>>> On 4/26/2007 at 11:06 AM, in message <[EMAIL PROTECTED]>, "Bernard Li" <[EMAIL PROTECTED]> wrote: > Brad: > > I recommend you take a look at this thread in ganglia-developers: > > http://sourceforge.net/mailarchive/message.php?msg_id=36BEEFA2DF192944BF71E0 > 72F7A5F465228FE7%40xchange1.phage.bcgsc.ca > > It offers a potential solution to platforms that do not have apr > installed and also opinions of other distribution packagers regarding > this issue :-) > > Thanks, > > Bernard >
Yep, the whole reason why I left it so that static linking with the Ganglia copy of APR still works. Since I am fairly new to this project, I didn't want to step on any toes too hard ;) Going forward I think that I am in agreement with the idea of shipping two tarballs or at least providing --with-libXXX=<lib_path> configure options so that the packager or user has the option of how to build a complete Ganglia system. I really don't care what the defaults for the configure options are. They could default to dynamically linking the distro's libraries or statically linking the Ganglia packaged versions. Configure can also be a little smarter and try to detect if the library is already on the system before including and building the Ganglia packaged version. Bottomline is that we can certainly make the external libraries optional. One issue that needs to be addressed is if Ganglia builds and installs APR (or any external library) onto a system that already has Apache or Subversion installed, there is the potential for a problem with duplicate versions of APR (expat, confuse, etc.). As it stands, Ganglia is not making sure that it is not attempting to reinstall an existing library. Of course this was one of the arguments for static linking. However the problem with static linking at least APR, is that now that we have plugable metrics modules for GMOND, no metric module would be able to use APR. Therefore, going forward, we need to dynamically link APR. So the way to solve the problem would be to always build the external libraries as DSO's if the appropriate library does not already exist on the box. Then install the libraries in an /opt/ganglia/lib location. Anyway, sounds like there has been some good discussion on this topic in the past. So let's solve it and move forward. Brad
