On Tuesday 29 November 2005 10:16, Andrew Haley wrote:
 > > That NullPointerException is the clue.  It's happening when some class
 > > is being resolved, and it's probably being casued by some sort of
 > > linking problem.
 > >
 > > (I was guessing that you weren't calling JvCreateJavaVM(), which would
 > > cause this problem.  But you are, so it's not that.)
 > >
 > >  >      [exec] ...4 more
 > >  >
 > >  > So I am a kind of stuck here :-(
 > >
 > > Forgive me if I still can't see something obvious, but I really do need to
 > > know how you built this program.
 > 
 > Well, that's why I attached the example as a tar file in the first place. I 
 > assumed I might have done something wrong building the whole thing (this is 
 > my first use of gcj I only used gcc/g++ before).
 > 
 > I attached the example again with the latest source changes.  the
 > build.xml in org.eclipse.emf.examples.library.edit should tell you
 > enough about how the program is built.

But it does not work.  Why not just tell us what commands you execute
to do the build?

aph@zorro org.eclipse.emf.examples.library.edit]$ ant
Buildfile: build.xml

headers:
     [exec] find: ../org.eclipse.emf.examples.library/bin: No such file or directory
     [exec] find: bin: No such file or directory
     [exec] using CNI
     [exec] mkdir: created directory `cpp/include'
     [exec] mkdir: created directory `cpp/include/test'

objects:
     [exec] gcj: bin/test/LibraryTest.class: No such file or directory
     [exec] gcj: no input files

BUILD FAILED
/home/aph/tmp/org.eclipse.emf.examples.library.edit/build.xml:108: exec returned: 1

Total time: 0 seconds

Andrew.