On 02/04/2015 09:55 AM, Huy Cong Vu wrote:
> Hello everyone,
> I recently try to run an application compiled in native skin of Xenomai 3.
> When trying to run the binary, these line appeared:
> WARNING: [main] no skin detected in program
> BUG: [main] initialization failed, EINVAL
> I know that this is a cooperplate_init() warning when trying to initialize
> native skin, but I don't understand the reason why:
> if (pvlist_empty(&skins)){
> warning("no skin detected in program");
> ret = -EINVAL;
> goto fail;
> }
It seems that your application was not linked against libalchemy.so.
When API libraries are properly linked in, internal constructor routines
populate this list. POSIX support is built-in within the Cobalt
interface, so it won't appear here though.
You may want to check this with ldd.
> In my main(), there are still native API calls:
> rt_print_auto_init(1);
> rt_task_spawn(...);
> rt_task_join(...);
> rt_task_delete(...);
> with mlockall also just to make sure, even I know that is pre-initialize
> since Xenomai 2.6.
> I have xenomai-3-next patched on linux-3.14.17, here are my compilation
> flags:
> cflags:
> xeno-config --alchemy --cflags
> xeno-config --rtdm --cflags
> ldflags:
> xeno-config --alchemy --ldflags
> xeno-config --rtdm --ldflags
You should not mention --rtdm for userland apps, this is useless for
Xenomai 3. This has been kept for compatibility purpose with existing
application Makefiles targeting Xenomai 2.x.
>
> This issue is not reproduced with posix skin, I know that there are a
> mechanism change in the way Xenomai invoke function calls other than POSIX
> (alchemy, vxworks...):
> https://xenomai.org//migrating-from-xenomai-2-x-to-3-x/#Copperplate_auto-initialization
>
> Is this related with my issue? Is there anything I should add to my
> initialization process that I didn't know about?
> Thanks for your time,
>
Check lib/alchemy/testsuite for a working Makefile you could derive
yours from.
--
Philippe.
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