Re: Meson can't recover from deletion of generated QAPI file(s)

[Philippe Mathieu-Daudé]

On 9/9/20 2:37 PM, Markus Armbruster wrote:
> Watch this:
> 
>     $ rm qapi/qapi-types-error.h 
>     $ make
>     Generating qemu-version.h with a meson_exe.py custom command
>     Compiling C object qom/libqom.fa.p/object_interfaces.c.o
>     In file included from ../qom/object_interfaces.c:4:
>     /work/armbru/qemu/include/qapi/error.h:275:10: fatal error: 
> qapi/qapi-types-error.h: No such file or directory
>       275 | #include "qapi/qapi-types-error.h"
>           |          ^~~~~~~~~~~~~~~~~~~~~~~~~
>     compilation terminated.
>     make: *** [Makefile.ninja:348: qom/libqom.fa.p/object_interfaces.c.o] 
> Error 1
> 
> To recover, I have to run qapi-gen.py manually and exactly right, or
> blow away the build tree and start over.
> 
> The old build system did what a build system should: it remade the files
> that are missing or out of date.
> 
> I'm still too clueless about Meson to debug this, but I hope I can learn
> from watching you fix it.

Maybe related:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg736135.html
and later:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg738777.html