Simply clone this repository and ensure to have all [submodules](https://git-scm.com/docs/git-submodule) imported as well (e.g. by using `git submodule update --init`). Then use the project file `harbour-fernschreiber.pro` to import the sources in your SailfishOS IDE. To build and run Fernschreiber or an application which is based on Fernschreiber, you need to create the file `harbour-fernschreiber/src/tdlibsecrets.h` and enter the required constants in the following format:
Moreover, you need to have a compiled version of [TDLib 1.7](https://github.com/tdlib/td) in the sub-directory `tdlib`. This sub-directory must contain another sub-directory that fits to the target device architecture (e.g. armv7hl, i486). Within this directory, there needs to be a folder called `lib` that contains at least `libtdjson.so`. For armv7hl the relative path would consequently be `tdlib/armv7hl/lib`.
In case you encounter strange performance issues on startup (several seconds delay, app seems to do nothing), please be sure to [follow the instructions from the respective GitHub issue](https://github.com/tdlib/td/issues/1322), i.e. let TDLib build SQLite with `-DOMIT_MEMLOCK` and be sure to comment the two lines 22558 (`#ifndef OMIT_MEMLOCK`) and 22567 (`#endif`) in the file `sqlite/sqlite/sqlite3.c`.
Fernschreiber does only output a few TDLib messages by default. To get its own debug log messages, you can either run a debug build to see all of them or use the environment variable `QT_LOGGING_RULES` to specify/filter which messages you'd like to see.
Run `QT_LOGGING_RULES="fernschreiber.*=true" harbour-fernschreiber` to see all messages or replace the `*` with specific logging categories. You'll find the logging category inside the corresponding `.cpp` file for backend usage or you can use `JS` to only see frontend messages.
If you want to contribute bug fixes, improvements, new features etc. please create a pull request (PR). PRs are always welcome and will be reviewed as soon as possible, but may take some time. :)
- The Telegram Database Library (TDLib) - available on [GitHub.com](https://github.com/tdlib/td). Thanks for making it available under the conditions of the Boost Software License 1.0! Details about the license of TDLib in [its license file](https://github.com/tdlib/td/blob/master/LICENSE_1_0.txt).
- Emoji parsing and artwork by [Twitter Emoji (Twemoji)](http://twitter.github.io/twemoji/), copyright 2018 Twitter, Inc and other contributors, Code licensed under the [MIT License](http://opensource.org/licenses/MIT), Graphics licensed under [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
- Animated sticker parsing and animation by [rlottie](https://github.com/Samsung/rlottie), copyright 2020 Samsung Electronics Co., Ltd. and [other contributors](https://github.com/Samsung/rlottie/blob/master/AUTHORS), Code licensed under the [MIT License](https://github.com/Samsung/rlottie/blob/master/licenses/COPYING.MIT), some rlottie components [licensed under other licenses](https://github.com/Samsung/rlottie/blob/master/COPYING).
