* [proj](https://proj.org/)
* [bzip2](http://www.bzip.org/)
* [zlib](https://www.zlib.net/)
+ * [ICU](http://site.icu-project.org/)
* [Boost libraries](https://www.boost.org/), including system and filesystem
* PostgreSQL client libraries
* a recent C++ compiler (gcc 5+ or Clang 3.8+)
For running Nominatim:
- * [PostgreSQL](https://www.postgresql.org) (9.3+)
- * [PostGIS](https://postgis.org) (2.2+)
- * [Python 3](https://www.python.org/)
- * [Psycopg2](https://initd.org/psycopg)
+ * [PostgreSQL](https://www.postgresql.org) (9.3+ will work, 11+ strongly recommended)
+ * [PostGIS](https://postgis.net) (2.2+)
+ * [Python 3](https://www.python.org/) (3.5+)
+ * [Psycopg2](https://www.psycopg.org) (2.7+)
+ * [Python Dotenv](https://github.com/theskumar/python-dotenv)
+ * [psutil](https://github.com/giampaolo/psutil)
+ * [Jinja2](https://palletsprojects.com/p/jinja/)
+ * [PyICU](https://pypi.org/project/PyICU/)
* [PHP](https://php.net) (7.0 or later)
* PHP-pgsql
* PHP-intl (bundled with PHP)
+ * PHP-cgi (for running queries from the command line)
For running continuous updates:
- * [pyosmium](https://osmcode.org/pyosmium/) (with Python 3)
+ * [pyosmium](https://osmcode.org/pyosmium/)
For dependencies for running tests and building documentation, see
the [Development section](../develop/Development-Environment.md).
planet import 64GB of RAM or more are strongly recommended. Do not report
out of memory problems if you have less than 64GB RAM.
-For a full planet install you will need at least 800GB of hard disk space
-(take into account that the OSM database is growing fast). SSD disks
-will help considerably to speed up import and queries.
+For a full planet install you will need at least 900GB of hard disk space.
+Take into account that the OSM database is growing fast.
+Fast disks are essential. Using NVME disks is recommended.
Even on a well configured machine the import of a full planet takes
-at least 2 days. Without SSDs 7-8 days are more realistic.
+around 2 days. On traditional spinning disks, 7-8 days are more realistic.
## Tuning the PostgreSQL database
```
cmake ../Nominatim
make
+sudo make install
+```
+
+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
+in that case, e.g.
+
+```
+export PATH=<install root>/bin:$PATH
```
Now continue with [importing the database](Import.md).