pgman wrote:
> Jan Wieck wrote:
> > >> >> > What Peter was advocating in that thread was that we enable -g by
> > >> >> > default *when building with gcc*. I have no problem with that, since
> > >> >> > there is (allegedly) no performance penalty for -g with gcc. However,
> > >> >> > the actual present behavior of our configure script is to default to -g
> > >> >> > for every compiler, and I think that that is a big mistake. On most
> > >> >> > non-gcc compilers, -g disables optimizations, which is way too high a
> > >> >> > price to pay for production use.
> > >> >>
> > >> >> You do realize that as of now, -g is the default for gcc? Was that the
> > >> >> intent?
> > >> >
> > >> > I was going to ask that myself. It seems strange to include -g by default ---
> > >> > we have --enable-debug, and that should control -g on all platforms.
> > >>
> > >> Could it be that there ought to be a difference between the defaults of
> > >> a devel CVS tree, a BETA tarball and a final "production" release?
> > >
> > > I am afraid that adds too much confusion to the debug situation. We
> > > have a flag to do -g; let people use it if they want it.
> > >
> >
> > Well, -g eats up some disk space, but for a gcc it doesn't need CPU
> > cycles or anything else. I doubt many people who pay the horrible
> > storage capacity overhead for PostgreSQL are that concerned about some
> > extra symbols stored with their binaries, but let's not argue about that
> > one.
>
> Well, people are stripping the executable, so some of them must care.
> In fact, if we enable -g by default for gcc, how do compile with default
> symbols? We would need another configure option. Strip is not the same
> as default symbols.
Let me also add that on my old dual P3 550 256MB RAM -g significantly
slowed down the build because linking took a long time, probably because
it had to read in all those debug symbols for the link --- I remember
the backend link taking quite a lot of time.
In fact, even though I was debugging the backend regularly, I removed -g
and added it only when I wanted to debug.
-- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610)
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