[asterisk-dev] [Code Review] 4545: clang compiler warning: -Wunused-command-line-argument

[Matt Jordan]

> On March 27, 2015, 10:31 p.m., Matt Jordan wrote:
> > Why do we want to ignore unused-command-line-argument?
> > 
> > I'm not against it, just curious :-)
> 
> Diederik de Groot wrote:
>     Because it also checks all if the -I parameter is actually used. It will generate a waring for almost every file compiled because of CFLAGS comtains a number of these (for example libxml2) during the processing of the *.i files. I only suppressed this warning when generating these files, so not in general. Just undo the change in Makefile.rules and run in dev-mode to see the 'annoying' effect, for example:
>     [CCi] res_pjsip_registrar_expire.i -> res_pjsip_registrar_expire.o
>     clang: warning: argument unused during compilation: '-I /data/development/asterisk/asterisk-13-test/include'
>     clang: warning: argument unused during compilation: '-I /usr/include/libxml2'
>     [CCi] res_pjsip_rfc3326.i -> res_pjsip_rfc3326.o
>     clang: warning: argument unused during compilation: '-I /data/development/asterisk/asterisk-13-test/include'
>     clang: warning: argument unused during compilation: '-I /usr/include/libxml2'
>     clang: warning: argument unused during compilation: '-I /data/development/asterisk/asterisk-13-test/include'
>     clang: warning: argument unused during compilation: '-I /usr/include/libxml2'

That makes sense. Thanks for the explanation!


- Matt


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On March 27, 2015, 11:04 a.m., Diederik de Groot wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviewboard.asterisk.org/r/4545/
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> 
> (Updated March 27, 2015, 11:04 a.m.)
> 
> 
> Review request for Asterisk Developers.
> 
> 
> Bugs: ASTERISK-24917
>     https://issues.asterisk.org/jira/browse/ASTERISK-24917
> 
> 
> Repository: Asterisk
> 
> 
> Description
> -------
> 
> clang's static analyzer will throw quite a number warnings / errors during compilation, some of which can be very helpfull in finding corner-case bugs. clang compiler warning:-Wunused-command-line-argument
> 
> 
> Diffs
> -----
> 
>   /branches/13/Makefile.rules 433444 
> 
> Diff: https://reviewboard.asterisk.org/r/4545/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Diederik de Groot
> 
>

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