+
+ # Special case for Makefile.PL that uses
+ # Module::Build::Compat. PREFIX should not be passed
+ # for those; it already installs into /usr by default.
+ my $makefile=$this->get_sourcepath("Makefile");
+ if (system(qq{grep -q "generated automatically by MakeMaker" $makefile}) != 0) {
+ $this->SUPER::install($destdir, @_);
+ }
+ else {
+ $this->SUPER::install($destdir, "PREFIX=/usr", @_);
+ }