On 06/14/2016 02:52 AM, Peter Maydell wrote: > In commit 4d330cee37a21 a new hostdep.h file was added, with the intent > that host architectures which needed one could provide it, and the > build system would automatically fall back to a generic version if > there was no version for the host architecture. Although this works, > it has a flaw: if a subsequent commit switches an architecture from > "uses generic/hostdep.h" to "uses its own hostdep.h" nothing in the > makefile dependencies notices this and so doing a rebuild without > a manual 'make clean' will fail. > > So we drop the idea of having a 'generic' version in favour of > every architecture we support having its own hostdep.h, even if > it doesn't have anything in it. (There are only thirteen of these.) > > If the dependency files claim that an object file depends on a > nonexistent file, our dependency system means that make will > rebuild the object file, and regenerate the dependencies in > the process. So moving between trees prior to this commit and > trees after this commit works without requiring a 'make clean'. > > Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> > ---
Reviewed-by: Richard Henderson <r...@twiddle.net> r~
