Installing Portage stuff outside of Portage

[SignOfZeta]

I recently needed an install of the Simple DirectMedia Layer. Portage has all versions of media-libs/libsdl masked, so I just downloaded the 1.2.8-r1 source from SDL's website and built it myself (in true Gentoo fashion, using CFLAGS and configure-script options ). But now, I think I should tell Portage it's installed so other programs can use it should they require it as a dependency. How should I do this?

My idea was to add it to packages.provided, since I don't Portage messing with it (at least not until it becomes unmasked). However, I'm pretty sure an emerge --sync will overwrite most everything under /usr/portage. (We'll find out in a few minutes.)

I could add it to world, but then Portage might mess with it and ruin it or attempt to uninstall it, since the version (and all others) is masked. What should I do?
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[bkunlimited]

add SDL to /etc/portage/package.keywords and emerge it

[SignOfZeta]

Hey thanks, it's remerging (re-emerging) right now. I'm just curious as to why it works... isn't package.keywords a replacement for ACCEPT_KEYWORDS and USE on the command line?
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