www/firefox3 Profile-Guided Optimization

[Mario Sergio Fujikawa Ferreira]

Hi,

	I thought we should consider adding an OPTIONS entry to
allow building firefox3 with Profile-Guided Optimization.

	The firefox3 build toolchain supports it out of the box as
mentioned on

https://developer.mozilla.org/en/Building_with_Profile-Guided_Optimization

and this should yield a massive performance improvement.

	I began a patch for the www/firefox3 port. Add

mozconfig-profile_guided_optimization.in

to FILESDIR. Then, apply the attached patch to the port's Makefile.

	That is just a preliminary try out. It does not work yet.
According to the mozilla documentation, the pre-build target I added
(commented out) to the Makefile should do the job.

	However, the port currently uses the build toolchain through
the configure-stage-generated Makefiles which I cannot decipher
when trying to find a way to invoke the equivalent of

$ gmake -f client.mk profiledbuild

when WITH_PGO is defined.

	Does anyone have an idea on how to procceed?

	Regards,

-- 
Mario S F Ferreira - DF - Brazil - "I guess this is a signature."
feature, n: a documented bug | bug, n: an undocumented feature
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mk_add_options PROFILE_GEN_SCRIPT='@PYTHON@ $(OBJDIR)/_profile/pgo/profileserver.py'
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