Date: Wed, 14 Jun 2017 14:21:26 -0500 From: Lewis Donzis <lew@perftech.com> To: Konstantin Belousov <kostikbel@gmail.com> Cc: Jilles Tjoelker <jilles@stack.nl>, Alexander Kabaev <kabaev@gmail.com>, deischen@freebsd.org, freebsd-arch@freebsd.org Subject: Re: mq on kqueue broken after upgrade to FreeBSD 11 Message-ID: <1BFDEE3C-0621-43F4-82AB-BB030F00F39D@perftech.com> In-Reply-To: <20170614141703.GN2088@kib.kiev.ua> References: <8A6CD0D3-C4D5-40DF-B2AD-4C454CC88AD1@perftech.com> <20160930094544.GP38409@kib.kiev.ua> <19A6EEAA-C68E-4DAD-B98F-4D904734BD8B@perftech.com> <20160930152006.GS38409@kib.kiev.ua> <20160930184418.1047afc2@kan> <20161001092515.GW38409@kib.kiev.ua> <20161001201655.GA91457@stack.nl> <20161001210722.GC38409@kib.kiev.ua> <C6959811-CC61-4366-99A0-717ECDBDD998@perftech.com> <20170614141703.GN2088@kib.kiev.ua>
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Ah, yes, I see that it's in 11.0-STABLE, but I suppose it's not in = 11.0-RELEASE. Thanks for that, we=E2=80=99ll either update to STABLE or just wait = another month for 11.1-RELEASE. Thanks, lew > On Jun 14, 2017, at 9:17 AM, Konstantin Belousov <kostikbel@gmail.com> = wrote: >=20 > On Wed, Jun 14, 2017 at 08:38:35AM -0500, Lewis Donzis wrote: >> We had a discussion last October about __mq_oshandle() no longer = being visible in FreeBSD 11, and I think the result was that it should = be put back in the Symbol.map. There was also some discussion about = renaming it. >>=20 >> At the moment (11.0-RELEASE-p10), the function is still missing from = librt.so.1, but is present in librt.a. What seems odd is that running = ???make??? in /usr/src/lib/librt produces a librt.so.1 that *does* have = this function. >>=20 >> I???m curious as to how it???s possible that librt.a has the function = but the released librt.so.1 does not have it, yet rebuilding from source = does include the function? >=20 > The versioning on librt was broken some time ago, but I think it was = fixed > before 11.0. Anyway, it works for me in HEAD and stable/11. > librt.a, as any static library, does not support versioning so any = symbol > from the library can be accessed by linked code. This is one of the = reasons > why static linking is discouraged. >=20 > It was decided that a symbol in the app-useable namespace must be = officially > exported from librt, and we export mq_getfd_np() for your purposes. = Again, > I am not sure was it done before 11.0 or after, but the symbol is = definitely > present in stable/11 and in upcoming 11.1.
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