On Fri, Oct 23, 2015 at 2:06 PM, Mark Linimon <lini...@lonesome.com> wrote: > On Fri, Oct 23, 2015 at 08:09:35AM -0700, Conrad Meyer wrote: >> What is __FreeBSD_version and why would it be bumped? > > __FreeBSD_version was introduced in the following commit: > > https://svnweb.freebsd.org/base/head/sys/sys/param.h?r1=34924&r2=36260 > > where it has been ever since: > > https://svnweb.freebsd.org/base/head/sys/sys/param.h?view=log > > This variable exists to tell the Ports Collection, among others, > that "something has changed that may require you to patch and/or > recompile." > > The historical values are documented in > > > https://www.freebsd.org/doc/en/books/porters-handbook/versions.html#freebsd-versions-table > > Your mentor should have shown you this information.
It's also really handy if you know that a KPI exists after `#if __FreeBSD_version > XYZ`. It doesn't work for folks who cherry-pick (like we do at $work, iXsystems with "NextBSD"/"TrueOS", etc), but it works for some upstream folks -- especially when you have something that uses a KPI in flux on a CURRENT branch for instance... *cough* see open-vm-tools and breakage due to vm(4) APIs being in flux ( :/..). _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
