X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/ab6f35d83a350ead4eb12b59c4cbc050e48f93ee..18864afa8aee710a5aa7fe65565711119ca7a663:/docs/admin/Installation.md?ds=inline

diff --git a/docs/admin/Installation.md b/docs/admin/Installation.md
index 6b63b0d3..f5411604 100644
--- a/docs/admin/Installation.md
+++ b/docs/admin/Installation.md
@@ -26,6 +26,7 @@ and can't offer support.
 !!! Warning
     For larger installations you **must have** PostgreSQL 11+ and Postgis 3+
     otherwise import and queries will be slow to the point of being unusable.
+    Query performance has marked improvements with PostgrSQL 13+ and Postgis 3.2+.
 
 For compiling:
 
@@ -41,7 +42,7 @@ For compiling:
 
 For running Nominatim:
 
-  * [PostgreSQL](https://www.postgresql.org) (9.5+ will work, 11+ strongly recommended)
+  * [PostgreSQL](https://www.postgresql.org) (9.6+ will work, 11+ strongly recommended)
   * [PostGIS](https://postgis.net) (2.2+ will work, 3.0+ strongly recommended)
   * [Python 3](https://www.python.org/) (3.6+)
   * [Psycopg2](https://www.psycopg.org) (2.7+)
@@ -129,7 +130,7 @@ If you want to install latest development version from github, make sure to
 also check out the osm2pgsql subproject:
 
 ```
-git clone --recursive git://github.com/openstreetmap/Nominatim.git
+git clone --recursive https://github.com/openstreetmap/Nominatim.git
 ```
 
 The development version does not include the country grid. Download it separately:
@@ -157,6 +158,17 @@ make
 sudo make install
 ```
 
+!!! warning
+    The default installation no longer compiles the PostgreSQL module that
+    is needed for the legacy tokenizer from older Nominatim versions. If you
+    are upgrading an older database or want to run the
+    [legacy tokenizer](../customize/Tokenizers.md#legacy-tokenizer) for
+    some other reason, you need to enable the PostgreSQL module via
+    cmake: `cmake -DBUILD_MODULE=on ../Nominatim`. To compile the module
+    you need to have the server development headers for PostgreSQL installed.
+    On Ubuntu/Debian run: `sudo apt install postgresql-server-dev-<postgresql version>`
+
+
 Nominatim installs itself into `/usr/local` per default. To choose a different
 installation directory add `-DCMAKE_INSTALL_PREFIX=<install root>` to the
 cmake command. Make sure that the `bin` directory is available in your path