linux-kernel - Re: [PATCH 29/66] tools lib traceevent: Use str_error

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Date:	Tue, 12 Jul 2016 19:25:19 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [PATCH 29/66] tools lib traceevent: Use str_error_r()

On Tue, 12 Jul 2016 20:14:24 -0300
Arnaldo Carvalho de Melo <acme@...nel.org> wrote:

> Em Tue, Jul 12, 2016 at 07:11:08PM -0400, Steven Rostedt escreveu:
> > On Tue, 12 Jul 2016 19:40:04 -0300 Arnaldo Carvalho de Melo <acme@...nel.org> wrote:  
> > > To make it portable to non-glibc systems, that follow the XSI variant
> > > instead of the GNU specific one that gets in place when _GNU_SOURCE is
> > > defined.  
> 
> > >  #include "event-parse.h"
> > > @@ -6131,12 +6132,7 @@ int pevent_strerror(struct pevent *pevent __maybe_unused,
> > > +		str_error_r(errnum, buf, buflen);
> > >  		return 0;  
> > 
> > What library is used with this? When I port this over to trace-cmd
> > (which is still needed as I develop this there), it fails to build.
> > "undefined reference to str_error_r"  
> 
> tools/lib/str_error_r.c
> 
> Forgot about the out of tree copy :-\
> 

Yeah, we really need to make this into a real library. I haven't had
the time to do that. Hopefully in August I can talk with some people at
LinuxCon to see the best way to go about doing that.

Anyway, I may just take that file and port it to trace-cmd.

-- Steve