Re: Fwd: sed porting trouble

[Eric Blake]

On 10/05/2010 02:35 PM, Bruno Haible wrote:
> Thanks; this is good and would solve half of the problem. But an expansion
> that contains #if and #pragma would also collide with 'make' syntax, as
> explained in
>    <http://lists.gnu.org/archive/html/bug-gnulib/2008-10/msg00300.html>.

Maybe we're thinking about this wrong.  We already use sed's r command 
to inline the body of a secondary file.  So, what if, instead of trying 
to pass # through AC_SUBST, automake, and make, we instead just build 
the minimal 4-liner file, parallel to $(CXXDEFS_H), $(ARG_NONNULL_H), 
and $(WARN_ON_USE_H), and use sed's r command to pull it in at the right 
place.

Then, you're back to a one-liner solution in the *.in.h files, which 
expands to the appropriate number of lines in the installed replacement 
header.

--
Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org