Re: OS independent build results

[Ralf Wildenhues]

* Andreas Otto wrote on Sun, Nov 01, 2009 at 12:17:05PM CET:
>   this add a new target ".vpath_hook" to the build environment and this target
>   copy the files/directories listed in "VPATH_FILES" from the src into the
>   build environment. the "copy" is necessary because tools like "JAR"
>   expect the files in the "build" directory. ".vpath_hook" is the FIRST
>   target in BUILT_SOURCES to garantee that the copy is done before
>   any furter action are done.

Note that parallel make (make -jN) does not guarantee that .vpath_hook
is completed before the other BUILT_SOURCES are updated.  Not sure if
you need that, but if you do, you could make the former a prerequisite
of the latter ones.

Cheers,
Ralf