Re: [Qemu-devel] [PATCH] minikconf: do not include variables from MINIKCONF_ARGS in config-all-devices.mak

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 6/25/19 10:13 AM, Paolo Bonzini wrote:
> When minikconf writes config-devices.mak, it includes all variables including
> those from MINIKCONF_ARGS.  This causes values from config-host.mak to "stick" to
> the ones used in generating config-devices.mak, because config-devices.mak is
> included after config-host.mak.  Avoid this by omitting assignments coming
> from the command line in the output of minikconf.
> 
> Reported-by: Christophe de Dinechin <cdupontd@redhat.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>  scripts/minikconf.py | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/scripts/minikconf.py b/scripts/minikconf.py
> index 0ffc6c38da..3109a81db7 100644
> --- a/scripts/minikconf.py
> +++ b/scripts/minikconf.py
> @@ -688,11 +688,13 @@ if __name__ == '__main__':
>  
>      data = KconfigData(mode)
>      parser = KconfigParser(data)
> +    external_vars = set()
>      for arg in argv[3:]:
>          m = re.match(r'^(CONFIG_[A-Z0-9_]+)=([yn]?)$', arg)
>          if m is not None:
>              name, value = m.groups()
>              parser.do_assignment(name, value == 'y')
> +            external_vars.add(name[7:])
>          else:
>              fp = open(arg, 'r')
>              parser.parse_file(fp)
> @@ -700,7 +702,8 @@ if __name__ == '__main__':
>  
>      config = data.compute_config()
>      for key in sorted(config.keys()):
> -        print ('CONFIG_%s=%s' % (key, ('y' if config[key] else 'n')))
> +        if key not in external_vars:
> +            print ('CONFIG_%s=%s' % (key, ('y' if config[key] else 'n')))
>  
>      deps = open(argv[2], 'w')
>      for fname in data.previously_included:
>