Bug#1017436: meson: deprecation warning when cross-compiling: foo_args in the [properties] section of the machine file is deprecated

[Simon McVittie]

Package: meson
Version: 0.63.1-1
Severity: minor

debcrossgen puts c_args, cpp_args, c_link_args and cpp_link_args in the
[properties] section of the cross-file that it generates, but recent
versions of Meson want this to be in the [built-in options] section
instead.