So far the data directory constant has pointed to the source
directory to be usable with different subdirectories. Now only
the data subdirectory itself is being used with the constant,
so point to the directory directly.
This replaces {data_dir}/settings throughout the code, so that
the configuration may be placed somewhere else in the directory
structure (e.g. in /etc).
The PHP scripts need to know the position of the nominatim
tool in order to call it. This is handed in as environment
variable, so it can be set by the Python script.
This means that the php-symfony-dotenv library is now only needed
when using the legacy scripts. This includes the BDD tests which
currently still rely on the PHP utils.
The default location of osm2pgsql and the postgresql module
is decided at compile/installation time and is not necessarily
in the project directory.
With this change it is now possible to have a project directory
that is completely separate from the build directory.
This adds the notion of a project directory. This is the directory
that holds all necessary files for one specific installation of
Nominatim. Dotenv looks for an .env file in this directory and
adds it to the global environment together with the defaults from
Nominatim's data directory.
Add's symfony's dotenv library as a new dependency.
CONST_BasePath is split into separate configuration variables
for binaries, libraries and data. These variables as well as
the installation path are now set in the executable directly and
no longer configurable via project settings.
This is the first step towards an installable software. The
executables should know per installation where to find their
necessary data to execute. Project configuration needs to be
restricted to settings that really concern the specific Nominatim
installation.
Just make cmake install a small stub that includes
the settings from the build directory and then the
script from the source directory. Remove executable
rights from php files in utils/ so that they cannot
be accidentally executed.
