libgcj.dll on MinGW

Thu Aug 25 23:08:00 GMT 2005

tj@laurenzo.org wrote:
>All --
>I have succeeded in getting gcj 4.1 (from May 15, 2005 source which
>seems to be about the last time GCC built for MinGW) to produce a
>shared libgcj-6.dll on MinGW. This is still a work in progress. In
>particular, I hacked up several things in the generated Makefile that
>I need to figure out how to backport to automake/autoconf. I've also
>got to play around a little more with dlltool and my script for
>generating a def file.
>>Now this doesn't necessarily mean that it works right, just that I can
>get a hacked up GCC source drop to build it. In particular, what I
>have now has some problem in the import library that gcj uses outside
>of its build tree that seems to be excluding an underscore from
>imported names (it seems like every tool for Windows loves to randomly
>add or remove underscores... it is truly maddening).
>>In the installation, some things are working and others aren't. I
>have used gij linked against the dll to run trivial programs. It also
>seems that jv-scan works. The other EXE's in the bin directory throw
>access-violations.
>>As an aside, the dll has gained substantial weight since the 3.3 days.
> Unstripped I show about 22MB. Stripped drops it down to 13MB. It
>compresses pretty nicely, though.
>>You can download my successful build from
>http://www.vetrics.com/temp/gcc_native.tbz2
>These binaries include my patches for enabling return type mangling
>(for Java 5 compatibility) along with a few miscellaneous patches
>needed to get the source to build for MinGW.
>>I'll post more once I get the build ironed out a bit so that it is
>generally repeatable. I figure that having a straight-forward,
>controlled way to build the dll for MinGW is the first step to
>actually diagnosing and fixing some of the myriad of problems that
>crop up from the way Windows DLLs are different form Unix shared
>libraries.
>>TJ
>>>>Hello TJ,
This is great progress. What is the status of gcj/libgcj with static 
linking? Will your version gcj compile functioning ".exe"'s yet??
If so, I'd like to build what you have now because we need it rather badly.
Thanks a lot,
craig vanderborgh
voxware incorporated