waf: Post-process object file

[Chris Johns]

On 10/11/2015 8:35 pm, Sebastian Huber wrote:
> Hello,
> 
> for the libbsd we have the problem that we expose a lot of symbols from
> the FreeBSD kernel space to the applications. There are several known
> conflicts, e.g. FreeBSD log() vs. standard math library log(). The
> current approach to solve this issue is to generate a file with lots of
> 
> #define xx _bsd_xx
> ...
> 
> defines to rename at C pre-processor level. This is however quite
> brittle and doesn't work in general. An alternative would be to
> post-process the kernel-space object files with something like this
> 
> objcopy --redefine-syms redefines.txt x.o
> 
> with a redefines.txt
> 
> xx=_bsd_xx
> ...
> 
> My question is now: how can I add this post-processing step to the waf
> based libbsd build system?
> 

Is this per object file or after the library has been made?

Chris