On 09/07/15 18:15, Robert Gifford wrote:
Afternoon everyone,
After baking my applications with rumpbake I am getting an undefined symbol
__cerror. This symbol *does not* prevent the application from being
executed with rumprun and from what I can tell, rumprun does not link in
anything that would satisfy that undefined function.
I have not updated to the latest tool chain patches that have been
discussed recently, so I have not tested to see if that would fix it.
I noticed this symbol when trying to link together my rumpbaked application
with some booter code from a platform I'm attempting to support. The
linking process was yelling at me about this undefined symbol.
Does anyone know of a rump component that defines this functions?
There is none. __cerror is a snippet of assembly used by NetBSD's libc
to store the error number from a system call into errno. Rump kernels
use a different system call method, and there is no __cerror.
In any case, __cerror should be system-internal, and no outside-of-libc
code should be using it.
Hmm, apparently there are a few routines in the libc we ship which try
to use __cerror. Are you by chance building something which calls
resumecontext()?
