Hi Mike,
On Tue, Jan 14, 2014 at 05:45:51PM -0500, Mike Frysinger wrote:
> On Tuesday 14 January 2014 13:53:02 Baruch Siach wrote:
> > On Tue, Jan 14, 2014 at 05:46:50PM +0000, Pádraig Brady wrote:
> > > I noticed this issue from:
> > > http://permalink.gmane.org/gmane.comp.lib.uclibc.buildroot/73294
> > >
> > > I've not tested the following on uclibc, but does the attached patch fix
> > > it? (you just need to patch the m4/spawn_h.m4 file in coreutils to test
> > > this)
> >
> > I guess it should fix the problem, but it would be better to fix uClibc.
>
> unless POSIX explicitly states that the symbols be in -lc, i don't think
> uClibc is broken. i don't believe POSIX states that (if it does, please
> point
> out in the docs).
>
> keeping them in -lrt over -lc makes a bit of sense in my mind:
> - the POSIX docs label them as "ADVANCED REALTIME" (ok, ok, maybe i'm
> reaching here as what POSIX calls "realtime" is often not really "realtime"
> related)
> - these funcs are not common (that i've seen). that means always
> mapping
> them in via libc.so is useless overhead. better to penalize the uncommon.
So this is a NACK for my patch moving posix_spawn to -lc. I'll copy this in
reply to the patch on the uclibc list.
Pádraig, your patch fixes the build problem of coreutils by correctly
detecting the -lrt dependency of posix_spawn.
Thanks,
baruch
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