Date: Mon, 8 Jun 2020 17:22:16 +0200 From: Daniel Ebdrup Jensen <debdrup@FreeBSD.org> To: "freebsd-hackers@freebsd.org" <hackers@freebsd.org> Subject: Re: How to test modification to a userland program (e.g., sed)? Message-ID: <20200608152216.7ihcflq2ixlgjui2@nerd-thinkpad.local> In-Reply-To: <db7e9854-bf55-06bf-d058-909be7318628@FreeBSD.org> References: <db7e9854-bf55-06bf-d058-909be7318628@FreeBSD.org>
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[-- Attachment #1 --] On Mon, Jun 08, 2020 at 05:11:55PM +0200, Mateusz Piotrowski wrote: >Hello hackers@, > >What is your preferred way to test local modifications to userland >programs such as sed(1)? > >It feels like the correct way would be to create a jail, enter that >jail, get the modified version of the src tree inside the jail and then >run "make install check" in an appropriate subdirectory within that src >tree (e.g., usr.sbin/sed). > >There must be a simpler way, not involving a jail, right? > >I've tried to experiment with the something along the following sequence >of commands as well but it feels hacky and makes some of the tests fail: > > export DESTDIR=/test > SRCTREE=/src > make -C $SRCTREE hierarchy > make -C $SRCTREE/usr.bin/sed install > export PATH="$DESTDIR/usr/bin:$PATH" > make -C $SRCTREE/usr.bin/sed check > >Cheers, >Mateusz >_______________________________________________ >freebsd-hackers@freebsd.org mailing list >https://lists.freebsd.org/mailman/listinfo/freebsd-hackers >To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" Hi Matreusz, I think using ephemeral jails with nullfs mounts for /usr/src and /usr/obj for this is a perfectly valid way to test, as it gives you a clean environment. The only improvement I can think of is to ensure that your source tree is using metamode [1], so that when you're rebuilding a single application, only the files you changed are rebuilt between each build. If you're using zfs snapshots and clones, creating the base filesystem for the ephemeral jail also becomes incredibly quick. Do let us know what you settle on, though - I'm sure there are people other than me, who would be interested to learn if you're doing anything that we might learn from. :) Yours, Daniel Ebdrup Jensen [1]: https://wiki.freebsd.org/MetaMode [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iQGTBAABCgB9FiEEDonNJPbg/JLIMoS6Ps5hSHzN87oFAl7eV6hfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDBF ODlDRDI0RjZFMEZDOTJDODMyODRCQTNFQ0U2MTQ4N0NDREYzQkEACgkQPs5hSHzN 87rZ2Af/e3qW2QafcDeHqTBWveVO6SIwEIVBy1bwYRFvjOtQE4k49lkSa7YzRWkS TDAgpl1iGCZY9BVP0QONU6pqcn07QDMFwPE+Lx2kxQt/nKcfRf8TdyT+HwSjMPji 0pWCPx+WfWD86Pc+GNpspNs1s8PDduSULaV74tGaddvJzCLllsMbaq0xGTIpJxw/ aYdqFYltCqYFV76fEHwvlqwe6fP7cYtx5Qj88APRoJmD80i3Ym4OkSovD9MHx/W8 YKtglYRThaIB8aywWy8XGE9V/ig4t/kaKUMr7oFADJpMVuBDxioSQg5dbHutlrla kbUfkqZO030pvH0clWaiRwI58iZTqQ== =fSJG -----END PGP SIGNATURE-----
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