> On 2 Feb 2023, at 05:46, Sam James wrote:
>
> dup2 requires a include. Fixes the following when diffing
> config.log
> when testing with a stricter compiler:
> ```
> -warning: call to undeclared function 'dup2'; ISO C99 and later do not
> support implicit function declarations [-Wimplicit-
dup2 requires a include. Fixes the following when diffing config.log
when testing with a stricter compiler:
```
-warning: call to undeclared function 'dup2'; ISO C99 and later do not support
implicit function declarations [-Wimplicit-function-declaration]
+error: call to undeclared function 'dup
