Compiling pg_tde into PostgreSQL 18.3 from source

Hello,

We’re a software producer in the Library Management Market and compile PostgreSQL on SuSE Linux Enterprise from source. In the actual used version (16.5) we compiled pg_tde by git cloning it to postgresql-16.5/contrib/pg_tde, running ./configure and gmake there.

It seems that this path does not work anymore for 18.3. Am I wrong? If so, please point me to the installation instruction from source.

Thanks