H there, On a Slackware64-current I can build po4a against perl 5.16 but not against perl 5.18. Here is output of the build: Created MYMETA.yml and MYMETA.json Creating new 'Build' script for 'po4a' version '0.44' Starting ACTION_build Starting ACTION_code Starting ACTION_config_data Finished ACTION_config_data Finished ACTION_code Starting ACTION_docs Starting ACTION_manpages Finished ACTION_manpages Starting ACTION_html Finished ACTION_html Finished ACTION_docs Starting ACTION_distmeta Module::Build was not found in configure_requires! Adding it now automatically as: configure_requires => { 'Module::Build' => 0.40 } Created META.yml and META.json Finished ACTION_distmeta Starting ACTION_man Starting ACTION_manpo 'tempfile' can't be called as a method at lib/Locale/Po4a/Po.pm line 575. Died at Po4aBuilder.pm line 177. In https://raw.github.com/git/git/master/Documentation/RelNotes/1.8.3.txt I've found this: * Recent versions of File::Temp (used by "git svn") started blowing up when its tempfile sub is called as a class method; updated the callsite to call it as a plain vanilla function to fix it. (merge eafc2dd hb/git-pm-tempfile later to maint). So I guess po4a *could have* a similar problem but my absolute ignorance of perl doesn't allow me to investigate further, let alone propose a patch :( I also tried to find a clue in: http://search.cpan.org/dist/perl-5.18.0/pod/perldelta.pod But to no avail.