Re: [RFC PATCH 0/3] Automatically convert configure options to meson build options

[Paolo Bonzini]

On 13/09/20 12:15, 罗勇刚(Yonggang Luo) wrote:
> 
> I am confusing about this? we were converting configure to meson,
> and python is a force dependencies, why we need rewrite the script in
> Perl? If we wanna build qemu, the first thing we need to install is
> python+meson, so there is no need convert to Perl or bash script. And
> perl/bash will incur msys2/mingw user, the ideal way is we only 
> depends on python+meson to building qemu

The main issue is that the Python interpreter is any of python, python3,
python3.5.  Furthermore Meson's shebang python is not necessarily the
first "python3" in the path.

Perl is pretty much always "/usr/bin/env perl".  Note that Perl is
already needed to run "make check".  When/if it will be possible to only
build QEMU with python+meson there will be no configure script anymore,
so Perl is a reasonable choice for parsing the configure command line
options.  It wasn't my first choice, in fact this series includes a
Python implementation, but it does have some advantages.

Paolo