Rajendra's Blog
Wednesday May 07, 2008
Building OpenJDK with New NIO.2 patch
Source code for NIO.2 is available as a patch. I have applied the NIO.2 patch to the clone of OpenJDK repository and built the OpenJDK source in Solaris-Sparc and Ubuntu 8.04 on x86 machine.
Here are the steps I have followed.
> Install Mercurial 0.9.5 and update hg configuration file ~/.hgrc with forest extension.
> To install forest extension to mercurial
> export http_poxy=your proxy
> hg clone http://hg.akoha.org/hgforest
[extensions]
forest=/home/rajendra/hgforest/forest.py
hg fclone http://hg.openjdk.java.net/jdk7/tl jdk7
> download nio2-b90 patch
> move to folder jdk7/jdk and apply the nio patch with following command
patch -p1 < nio2-b90.patch
Here I executed the sample code DiskUsage.java which exhibits as df utility with the new build as follows.
$ ~/jdk7/build/bin/java -version openjdk version "1.7.0-internal" OpenJDK Runtime Environment (build 1.7.0-internal-b27) OpenJDK Client VM (build 12.0-b01, mixed mode) $~/jdk7/mytl/build/bin/java DiskUsage Filesystem kbytes used avail / (/dev/sda1) 113313700 5238532 102364464 /proc (proc) 0 0 0 (output discarded)
Try yourself and send feed-back, comments and suggestions to NIO OpenJDK project. I hope you will enjoy.
Posted at 03:34PM May 07, 2008 by Rajendra Gutupalli in Sun | Comments[22]
How about compiling in other OS like CentOS 5.x & Windows Vista?
Uday.
Posted by Uday on May 13, 2008 at 03:09 AM IST #
Hi,
I am trying to build it following your instructions.
clone, patch works file, but compiling jvm failed with error:
src/os/linux/vm/jvm_linux.cpp
cc1plus: warnings being treated as errors
/home/tigran/fix/jdk7/jdk7/hotspot/src/os/linux/vm/jvm_linux.cpp:179: warning: deprecated conversion from string constant to ‘char*’
...
make[5]: *** [jvm_linux.o] Error 1
..
My environment:
tigran@nairi:~> uname -a
Linux nairi 2.6.22.17-0.1-default #1 SMP 2008/02/10 20:01:04 UTC i686 i686 i386 GNU/Linux
tigran@nairi:~> make --version
GNU Make 3.81
tigran@nairi:~> gcc --version
gcc (GCC) 4.2.1 (SUSE Linux)
tigran@nairi:~> ant -v
Apache Ant version 1.7.0 compiled on December 13 2006
Thanks,
Tigran.
Posted by Tigran Mkrtchyan on June 18, 2008 at 02:26 PM IST #
Please see my post http://blogs.sun.com/rajendrag/entry/building_openjdk_in_ubuntu_8
I have mentioned about this issue.
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Well thanks for the information ..but still i am facing some troubles in copying the embedded jvm files to my setup in vista ..i need a tutorial or a guide perhaps to get the better command of the subject.
I have used the extensions [extensions]
forest=/home/rajendra/hgforest/forest.py but gain i thibnk some important file is missing in my vista.
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