On Tue, 1 May 2007, Craig Silverstein wrote:
> What I've done in other projects is -g + strip. This ends up the same
> size as just omitting the -g, but this way, if you get a core file and
> need to look inside pcre, you can just recompile pcre with -g (and
> without strip), and all the addresses will still be right.
There doesn't seem to be a standard way of altering the default compiler
options that are set up by Autoconf. I have, therefore, done it "by
steam" in the configure.ac file. (If CFLAGS is not set on the command
line and it ends up as "-g -O2", reset it to just "-O2", or if it ends
up -g, reset it empty, and likewise for CXXFLAGS.)
This has a dramatic effect on the size of the compiled library. It also
adds a very small bit of performance:
.a file .so file time to run RunTest
Without -g: 163,374 153,056 1.06
With -g: 411,566 331,736 1.08
Those figures are on Linux; no doubt there's a similar effect on
Windows.
Philip
--
Philip Hazel, University of Cambridge Computing Service.
