Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Thu, 16 Jun 2011 11:21:17 -0500

Hi Benjamin,

On 2011-06-15 Benjamin Franksen wrote:
> Am Freitag, 10. Juni 2011, um 17:48:09 schrieben Sie:
> > My guess is that for this vxWorks.h problem, the C preprocessor
> > sees a line starting with "%%" and concludes it is not a
> > preprocessor command, hence the bad substitution; it would
> > normally understand an include command and know not to
> > substitute within the angle brackets.  If this is the case, I
> > think another workaround would be to use the SNL block escape
> > syntax instead of the single line syntax:
> >
> >   %{
> >     #include <vxWorks.h>
> >   }%
> 
> Yes, this should work (with the "#" as first character on the line).

There could be subtle semantic differences using this syntax, as any macros 
defined by the vxWorks.h file will get expanded out in the SNL program before 
it reaches the SNL compiler whereas the old version didn't expand them until 
afterwards.  I tried this last week and snc does correctly ignore the expanded 
header file, but I wouldn't really recommend it.

I committed the -DvxWorks=vxWorks change to the 3.14 branch last Friday.

- Andrew
-- 
Optimization is the process of taking something that works and
replacing it with something that almost works, but costs less.
-- Roger Needham

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System