Date: Mon, 3 Jul 2017 16:28:51 -0400 From: Chris Ross <cross+freebsd@distal.com> To: Kurt Jaeger <lists@opsec.eu> Cc: freebsd-stable@freebsd.org Subject: Re: Compile-time check for clock_nanosleep() Message-ID: <F19A4BAB-4F6B-4BBB-998E-EAB302E8911B@distal.com> In-Reply-To: <20170703184610.GH65214@home.opsec.eu> References: <BC299EA0-EFE3-4F44-BBED-8D0D18C632D4@distal.com> <20170703184610.GH65214@home.opsec.eu>
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[-- Attachment #1 --] > On Jul 3, 2017, at 14:46, Kurt Jaeger <lists@opsec.eu> wrote: > > Use __FreeBSD_version from sys/param.h: > > https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/versions.html Thanks. That looks great. Also, for my specific case of the addition of clock_nanosleep(), it looks from time.h like I could use "__POSIX_VISIBLE >= 200112”. Maybe that isn’t safe, since later looking at time.h on 11.0 and on 11.1, the latter has a definition for clock_nanosleep() in that block, but the former does not. Yeah, digging around it appears that stable/11/sys/sys/param.h at r316498 had __FreeBSD_version at 1100512, and it was raised to 1100513 in revision 318197. And, clock_nanosleep was MFC’d into 11-stable in-between the two, at revision 317618. So, not a precise match there, but >= 1100513 should be safe. Thanks! - Chris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJZWqkLAAoJEPFBDnXvoNg0CNYQAKm2JVIRz+FKgTG1ZLfnjIBC JODqRrSmJ0HiepN7ImMSebARzqbqaNERGRsROwxu9mpohMl7tQs8apANb+16dIXG 13Rc+DHTMEAZr2AB6EL7S0uaVtaT1obz7vEDccLHguEPSFrj6eydIeEZlMnuJxHV VdJLPKBRYQoZV23hWkTVkZngCHWWGtwXIs6eD2ZMLRn/rA7lMdexeGjMfqFdTsK/ pe2KJNIDfOYB04ahQGRe8aXxThRdoxMm/Fc+tqUpBUUu+fM3tW8u/PmRmHw+/7og yGhD+LsSr9oWKExduog/HOJy/RYNPXYLa9lyjD3SQLoKZ2seGkGgkRZbO5gdxB+y EEdEcokpR0sQ+p2QzisGCyl4JrEXv5wDXsQavUseJqn9yIYFVPRVVuVKp2Sfk4ig JtRqQghPY26n800/k0Tb0+zumvqrRIEnb0TJCRu9YFKtFCV1JpBrsfi3EFcYr1HC 7w2TkDHfiq6KyMTH7b/gvNjJjWOkqnkrGNy0nmFoonmym/adPpYYVD7ZNRbT/7LX RMoUP/d4txswb4/c9UlPKZ8VVqJEOLHG0ugw6pinOHdRQGqhxl+lm5WBEjzCt+kC o3iIGFaH0m4t6yjr9dWLDBW3ItrXx9LXv4WcFGd3bcUbKFCiAaEpRkHftQDvU8t7 LJ4BPHxNx129l5QUTuaW =sGH1 -----END PGP SIGNATURE-----
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