Re: meson incremental build doesn't handle config file going away

[Thomas Huth]

On 18/02/2022 12.59, Peter Maydell wrote:
> I've noticed that the meson incremental build doesn't seem to
> cleanly handle a config file going away, as ppc64abi32-linux-user
> has recently. The build fails with:
>
> ../../meson.build:1941:2: ERROR: Failed to load
> /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/configs/targets/ppc64abi32-linux-user.mak:
> [Errno 2] No such file or directory:
> '/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/configs/targets/ppc64abi32-linux-user.mak'
>
> where line 1941 is
>    config_target += keyval.load('configs/targets' / target + '.mak')
>
> Rerunning make doesn't help; you have to manually re-run
> configure.
>
> Something here should figure out that "config file deleted" means
> it needs to rerun configure, I think.

That's weird, since the patch that removed that target actually change the 
configure script, too, so it should have re-run configure afterwards... or 
is that broken, too?

 Thomas