-fprofile-arcs and portage

pantherace · Tux's lil' helper Joined: 18 Mar 2003 Posts: 79

given how gentoo seems to be used by many for the optimizations (as well as nice things like ease of most everything, IMO)

What about adding a USE flag or something which causes portage to enable the -fprofile-arcs and then a few days later, using that data, remerge the program?

Alas, I don't know python, so i don't know how difficult it would be to do,and I am sure it could cause all sorts of problem.

Comments are hoped for.

Gnufsh · Guru Joined: 28 Dec 2002 Posts: 400 Location: Portland, OR

I've been contemplatig this, but I don't know anywhere near enough to impliment it. You would havve to copy the files generated by programs compiled with -fprofile-arcs back into the temporary directory when you compile with -fbranch-probabilities. It might be best implimented on a ebuild by ebuild basis, with a USE flag.

Lovechild · Posted: Mon Apr 21, 2003 11:51 am Post subject:

we have a FEATURE flag called keepwork and keeptemp which "should" keep the workdirs, so we can do this.