+sub do_make {
+ my $this=shift;
+
+ # Remove unavailable jobserver options from MAKEFLAGS.
+ # Always clean MAKEFLAGS from unavailable jobserver options. If parallel
+ # is enabled, do more extensive clean up from all job control specific
+ # options
+ my ($status, $makeflags) = get_make_jobserver_status();
+ if ($status eq "jobserver-unavailable" || defined $this->get_parallel()) {
+ if (defined $makeflags) {
+ $ENV{MAKEFLAGS} = $makeflags;
+ }
+ else {
+ delete $ENV{MAKEFLAGS} if exists $ENV{MAKEFLAGS};
+ }
+ }
+
+ # Start a new jobserver if parallel building was requested
+ if (defined $this->get_parallel()) {
+ unshift @_, "-j" . ($this->get_parallel() > 1 ? $this->get_parallel() : 1);
+ }
+
+ $this->doit_in_builddir($this->{makecmd}, @_);
+}
+