On 2010-10-31 13:48+0100 Benjamin King wrote:
Hi Alan!
Our build is taking ages (almost a three hours on the fastest of our
servers) and it would be really painful if everybody needed to rebuild
everything for himself in the morning.
Aren't you distributing your source code with some tool that preserves
the creation dates of source files? I think all of svn, rsync, tar, or
even cp -a do this.
Yes, we do use cvs and copy build trees with rsync -a/cp -a.
The problem is that because our builds take that long, nobody does a global
cvs update very often, but rather only on the parts he is working on.
It's user nightly that does an automated fresh checkout every night and sees
if everything is fitting together and passes the tests. That makes it more
attractive to copy the nightly build to continue your own work, because there
is some guarantee that it builds, passes the tests and incorporated the stuff
from the other teams.
Hi Benjamin:
This sounds like you are describing dependency problems with your
current build system. That should be a prime motivation to implement a
complete CMake-based build system which allows you to specify all
dependencies between your software components with no gratuitious
rebuilding. With a properly implemented complete CMake-based build
system, your users would be controlling what gets rebuilt in a
flexible way depending on what they choose to cvs update. That is the
ideal result and therefore a great selling point for CMake-based build
systems.
Alan
__________________________
Alan W. Irwin
Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).
Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
__________________________
Linux-powered Science
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