Re: [PULL v2 00/22] Build system + misc changes for 2020-10-16

[Paolo Bonzini]

On 17/10/20 15:09, Peter Maydell wrote:
> Traceback (most recent call last):
>   File "scripts/mtest2make.py", line 37, in <module>
>     introspect = json.load(sys.stdin)
>   File "/usr/lib/python3.6/json/__init__.py", line 299, in load
>     parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
>   File "/usr/lib/python3.6/json/__init__.py", line 354, in loads
>     return _default_decoder.decode(s)
>   File "/usr/lib/python3.6/json/decoder.py", line 339, in decode
>     obj, end = self.raw_decode(s, idx=_w(s, 0).end())
>   File "/usr/lib/python3.6/json/decoder.py", line 357, in raw_decode
>     raise JSONDecodeError("Expecting value", s, err.value) from None
> json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
> make: *** Deleting file 'Makefile.mtest'
> 
> followed by:
> 
> ERROR: Cannot find Ninja

The most likely cause is that the Makefile is forcing configure to rerun
because you don't have ninja in config-host.mak; this works (as shown by
the error) but only after mtest2make has barfed.  I can add a dependency
from Makefile.mtest to config-host.mak which technically isn't needed
but doesn't hurt.

OpenBSD and NetBSD call the ninja package "ninja-build" unlike FreeBSD.
 I'm sure I had used the right name but well I didn't.  I'll send a v3.

Paolo