[Scons-users] Fwd: Help with scons: warning: No dependency generated for file: stdlib.h

[Dirk Bächle]

Hi Jason,

On 08.04.2014 19:42, Jason Fritz wrote:

> Hi all,

>

> It seems the problem is related to turning on all warnings 

> (specifically the DependencyWarning class), but shouldn't that be a 

> safe "best practice"?

>


, you mean like everyone compiles his C/CPP files with "-Wall -Wextra 
-Werror" by default? ;)

I can understand that you'd really like to get rid of warnings, because 
they're often the path to full-grown errors and clutter the output. But 
there is a good reason to simply ignore these warnings in your case.
As you suggested, you could add the required include paths for the 
system headers to CPPPATH. Then the warnings would go away, but you'd 
have much larger update times because SCons now checks the system 
headers for changes too. Every time, even though they'll never 
change...well not *never*, but the chances for this are rather low.

So, both of your solutions are fine, you just have to pick the best 
tradeoff "no warnings" vs. "update speed" for your case.


Best regards,

Dirk