[PATCH weston] configure.ac: honour the wayland-scanner.pc

[Andrew Oakley]

On 10/02/15 14:42, Emil Velikov wrote:
> Currently we use the wayland-scanner executable as found with
> AC_PATH_PROG, and after that check the presence of wayland-scanner.pc
> 
> Even if the latter is pointing to another wayland-scanner we silently
> ignore it. Rework things to check for the relevant variable in the *.pc
> file first, and then fall back to checking via AC_PATH_PROG.

I'm not sure this works when cross compiling.  What you really want to
do is look for wayland-scanner on the build machine rather than the
target.  With these changes we will try and run wayland-scanner for the
target (assuming it has been built).

It doesn't look like there is currently any way of using the m4 macros
shipped with pkg-config to run the right one.

For now I think it is better to just look in PATH, although getting the
feature into the pkg-config m4 scripts and then using it would be good
in future.