[Bug java/17831] New: GCJ/CNI should be usable without 'gcjh'

[Bug java/17831] New: GCJ/CNI should be usable without 'gcjh'

[csm at gnu dot org]

A nice enhancement to GCJ would be to remove the need to invoke 'gcjh' on
compliled classes before compiling CNI C++ source. Extending this to JNI code
would be nice, too, but potentially harder.

That is, the following command line should work:

   $ gcj -shared -o lib-foo.so foo.java foo.cc

Or, even this exact sequence:

   $ gcj -c -o foo.o foo.java
   $ gcj -c -o foo-cni.o foo.cc
   $ gcj -shared -o lib-foo.so foo.o foo-cni.o

In theory this should be possible, since everything you need to compile to
'lib-foo.so' is present in those two files. But in practice, of course, this
touches potentially everything from g++ to cpp, and becomes pretty hairy indeed.

Maybe a good way to do this would be to extend cpp so front-ends can register
hooks to the include-lookups, so gcj could, for example, intercept certain
#includes to produce CNI headers on-the-fly.

Also, gcj/gcjh should be able to generate CNI/JNI headers from java source. gcjx
can (will be able to) do this, for example.

-- 
           Summary: GCJ/CNI should be usable without 'gcjh'
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: csm at gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
                    dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17831

[Bug java/17831] GCJ/CNI should be usable without 'gcjh'

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-04 23:38 -------
Well the easy way to do this is to create the headers while compiling, aka combine gcj and gcjh like gcjx 
does.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-10-04 23:38:59
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17831

[Bug java/17831] GCJ/CNI should be usable without 'gcjh'

[csm at gnu dot org]

------- Additional Comments From csm at gnu dot org  2004-10-07 01:11 -------
Yes, but gcj doesn't have this feature currently, and gcjh only works with
bytecode. In the least it should work with java source, too.

In my opinion being able to generate CNI headers along with the compilation step
would be invaluable in itself.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17831