Date: Fri, 8 Jun 2012 20:04:47 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Jan Sieka <jps@semihalf.com> Cc: Ian Lepore <freebsd@damnhippie.dyndns.org>, freebsd-current@freebsd.org, gjb@semihalf.com, Rafal Jaworowski <raj@semihalf.com> Subject: Re: How to add symbol to be exported in lib/libc/arm/Symbol.map Message-ID: <20120608170447.GH85127@deviant.kiev.zoral.com.ua> In-Reply-To: <4FD1F53D.4030409@semihalf.com> References: <4FD1F53D.4030409@semihalf.com>
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--AeHkbrJcO8giN/MO Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jun 08, 2012 at 02:51:09PM +0200, Jan Sieka wrote: > Hello group! >=20 > I have a few questions regarding adding symbols to > lib/libc/<arch>/Symbol.map, so that function signatures are exported: > - what are the conventions regarding putting symbols in FBSD_X.Y or > FBSDprivate_X.Y sections of the aforementioned files? FBSD_X.Y are for public interfaces, i.e. non-system code is supposed to link to symbols from that versions. FBSDprivate is for exclusive base system use (so to say). We do not guarantee ABI stability for private. > - when it is necessary to bump X.Y numbers? Currently, it is done when major branch is created. > - what is the difference between FBSD_X.Y and FBSDprivate_X.Y sections? This is a repeat. >=20 > The above questions arose from the discussion on freebsd-arm@ > (http://lists.freebsd.org/pipermail/freebsd-arm/2012-June/003555.html) > which concerns fixing Perl on ARM. The fix is to add __flt_rounds > function signature to lib/libc/arm/Symbols.map. Regarding this fix it > appears (after Symbols.map files analysis and checking their SVN > history) that adding this symbol is just a bug fix and should be put to > FBSD_1.0 section without incrementing numbers. But I don't have more > in-depth explanation so sending this email. No, since you are adding it in the CURRENT-10 timeframe, it goes to FBSD_1.3. >=20 > Anyone can comment on the above questions or point to some documentation > (I've searched Developer's Handbook and Internet but found nothing)? http://people.freebsd.org/~deischen/symver/freebsd_versioning.txt In fact, I do not like this policy, and would some day write a proposal, which essentially requests creation of separate version for each ABI change. But what is referenced is the current accepted project policy. --AeHkbrJcO8giN/MO Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAk/SMK8ACgkQC3+MBN1Mb4io0gCfZCkvXfL/2wRasZi5Ohj178XF V2QAoL3eK86xpkjTNeoER16wAncXPyNU =NS07 -----END PGP SIGNATURE----- --AeHkbrJcO8giN/MO--
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