building gcj on OS X (also AWT)

Thu May 20 01:37:00 GMT 2004

On May 19, 2004, at 6:45 PM, Andrew Pinski wrote:
>>>> I'd like to build gcc 3.4.0 on Mac OS X 10.3.3. In particular,
>> I want gcj, hopefully with whatever AWT/Swing comes with it,
>> just so I can write command line and also simple GUI user apps.
>>>> I've got a few questions on the build procedure. I've already
>> downloaded gcc-core and gcc-java 3.4.0 from my local mirror.
>> I unpacked them in ~/src, and also created a build-directory there
>> ~/src/gcc_build_dir (so I can run the configure and make commands
>> from there) as the directions
>> http://gcc.gnu.org/install/configure.html
>> recommend.
>> You also need gcc-c++ as the Java compiler depends on the C++
> compiler.

Ok. Downloading it now... (on dialup)
>>>>> 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
>> You really do not need to set the CC anymore.

Thanks. I'll give it a try without it.
>>>>> ?
>>>> Do I then have to run 'make' with *no* target specified?
>> (Before running "make install")
>> no, it is already built.

Check.
>>>>> Looking at
>> http://gcc.gnu.org/install/specific.html#powerpc-*-darwin*
>> it says:
>> | The default stack limit of 512K is too small, which may cause
>> | compiles to fail with 'Bus error'. Set the stack larger, for
>> | instance by doing "limit stack 800".
>>>> What does it mean to "limit stack 800" and how would I go about
>> it? Is that something that gets done with ./configure or at
>> build-time?
>> The default stack limit on Panther (10.3) is much bigger than
> older versions, this really only applies to the older ones.
>
Check.
It might be useful (for other new folks getting started with gcj
on OS X) to update that note in
http://gcc.gnu.org/install/specific.html#powerpc-*-darwin*
>>>>> 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?
>>>> Will AWT only work with X (and not Quartz)?
>> Not yet, I have been thinking about adding it but I really do not
> have time to add support at this point.

Ok. So, does that mean I should to use --with-x and
--enable-java-awt=xlib when I ./configure?
Is there enough of AWT implemented to do some simple GUI stuff
(like buttons and labels)? I specifically want to be able to
have a button and to be able to draw some pixels (I'm recoding
a very simple raytracer I originally wrote in C++).
>> Thanks,
> Andrew Pinski
> a Mac OS X user and a GCC developer
>>
Thanks,
---John