The following variables should be defined in project (pro) files.

BIBLIOTEQ_AUDIO_SUPPORTED

Defined if the local system provides audio services. Qt's multimedia
module is required.

BIBLIOTEQ_CALLNUM_DEBUG

Display text in biblioteq_callnum_table_item.cc.

BIBLIOTEQ_CONFIGURATION_FILE

Name of BiblioteQ's configuration file. Please use
the terminal option --configuration-file instead.

BIBLIOTEQ_ESCAPE_SINGLE_QUOTE

Escape the single quote before executing an SQL query.

BIBLIOTEQ_GUEST_ACCOUNT

The guest account for PostgreSQL.

BIBLIOTEQ_LINKED_WITH_POPPLER
BIBLIOTEQ_LINKED_WITH_POPPLER5 (Qt 5)
BIBLIOTEQ_LINKED_WITH_POPPLER6 (Qt 6)

Defined if BiblioteQ is linked with the Poppler library.

BIBLIOTEQ_LINKED_WITH_YAZ

Defined if BiblioteQ is linked with the YAZ library.

BIBLIOTEQ_MACOS_LIBPQ_PATH

Location of the libpq library on MacOS.

BIBLIOTEQ_NON_PORTABLE

Define if BiblioteQ should write data to some application-specific
location.

BIBLIOTEQ_POPPLER_VERSION_DEFINED

Poppler's version.

BIBLIOTEQ_QT_PDF_SUPPORTED

Defined if Qt PDF modules are available. The required modules
are pdf and pdfwidgets.

BIBLIOTEQ_SQLITE3_INCLUDE_FILE_EXISTS

Defined if the sqlite3.h file is present somewhere on the system.
The sqlite3.h is required for run-time loadable extensions and special
SQLite functions.
