Re: [Discuss-gnuradio] Clarification

[Martin Braun]

That's normal, make will recompile every time it sees a change in the file, regardless how small.

A useful tool when compiling often is ccache. Check it out!

There are targets for swig, but when I need a swig recompile I usually clear the swig folder from the build dir and call make again. That will keep the object files from the lib/ compilation around and only rebuild swig components.

M

On 9 Aug 2014 04:26, "奕佑" <address@hidden> wrote:

Hello,

I noticed that even I add a space in c++. make will recompile it. Is there any command to fore it to rebuild swing or just clean swing and then doing "make" will compilation swig ?

Jeff Guo

2014-08-08 22:09 GMT+08:00 Martin Braun <address@hidden>:

On 08/08/2014 03:25 PM, Tom Rondeau wrote:
>     I also ran into this problem that SWIG files aren't generated again when
>     I change a block interface in a header from "include/" directory. I
>     always have to make clean when I do that in order to successfully
>     compile. Can it be easily corrected by editing cmake files?
>
>     Piotr Krysik
>
> Are you guys sure about that behavior? Any change to an include file
> that's referenced by SWIG (if you're using gr_modtool to add new blocks,
> then this is always true), then any change, even just adding a space, to
> the public header file will trigger a rerun of swig. You should /not/
> have to run "make clean" ever time you update your header file.

Thanks -- I was thinking the same lines and starting to doubt myself.

> In fact, I often find this problematic if, for instance, I accidentally
> save a silly change in block.h that launches a rebuild of everything.

Quick tip to those who don't know: We have build targets for C++ only,
so you can do

$ make gnuradio-MODULENAME

to only run the C++ compilation and skip swig. Useful for fast iterating
when debugging with tests.

M

> If you're honestly seeing this happen, we'll definitely try to track
> down the reason why.
>
> Tom
>
>
>

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