uaa@framboise:~/strfry$ gmake

perl golpe/gen-fbs.pl

warning:

/home/uaa/strfry/fbs/nostr-index.fbs:22: 15: warning: field names should be lowercase snake_case, got: tagsGeneral

/home/uaa/strfry/fbs/nostr-index.fbs:23: 15: warning: field names should be lowercase snake_case, got: tagsFixed32

perl golpe/gen-golpe.h.pl

Can't locate Template.pm in @INC (you may need to install the Template module) (@INC contains: /usr/local/libdata/perl5/site_perl/amd64-openbsd /usr/local/libdata/perl5/site_perl /usr/libdata/perl5/amd64-openbsd /usr/libdata/perl5) at golpe/gen-golpe.h.pl line 6.

BEGIN failed--compilation aborted at golpe/gen-golpe.h.pl line 6.

gmake: *** [golpe/rules.mk:45: build/golpe.h] エラー 2

uaa@framboise:~/strfry$

pkg_add flatbuffersでこれなので、多分perlの必要なモジュールとかが足りてないんだと思う。OpenBSD上だと気合い入れていじらないと動かせないかも（素直にUbuntu/Debian使っとけってことですね）。