Re: Problems compiling GCC 3.4.3 and libgcj

[Andrew Haley <aph at redhat dot com>]

Daniel Kent writes:
 > Hello,
 > 
 > I am working with a host / target machine setup. The cpu arch is 
 > the same on both, x86_64 (athlon64), the only real difference is 
 > size, ie. my host has a 80GB HD, my targets have 1GB compact flash 
 > disks (need this for mechanical vibration reasons). I have CentOS 
 > 3.4-x86_64 fully installed on my host, and my target machines have 
 > the same OS just with a much smaller package list.
 > 
 > I am trying to get GCC 3.4.3 compiled into a relatively small 
 > footprint (< 200 Mb), so I can use it on my targets. I only want 
 > c, c++ and java installed. I downloaded the gcc-core .tar and ran 
 > the make and make install on that and successfully installed it on 
 > my target machine, taking up approximately 40MB. When I build the 
 > core along with c++ and java, my libraries such as libgcj.a come 
 > out to be over 100MB! Compared to a 20MB libgcj on my Fedora 3 
 > machines.

We added lots of features, including a large graphics library.

 > I've tried compiling with different explicit options such as: 
 > --enable-shared, --disable-static, --with-arch=athlon64, and a 
 > whole bunch of others. Nothing I've tried gets the size of the 
 > libgcj.a file down, nor the other big libraries. Any help or 
 > insight would be greatly appreciatied. Thanks.

--disable-multilib is a good idea.  Also, if you strip libgcj.so it
will be far, far smaller.  See strip(1).

Andrew.