[Scons-users] [scons-users] Replacing Builder while perserving Scanner

[Dirk Bächle]

Hi,

On 15.06.2014 21:38, yangsc wrote:
>
> Hello,
>
> Now I have some '.input' files to be built to '.obj'-like targets. I 
> have written a build action function and replace the env's object builder:
>
> myBuilder = Builder(action     = mybuilder.MyBuilder,
>
>                                src_suffix = '.input',
>
>     emitter    = mybuilder.MyEmitter)
>
> env.Replace(BUILDERS = {'Object' : myBuilder})
>
> In '.input' files, there are some preprocessor directives as the 
> C-Preprocessor has: '#include', '#ifdef' etc. So I want to preserve 
> the default C-Scanner.
>
> But when I run the sconscript the default CScanner doesn't work at 
> all. I also tried replace 'CFILESUFFIX',' CPPSUFFIXES',' CXXFILESUFFIX' .
>
> So Is there some method can I *use the default C-Scanner* for .h 
> dependencies while *use my builder function to build the targets*?
>

please refer to the MAN page, in the section "Scanner objects" you'll 
find an example of how to add, or better: link, your scanner to the 
additional filename extension ".input". Note, that building targets and 
scanning source files are completely independent (well, almost) of each 
other...so you can build C/CPP targets and scan ".c"/".h"/".input" files 
at the same time.

Best regards,

Dirk

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