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183 lines
4.5 KiB
Markdown
183 lines
4.5 KiB
Markdown
# Building targets
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KOReader is available for multiple platforms. Here are instructions to build installable packages for all these platforms.
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These instructions are intended for a Linux OS. MacOS and Windows users are suggested to develop in a Linux VM.
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## Prerequisites
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This instructions asume that you [have a development environment ready to run](Building.md) KOReader. If not then please install common prerequisites first.
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### A toolchain for your target.
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Each target has its own architecture and you'll need to setup a proper cross-compile toolchain. Your GCC should be at least version 4.9.
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#### for Android
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A compatible version of the Android NDK and SDK will be downloaded automatically by `./kodev release android` if no NDK or SDK is provided in environment variables. For that purpose you can use:
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```
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NDK=/ndk/location SDK=/sdk/location ./kodev release android
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```
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If you want to use your own installed tools please make sure that you have the **NDKr15c** and the SDK for Android 9 (**API level 28**) already installed.
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#### for embedded linux devices
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Cross compile toolchains are available for Ubuntu users through these commands:
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##### Ubuntu Touch
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```
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sudo apt-get install gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf
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```
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**NOTE 1:** The packages `pkg-config-arm-linux-gnueabihf` and `pkg-config-arm-linux-gnueabi` may
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block you from building. Remove them if you get the following ld error
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```
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/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/bin/ld: cannot find -lglib-2.0
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```
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##### e-Ink devices (e.g., Kindle, Kobo, Cervantes, reMarkable, PocketBook)
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**NOTE:** While, for some targets (specifically, Cervantes, Kindle & Kobo), we make *some* effort to support Linaro/Ubuntu TCs,
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they do *not* exactly target the proper devices. While your build *may* go fine, this will *probably* lead to runtime failure.
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As time goes by, and/or the more bleeding-edge your distro is, the greater the risk for mismatch gets.
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Which means, that, unless you are *very* sure you know what you're doing, you'll want to use the exact same TCs we do, ones that target their respective platforms properly.
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We have a distribution-agnostic solution to make that mostly painless: [koxtoolchain](https://github.com/koreader/koxtoolchain)!
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This will allow you to build the *exact* same TCs used to build the nightlies, thanks to the magic of [crosstool-ng](https://github.com/crosstool-ng/crosstool-ng). These are also included precompiled in the Docker images for the respective targets.
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### Additional packages
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Some platforms will require additional packages:
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#### for Android
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Building for Android requires `openjdk-8-jdk` and `p7zip-full`.
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For both Ubuntu and Debian, install the packages:
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```
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sudo apt-get install openjdk-8-jdk p7zip-full
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```
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#### for Debian
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Building a debian package requires the `dpkg-deb` tool. It should be already installed if you're on a Debian/Ubuntu based distribution.
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#### for Ubuntu Touch
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Building for Ubuntu Touch requires the `click` package management tool.
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Ubuntu users can install it with:
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```
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sudo apt-get install click
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```
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**NOTE**: The Ubuntu Touch build won't start anymore, and none of the currently active developers have any physical devices. Please visit [#4960](https://github.com/koreader/koreader/issues/4960) if you want to help.
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The Ubuntu Touch builds are therefore no longer published under releases on GitHub, but they are still available from [the nightly build server](http://build.koreader.rocks/download/nightly/).
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## Building
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You can check out our [nightlybuild script][nb-script] to see how to build a package from scratch.
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### Android
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```
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./kodev release android
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```
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### Android (x86)
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```
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ANDROID_ARCH=x86 ./kodev release android
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```
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### Desktop Linux
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#### Emulator
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See [Building](https://github.com/koreader/koreader/blob/master/doc/Building.md).
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#### AppImage (x86_64)
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```
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./kodev release appimage
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```
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#### Debian (x86_64)
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```
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./kodev release debian
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```
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#### Debian (armel)
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```
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./kodev release debian-armel
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```
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#### Debian (armhf)
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```
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./kodev release debian-armhf
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```
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### Desktop macOS
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```
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./kodev release macos
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```
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### e-Ink devices
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#### Cervantes
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```
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./kodev release cervantes
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```
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#### Kindle
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```
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./kodev release kindle
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```
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#### Kobo
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```
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./kodev release kobo
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```
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#### Pocketbook
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```
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./kodev release pocketbook
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```
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#### reMarkable
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```
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./kodev release remarkable
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```
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### Embedded Linux devices
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#### Ubuntu Touch
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```
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./kodev release ubuntu-touch
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```
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## Porting to a new target.
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See [Porting.md](Porting.md)
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[nb-script]:https://gitlab.com/koreader/nightly-builds/blob/master/build_release.sh
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