[fedora-java] Using the natively-built Eclipse compiler

[Andrew Haley]

Ziga Mahkovec writes:
 > On Tue, 2005-03-08 at 18:01 -0500, Bryce McKinlay wrote:
 > > Ziga Mahkovec wrote:
 > > >I compared the compilation times for a simple HelloWorld class:
 > > >
 > > >ecj                |  ecj-native         |  jikes
 > > >-------------------------------------------------------------
 > > >real    0m8.462s   |  real    0m8.624s   |  real    0m0.101s
 > > >user    0m7.791s   |  user    0m8.230s   |  user    0m0.048s
 > > >sys     0m0.093s   |  sys     0m0.083s   |  sys     0m0.006s
 > > >
 > > > [...] 
 > > >
 > > Something is wrong here. It looks like your ecj is running interpreted 
 > > both in the "ecj" and "ecj-native" cases.
 > 
 > $ rpm -q libgcj eclipse-ecj
 > libgcj-4.0.0-0.30
 > eclipse-ecj-3.1.0_fc-0.M5.10
 > $ gcj-dbtool -l /usr/lib/eclipse/eclipse.db | wc -l
 > 19865
 > $ export CLASSPATH=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/lib/tools.jar
 > $ time gij -Dgnu.gcj.precompiled.db.path=/usr/lib/eclipse/eclipse.db \
 >   com.sun.tools.javac.Main HelloWorld.java
 > 
 > real    0m8.687s
 > user    0m8.591s
 > sys     0m0.091s
 > 
 > 
 > And strace indicates that eclipse.db is opened.  Is there anything else
 > I can check?

time gij -verbose:class ...

Andrew.