Custom SQLite Library
PSPDFKit for iOS does not include a custom version of SQLite, as iOS comes with SQLite already bundled. Depending on the version of iOS, this version is different and will also have different capabilities enabled:
|12.0-12.1 / macOS High Sierra 10.14||3.24.0 with FTS5 Extension (2018-06-04)|
|11.4||3.19.3 with FTS5 Extension (2017-06-08)|
|11.0 / macOS High Sierra 10.13||3.18.0 with FTS5 Extension (2017-03-28)|
|10.3 / macOS Sierra 10.12.4||3.16.0 (2017-01-02)|
|10.0-10.2 / macOS Sierra 10.12.0||3.14.0 (2016-08-08)|
If you see SQLite log warnings, read up on our troubleshooting tips.
Check the SQLite website to see what version is the most current. Sometimes your app requires a specific SQLite version. For example:
- you need to have the same SQLite version on every iOS version you support,
- you want to use some new SQLite features that are not yet available in SQLite shipped with iOS.
- you want to encrypt your SQLite database (see SQLite Database Encryption).
- you want to use FTS5 with
In such cases you usually link your app with a custom build of SQLite.
Detect what version is currently active
Call this in code to see what version of SQLite you currently use
// e.g. "3016000" for macOS 10.12.4 int sqliteVersion = sqlite3_libversion_number();
PSPDFKit and a custom SQLite library
PSPDFKit is dynamically linked with SQLite provided by iOS SDK. However if you link your app with a custom SQLite library, PSPDFKit will automatically use it. You might want to remove the
-lsqlite3 string from PSPDFKit.xcconfig inside the framework to remove the system linking.
Make sure your custom SQLite library is built with the following flags:
and if you’re using
To use FTS5:
To use FTS4:
PSPDFKit expects these options and fails early if any of these are missing.