Running 'git grep' shows several scripts in anjuta use #!/usr/bin/perl.

$ git grep /usr/bin/perl
libanjuta/interfaces/anjuta-idl-compiler.pl:#!/usr/bin/perl -w
plugins/tools/scripts/find-fixmes.pl:#!/usr/bin/perl
plugins/tools/scripts/prepare-changelog.pl:#!/usr/bin/perl -w
plugins/tools/scripts/translation-status.pl:#!/usr/bin/perl
po/status.pl:#!/usr/bin/perl

It is better to use '#!/usr/bin/env perl' to avoid hardcoding the path to perl in scripts because some systems install perl in different places. For example, FreeBSD uses /usr/local/bin/perl by default. It used to include a /usr/bin/perl symlink for compatibility, but the symlink was removed 2 years ago.

The only script I found that caused build failure on FreeBSD was plugins/tools/scripts/find-fixmes.pl. I was not sure whether the usage of #!/usr/bin/perl in other scripts can cause build problems.