diff -up ./Makefile.PL.tv ./Makefile.PL
--- ./Makefile.PL.tv	2013-05-29 11:40:02.283361866 +0200
+++ ./Makefile.PL	2013-05-29 11:39:54.287746796 +0200
@@ -5,7 +5,8 @@ use ExtUtils::MakeMaker;
 use Getopt::Long;
 
 #- require at least rpm 4.2
-my $rpm_version = `rpm --version` =~ /version ([0-9.]+)(?:-beta.*)$/ ? version->new("v$1") : ();
+my $rpm_version = `LC_ALL=C rpm --version` =~ /version ([0-9.]+)(?:-beta.*)?$/ ? version->new("v$1") : ();
+warn ">> $rpm_version\n";
 $rpm_version ge 4.8.0
     or die <<BARF;
 Unable to build RPM4 with too old (or undetected) rpm version $rpm_version