doc: clarify where to find pg_type_d.h (PG 11+) and pg_type.h

These files are in compiled directories and install directories.

Reported-by: [email protected]
Discussion: https://postgr.es/m/160379609706.24746.7506163279454026608@wrigleys.postgresql.org

Backpatch-through: 9.5

diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml
index cefe355c95a3cdc26f46a5105704d818a09bc433..622d21334331edcb3aa8f024d14d2447efdd18da 100644 (file)
--- a/doc/src/sgml/libpq.sgml
+++ b/doc/src/sgml/libpq.sgml
@@ -3661,8 +3661,8 @@ Oid PQftype(const PGresult *res,
        You can query the system table pg_type to
        obtain the names and properties of the various data types. The
        OIDs of the built-in data types are defined
-       in the file src/include/catalog/pg_type_d.h
-       in the source tree.
+       in the file include/catalog/pg_type_d.h
+       in the compiled source directory and install directory.