This is the mail archive of the
java@gcc.gnu.org
mailing list for the Java project.
Re: compilation problems with ecj.jar
Marco Trudel writes:
> Andrew Haley wrote:
> > Marco Trudel writes:
> > > Andrew Haley wrote:
> > > > Marco Trudel writes:
> > > >
> > > > > I get this error while compiling the current GCJ trunk:
> > > > >
> > > > > org/eclipse/jdt/core/compiler/CharOperation.java: In class
> > > > > 'org.eclipse.jdt.core.compiler.CharOperation':
> > > > > org/eclipse/jdt/core/compiler/CharOperation.java: In method
> > > > > 'org.eclipse.jdt.core.compiler.CharOperation.<clinit>()':
> > > > > org/eclipse/jdt/core/compiler/CharOperation.java:0: internal compiler
> > > > > error: Segmentation fault
> > > > >
> > > > > This is a class from the ecj.jar I downloaded. Is that ecj.jar work in
> > > > > progress? Should I update it frequently? Does it work for others?
> > > > >
> > > > > I configure with:
> > > > > configure --prefix=/home/Marco/Desktop/compile-lin-lin/gcc-XYZXYZ-lin
> > > > > --build=`/usr/local/src/gcc/config.guess` --host=i686-pc-linux-gnu
> > > > > --target=i686-pc-linux-gnu --enable-languages=c,c++,java --enable-libgcj
> > > > > --with-gnu-as --with-gnu-ld --disable-nls --disable-debug
> > > > > --disable-shared --disable-checking --enable-threads=posix
> > > > > --disable-win32-registry
> > > > > --with-gmp=/home/Marco/Desktop/compile-lin-lin/gmp-out
> > > > > --with-mpfr=/home/Marco/Desktop/compile-lin-lin/mpfr-out
> > > >
> > > > Please tell us exactly what command is being executed when you get
> > > > this error.
> > >
> > > Sorry, I intended to minimize the output but of course I cut too much
> > > away. Here you go with the whole one:
> >
> > Something to do with --disable-shared, I suspect. The build is
> > statically compiling ecj1; dynamic builds don't do that, interpreting
> > instead.
>
> But this is intended this way and ok?
Yes.
> > Nevertheless, this command does work for me, producing ecjx. It needs
> > a lot of memory to compile, though. Perhaps you're running out of
> > memory.
>
> Yes, I think you're right. I tried a couple of times and sometimes got
> "virtual memory exhausted: Cannot allocate memory", even if I removed
> optimization. How much RAM do you have? I have 1gb RAM and 2gb swap. I'm
> somewhat surprised that that's not enough or at least not enough without
> optimization...
The compilation process peaks at about 1.5G of RAM on my system. This
really only bites on --disable-shared builds. To fix this you can
either split the compilation into parts or replace ecjx with a simple
shell script that launches ecj.
Andrew.