Reducing static binary sizes

Tue Jan 10 13:49:00 GMT 2006

Andrea Aime writes:
 > Anthony Green wrote:
 > > On Sun, 2006年01月08日 at 09:44 +0100, Andrea aime wrote:
 > > 
 > >> Cool, thank you Adam, I'll try it and report back where I got with 
 > >> executable size reduction. In the meantime, can someone more knowledgeable
 > >> tell the poor java programmer if it's possible to link a different version
 > >> of the runtime library (a stripped one, for example) instead of the
 > >> standard libgjc? I've tried to read the gcj online manual, but didn't have
 > >> much luck...
 > > 
 > > 
 > > If I understand your question, then yes. Just link normally with gcj -v.
 > > The -v option tells the compiler to be verbose about what it's doing. Look
 > > at the list of objects files and libraries that it uses in the link. Then
 > > link again, this time with gcj -nostdlib and use that entire list of object
 > > files and libraries, simply replacing -lgcj with your own version.
 > 
 > I've tried following your suggestions. I've created a shrinked version of
 > all my libraries plus gcj with gcclass, resulting in a single jar file.
 > 
 > Then tried to compile with -v, removed -lgcj and added -nostdlib and all
 > the libraries usually linked by gcj (quite a lot, I wonder if they're all
 > necessary), but now gcj complains he has not .spec file to refer to.
 > I've tried to point it to the standard spec file I've found into the gcj
 > distribution I'm using, but it does not work. I get an error about a rename
 > directive at the top of the file, which I suspect is due to the modification
 > performed in the thisiscool.com distribution, removed the rename directive and
 > now gcj complains it doesn't know about jc1.exe... specifying the full jc1.exe
 > path in the spec file does not help...
 > 
 > Can you give me some indication on how to build a working spec file?
Please paste what you did with the compiler output; we need detail.
Andrew.