%define __find_requires @RPMCONFIGDIR@/find-perl-requires
%define __find_provides @RPMCONFIGDIR@/find-perl-provides
-%define perl_sitelib %(eval "`perl -V:installsitelib`"; echo $installsitelib)
-%define perl_sitearch %(eval "`perl -V:installsitearch`"; echo $installsitearch)
-%define perl_archlib %(eval "`perl -V:installarchlib`"; echo $installarchlib)
-%define perl_privlib %(eval "`perl -V:installprivlib`"; echo $installprivlib)
+%define perl_privlib %(eval "`%{__perl} -V:installprivlib`"; echo $installprivlib)
+%define perl_archlib %(eval "`%{__perl} -V:installarchlib`"; echo $installarchlib)
+%define perl_vendorlib %(eval "`%{__perl} -V:installvendorlib`"; echo $installvendorlib)
+%define perl_vendorarch %(eval "`%{__perl} -V:installvendorarch`"; echo $installvendorarch)
+%define perl_sitelib %(eval "`%{__perl} -V:installsitelib`"; echo $installsitelib)
+%define perl_sitearch %(eval "`%{__perl} -V:installsitearch`"; echo $installsitearch)
+
+# fallback for Ra, where installvendor* are undefined by default
+%{!?perl_vendorlib:%define perl_vendorlib %{perl_sitelib}}
+%{!?perl_vendorarch:%define perl_vendorarch %{perl_sitearch}}