[lttng-dev] Unable to include files in tracepoint provider header files

[Chidhu R]

Great. Thank you. That worked.

On Tue, Apr 28, 2015 at 11:27 AM, Mathieu Desnoyers <
mathieu.desnoyers at efficios.com> wrote:

> ------------------------------
>
> Hello,
>
> In the example (hello) provided, I tried to print complex data types
> instead of usual ints or floats. My header file looks like this.
>
> #undef TRACEPOINT_PROVIDER
> #define TRACEPOINT_PROVIDER hello_world
>
> #undef TRACEPOINT_INCLUDE
> #define TRACEPOINT_INCLUDE "./hello-tp.h"
>
> #if !defined(HELLO_TP_H) || defined(TRACEPOINT_HEADER_MULTI_READ)
> #define HELLO_TP_H
>
> #include <lttng/tracepoint.h>
>
> #include "myinc.h"
>
> TRACEPOINT_EVENT(
>     hello_world,
>     my_first_tracepoint,
>     TP_ARGS(
>         const char*, my_string_arg
>     ),
>     TP_FIELDS(
>         ctf_integer(int, my_string_field, atoi(my_string_arg))
>     )
> )
>
> My include file looks like this (myinc.h)
> typedef unsigned char uuid_t;
>
> However, when I try to compile it using, lttng-gen-tp, I am getting the
> following error.
>
> root at mvm236:~/heelo_prog# lttng-gen-tp hello-tp.tp
> In file included from ././hello-tp.h:13:0,
>                  from /usr/include/lttng/ust-tracepoint-event.h:740,
>                  from /usr/include/lttng/tracepoint-event.h:58,
>                  from hello-tp.h:56,
>                  from hello-tp.c:7:
> ././myinc.h:1:1: error: expected expression before ‘typedef’
>
> Whatever I try to include, I am getting this error.
>
> Can you please help.
>
> Try adding include guards around your header myinc.h, e.g.:
>
> #ifndef _MYINC_H
> #define _MYINC_H
> typedef unsigned char uuid_t;
> #endif
>
> It will ensure the header content does not get included multiple
> times by ust-tracepoint-event.h.
>
> Thanks,
>
> Mathieu
>
>
> -- Chid
>
> _______________________________________________
> lttng-dev mailing list
> lttng-dev at lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>
>
>
>
> --
> Mathieu Desnoyers
> EfficiOS Inc.
> http://www.efficios.com
>
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