Installing prerequisites


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PostgreSQL: The minimum supported version is 9.4.
Linux: Evergreen has been tested on Debian Stretch (9), Debian Jessie (8), Ubuntu Xenial Xerus (16.04), and Ubuntu Trusty Tahr (14.04). If you are running an older version of these distributions, you may want to upgrade before upgrading Evergreen. For instructions on upgrading these distributions, visit the Debian or Ubuntu websites.
OpenSRF: The minimum supported version of OpenSRF is 3.0.0.

Evergreen has a number of prerequisite packages that must be installed before you can successfully configure, compile, and install Evergreen.

Begin by installing the most recent version of OpenSRF (3.0.0 or later). You can download OpenSRF releases from http://evergreen-ils.org/opensrf-downloads/
On some distributions, it is necessary to install PostgreSQL 9.4+ from external repositories.
- Ubuntu (Trusty) comes with an older version of PostgreSQL, so steps are taken to automatically utilize the PostgreSQL community’s apt sources. (For complete details, see: https://wiki.postgresql.org/wiki/Apt)
- Debian (Jessie/Stretch) and Ubuntu (Xenial) comes with PostgreSQL 9.4+, so no additional steps are required.
Issue the following commands as the root Linux account to install prerequisites using the Makefile.install prerequisite installer, substituting debian-stretch, debian-jessie,ubuntu-xenial, or ubuntu-trusty for <osname> below:
```
make -f Open-ILS/src/extras/Makefile.install <osname>
```
OPTIONAL: Developer additions
To perform certain developer tasks from a Git source code checkout, additional packages may be required. As the root Linux account:
- To install packages needed for retrieving and managing web dependencies, use the <osname>-developer Makefile.install target. Currently, this is only needed for building and installing the web staff client.
```
make -f Open-ILS/src/extras/Makefile.install <osname>-developer
```
- To install packages required for building Evergreen translations, use the <osname>-translator Makefile.install target.
```
make -f Open-ILS/src/extras/Makefile.install <osname>-translator
```
- To install packages required for building Evergreen release bundles, use the <osname>-packager Makefile.install target.
```
make -f Open-ILS/src/extras/Makefile.install <osname>-packager
```

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