Created attachment 226326 [details]
www/firefox-esr: do not use gnutar over tar
archivers/star installs a binary named gnutar which is not
sufficiently GNU tar compatible to work with this build scipt.
Make sure the build scripts use /usr/bin/tar as a tar program
and not some random other command on the system.
This addresses an issue reported in bug #257063 where the newly
updated archivers/star port now installs a binary named gnutar.
As an additional measure against such surprises, archivers/star
will be changed to make installing a gnutar binary a non-default