RES: How can i install contrib modules in pg11 via source

> 
> If so I can tell you how I do it in Linux and you can make the
> appropriate translations to BSD.
> 
> 1) cd to contrib/hstore/
> 
> 2) make
> 
> 3) sudo make install
> 
> 4) In psql CREATE EXTENSION hstore;

Well, I allways install via pkg and I didn't find the contrib folder  (: 

Now, the follow error message occur:

root@pg11:/pg11/postgresql-11beta2/contrib/hstore # make
make: "/pg11/postgresql-11beta2/contrib/hstore/Makefile" line 16: Need an
operator
make: "/pg11/postgresql-11beta2/contrib/hstore/Makefile" line 19: Could not
find
make: "/pg11/postgresql-11beta2/contrib/hstore/Makefile" line 20: Need an
operator
make: "../../src/../../src/Makefile.global" line 44: Need an operator
make: "../../src/../../src/Makefile.global" line 49: Need an operator
make: "../../src/../../src/Makefile.global" line 51: Need an operator
make: "../../src/../../src/Makefile.global" line 52: Missing dependency
operator
make: "../../src/../../src/Makefile.global" line 55: Need an operator
make: "../../src/../../src/Makefile.global" line 58: Need an operator
make: "../../src/../../src/Makefile.global" line 59: Need an operator
make: "../../src/../../src/Makefile.global" line 60: Need an operator
make: "../../src/../../src/Makefile.global" line 65: Missing dependency
operator
make: "../../src/../../src/Makefile.global" line 68: Need an operator
make: "../../src/../../src/Makefile.global" line 72: Need an operator
make: "../../src/../../src/Makefile.global" line 73: Need an operator
make: "../../src/../../src/Makefile.global" line 93: Need an operator
make: "../../src/../../src/Makefile.global" line 105: Need an operator
make: "../../src/../../src/Makefile.global" line 106: Need an operator
make: "../../src/../../src/Makefile.global" line 108: Need an operator
make: "../../src/../../src/Makefile.global" line 109: Need an operator
make: "../../src/../../src/Makefile.global" line 112: Need an operator
make: "../../src/../../src/Makefile.global" line 113: Need an operator
make: "../../src/../../src/Makefile.global" line 115: Need an operator
make: "../../src/../../src/Makefile.global" line 116: Need an operator
make: "../../src/../../src/Makefile.global" line 121: Need an operator
make: "../../src/../../src/Makefile.global" line 122: Need an operator
make: "../../src/../../src/Makefile.global" line 124: Need an operator
make: "../../src/../../src/Makefile.global" line 125: Need an operator
make: "../../src/../../src/Makefile.global" line 130: Need an operator
make: "../../src/../../src/Makefile.global" line 131: Need an operator
make: "../../src/../../src/Makefile.global" line 133: Need an operator
make: "../../src/../../src/Makefile.global" line 134: Need an operator
make: "../../src/../../src/Makefile.global" line 139: Need an operator
make: "../../src/../../src/Makefile.global" line 140: Need an operator
make: "../../src/../../src/Makefile.global" line 142: Need an operator
make: "../../src/../../src/Makefile.global" line 143: Need an operator
make: "../../src/../../src/Makefile.global" line 149: Need an operator
make: "../../src/../../src/Makefile.global" line 152: Need an operator
...