From: Eugene Syromyatnikov <evgsyr@gmail.com>
To: Stefan Puiu <stefan.puiu@gmail.com>
Cc: Alejandro Colomar <alx.manpages@gmail.com>,
Michael Kerrisk <mtk.manpages@gmail.com>,
lnx-man <linux-man@vger.kernel.org>
Subject: Re: [PATCH 00/45] Add LIBRARY section (based on FreeBSD manual pages)
Date: Tue, 14 Sep 2021 10:30:43 +0200 [thread overview]
Message-ID: <CACGkJdt0Yg2i-R3dkuANSqKoDu0oCk7bz43tAP4dojTHeCL6Gg@mail.gmail.com> (raw)
In-Reply-To: <CACKs7VA=y2t3iGjKyzp-p1tt1hW3YsD6LMCqn0rotttOvk4pfw@mail.gmail.com>
On Tue, Sep 14, 2021 at 2:53 AM Stefan Puiu <stefan.puiu@gmail.com> wrote:
> Not sure what value "libc, -lc" to the man pages. I think having a
> standardized section for functions that require libraries other than
> libc is fine, so you remember when you need -lm or -lrt (although IIRC
> recently a few of these were folded in libc, at least for glibc). But
> -lc feels kind of redundant. Does that mean you need to add -lc in
> your Makefile? Some people might interpret it as such.
Isn't it covered by the
> I think no library section = no special library required might be clearer.
>
> Also, on FreeBSD it's quite obvious you're talking about THE library.
> But on Linux, you have glibc, musl libc, diet libc... Is the plan to
> document requirements for all of these? E.g link with -lm on musl
> libc, no special flags on glibc..?
I think, the split is codified in the standards[1][2][3][4][5] (so,
-lm/-lrt are expected to be supported by the compiler, per my
understanding, and providing the necessary -l* option will always
work, because it's codified in C standard, contrary to not providing
one) and the fact that glibc provides libm/librt symbols in -lc is
more akin to a bit of convenience (for application or glibc
developers, not sure which ones), and not something one should rely
upon.
[1] https://refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/libc.html
[2] https://refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/libm.html
[3] https://refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/libpthread.html
[4] https://refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/libdl.html
[5] https://refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/librt.html
--
Eugene Syromyatnikov
mailto:evgsyr@gmail.com
xmpp:esyr@jabber.{ru|org}
next prev parent reply other threads:[~2021-09-14 8:30 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-11 16:00 [PATCH 00/45] Add LIBRARY section (based on FreeBSD manual pages) Alejandro Colomar
2021-09-11 16:00 ` [PATCH 01/45] _exit.2: Add LIBRARY section Alejandro Colomar
2021-09-11 16:00 ` [PATCH 02/45] keyctl.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 03/45] gamma.3: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 04/45] request_key.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 05/45] write.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 06/45] wait4.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 07/45] wait.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 08/45] vmsplice.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 09/45] vm86.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 10/45] vhangup.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 11/45] vfork.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 12/45] utimensat.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 13/45] utime.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 14/45] ustat.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 15/45] userfaultfd.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 16/45] unshare.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 17/45] uname.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 18/45] umount.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 19/45] tkill.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 21/45] unlink.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 22/45] umask.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 23/45] truncate.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 24/45] timer_getoverrun.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 25/45] timerfd_create.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 26/45] timer_delete.2: " Alejandro Colomar
2021-09-11 16:00 ` [PATCH 27/45] timer_create.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 28/45] time.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 29/45] tee.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 30/45] syslog.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 31/45] sysinfo.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 32/45] syscall.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 33/45] sync_file_range.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 34/45] sync.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 35/45] symlink.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 36/45] swapon.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 37/45] subpage_prot.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 38/45] statx.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 39/45] stat.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 40/45] spu_run.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 41/45] spu_create.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 42/45] splice.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 43/45] socketpair.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 44/45] socketcall.2: " Alejandro Colomar
2021-09-11 16:01 ` [PATCH 45/45] sigwaitinfo.2: " Alejandro Colomar
2021-09-11 18:29 ` [PATCH 00/45] Add LIBRARY section (based on FreeBSD manual pages) Eugene Syromyatnikov
2021-09-11 18:40 ` Alejandro Colomar (man-pages)
2021-09-11 22:24 ` Eugene Syromyatnikov
2021-09-11 22:37 ` Alejandro Colomar (man-pages)
2021-09-13 18:42 ` Stefan Puiu
2021-09-14 8:30 ` Eugene Syromyatnikov [this message]
2021-09-14 8:32 ` Eugene Syromyatnikov
2021-09-15 20:20 ` Alejandro Colomar (man-pages)
2021-09-17 8:12 ` Stefan Puiu
2021-09-17 8:21 ` Florian Weimer
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