"signal()" in RTEMS unresolved

[Joel Sherrill]

On Tue, Aug 22, 2023 at 4:46 PM Brett Sterling <brett.sterling at odysseysr.com>
wrote:

> Hello all,
>
> My code calls the 'signal()' function.  There are no errors during
> compile, but when it goes to the link stage, it gets an error:
>
> : in function `Encore::Framework::Component::Component(unsigned int,
> double)':
> Component.cpp:(.text+0x1338): undefined reference to `signal'
>

Did you build with POSIX enabled? POSIX signals are part of the small
amount of POSIX functionality that is covered by that switch.

>
> I've seen the documentation that indicates the Posix method is to use
> 'sigaction()', but we're looking to use the standard C/C++ library
> functionality.  Based on the error, I'm guessing that either
>
>    1. I'm not linking with the correct libraries OR
>    2. I need to specify some sort of switch when building the RTEMS tools
>    (in order to include the 'signal()' function in the libraries).
>
> I've searched 'the web' but haven't come up with anything that indicates
> where I'm going wrong.
>
> Any pointers here would be appreciated :-)
>
> Thanks!
> Brett
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