building gcj on OS X (also AWT)

[Andreas Tobler]

Hi John,

John Gabriele wrote:


> So, since I guess I'm building what the directions
> refer to as a "native compiler" (?), is it correct that my
> procedure should be:
> 
> cd ~/src/gcc_build_dir
> 
> ../gcc-3.4.0/configure --prefix=/usr/local/gcj \
> --enable-threads=posix --enable-shared
> 
> make CC='cc -no-cpp-precomp' bootstrap

As Andrew pointed out, not everything is needed here.
This is how I do it.

In the created build dir:

/Volumes/xufs/gcc-cvs-dylib/gcc/configure 
--prefix=/Volumes/xufs/gcc-cvs-dylib/testbin 
--enable-languages=c,c++,java --disable-checking --enable-debug

--disable-checking just gives you a faster build, but it should be 
disabled anyway on 3.4. --enable-debug is also not necessary for regular 
builds, just for me :)

make bootstrap.

This way you get a compiler which has c,c++ and gcj + libraries.


> Also, is GCJ's AWT currently the best option (vs. Swing) to do
> a simple GUI? Are there any special ./configure options I need
> to use? The instructions
> http://gcc.gnu.org/install/configure.html
> hint at --with-x and --enable-java-awt=xlib
> and although I *do* have Apple's X11 installed, I'm not sure
> what to do here. Will gcj's awt use OS X's Quartz by default
> if I leave those arguments out?

Atm, xlib does not work, due to java issues we have to figure out first.
I tried --enable-java-awt=gtk which allowed me to run the TestAWT.java 
native and interpreted.

But it needs quite a bit work until you see the first window :)
You need the gtk stuff built with a gcc which allows dylibs (3.4 does)
Then you have to build gcc again with the gtk included. Also, before you 
need to tweak gcc that it supports signal handling.
Libjava needs then this signal handling enabled.

(just a fyi, I do not fink, I have to build the gtk & friends on my own.)

I hope to be able to give you more instructions soon. Atm, I have no 
build machine around. But I guess I have one soon:)
Then I can post the instructions to build --enable-java-awt=gtk.

Until then I suggest you just try to build gcc on your own without any 
tweaks to just get the feeling.

> Will AWT only work with X (and not Quartz)?

Unfortunately yes, and only with gtk. Xlib may come later. Also I think 
native bindings will have to wait a bit. (Quartz)
We first have to integrate all the tweaks to gcc and friends until we 
can start with this.


Andreas
a Mac OS X user and a GCC contributor

P.S attached a screen shot from how it looks like :)



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