configure: preserve qemu-ga variables
commit954ed68f9934a3e08f904acb93ce168505995e95
authorPaolo Bonzini <pbonzini@redhat.com>
Wed, 12 Oct 2022 09:35:17 +0000 (12 11:35 +0200)
committerPaolo Bonzini <pbonzini@redhat.com>
Thu, 5 Jan 2023 23:50:32 +0000 (6 00:50 +0100)
treed7ba88ddd1f2732c853913a17e2ad84b354535ad
parentf9c77801f4992fae99392ccbb60596dfa1fcf04a
configure: preserve qemu-ga variables

Ensure that qemu-ga variables set at configure time are kept
later when the script is rerun.  For preserve_env to work,
the variables need to be empty so move the default values
to config-host.mak generation.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
configure