No uuid-ossp extension

[hooopo]

create EXTENSION "uuid-ossp";
ERROR:  could not open extension control file "/Users/hooopo/.pgenv/pgsql-10.1/share/extension/uuid-ossp.control": No such file or directory

it seems no contrib module installed?

my pg version 10.1；max os majave

[fluca1978]

Not really true.
When you build the system does essentially a make world which results in:
PostgreSQL, contrib, and documentation installation complete.
and you can check it by adding another extension, as an example pgcrypto.

The problem with uuid-ossp is that it must be specuified at configure time: https://www.postgresql.org/docs/10/uuid-ossp.html#id-1.11.7.54.5
with the option

% configure --help
...
 --with-uuid=LIB         build contrib/uuid-ossp using LIB (bsd,e2fs,ossp)
  --with-ossp-uuid        obsolete spelling of --with-uuid=ossp

...

You can use pgenv config to specify configure flags and rebuild it again.