mirror of https://github.com/FreeRDP/FreeRDP
159 lines
5.3 KiB
Plaintext
159 lines
5.3 KiB
Plaintext
Overview
|
|
========
|
|
|
|
The FreeRDP Android port consists of two parts: the Android Java GUI (client/Android)
|
|
and the JNI bindings (client/Android/jni) which are written in C and wrap FreeRDP to
|
|
be used with Java. The JNI is directly integrated within FreeRDPs build system.
|
|
For building the GUI part there are three possibilities:
|
|
* integrated ant build - have cmake to operate ant and build everything
|
|
* manual ant build - build JNI with cmake and invoke ant manually for the GUI
|
|
* IDE builds using your favourite IDE - use cmake for building JNI and your IDE for GUI
|
|
|
|
Manual build and IDE build are mostly used for development.
|
|
|
|
|
|
Build requirements
|
|
=================
|
|
|
|
For the Android port some additional dependencies need to be fulfilled:
|
|
|
|
* for JNI
|
|
- Android NDK (>= r8d)
|
|
- prebuild static openssl libraries (see below)
|
|
|
|
* for the Java GUI (if build with ant)
|
|
- ant
|
|
- Android SDK - version >= 21
|
|
|
|
FreeRDP requires openssl libraries for building but they are not part of the
|
|
Android NDK and therefore they need to be prebuild manually.
|
|
Multiple source versions and builds of static openssl libraries are floating around.
|
|
At the time of writing we have tested and used:
|
|
https://github.com/bmiklautz/Android-external-openssl-ndk-static.
|
|
However, any other static build should work as well.
|
|
|
|
To build openssl:
|
|
|
|
git clone git@github.com:bmiklautz/Android-external-openssl-ndk-static.git
|
|
cd Android-external-openssl-ndk-static
|
|
ndk-build # found in the Android NDK
|
|
|
|
|
|
Building
|
|
========
|
|
|
|
Integrated build
|
|
----------------
|
|
|
|
Run the following commands in the top level freerdp directory. Don't
|
|
forget to set ANDROID_NDK, ANDROID_SDK and FREERDP_ANDROID_EXTERNAL_SSL_PATH
|
|
to the absolut paths on your machine:
|
|
|
|
cmake -DCMAKE_TOOLCHAIN_FILE=cmake/AndroidToolchain.cmake \
|
|
-DANDROID_NDK="_your_ndk_path_here_" \
|
|
-DFREERDP_ANDROID_EXTERNAL_SSL_PATH="_your_ssl_build_root_path_" \
|
|
-DANDROID_SDK="_your_sdk_path_here_"
|
|
make
|
|
|
|
After that you should have a client/Android/bin/aFreeRDP-debug.apk.
|
|
|
|
Manual ant builds
|
|
-----------------
|
|
First run cmake to prepare the build and build JNI.
|
|
Don't forget to set ANDROID_NDK, ANDROID_SDK and FREERDP_ANDROID_EXTERNAL_SSL_PATH
|
|
to the absolut paths on your machine:
|
|
|
|
cmake -DCMAKE_TOOLCHAIN_FILE=cmake/AndroidToolchain.cmake \
|
|
-DANDROID_NDK="_your_ndk_path_here_" \
|
|
-DFREERDP_ANDROID_EXTERNAL_SSL_PATH="_your_ssl_build_root_path_" \
|
|
-DANDROID_SDK="_your_sdk_path_here_" -DANDROID_BUILD_JAVA=OFF
|
|
make
|
|
|
|
Now you can run your favourite ant command in client/Android like this:
|
|
|
|
cd client/Android
|
|
ant debug install
|
|
|
|
Using an IDE
|
|
------------
|
|
Here is an example on how to use Eclipse for developing/building the Java GUI.
|
|
For this the "Android development tools for Eclipse" are required (available via
|
|
the eclipse marketplace).
|
|
|
|
cmake -DCMAKE_TOOLCHAIN_FILE=cmake/AndroidToolchain.cmake \
|
|
-DANDROID_NDK="_your_ndk_path_here_" \
|
|
-DFREERDP_ANDROID_EXTERNAL_SSL_PATH="_your_ssl_build_root_path_" \
|
|
-DANDROID_BUILD_JAVA=OFF
|
|
make
|
|
|
|
Open Eclipse and choose:
|
|
File -> Import -> General -> Existing Projects into Workspace
|
|
|
|
Browse to the client/Android directory in your FreeRDP folder and click finish.
|
|
If you get something like "Project 'aFreeRDP' is missing required source
|
|
folder: 'gen'" just build the project once and you are good to go.
|
|
|
|
Side note: If you add -G "Eclipse CDT4 - Unix Makefiles" when running cmake
|
|
you can also import FreeRDP into Eclipse too. Then you have one Java project and one c/c++
|
|
project you can work on. This requires CDT to be installed in Eclipse.
|
|
|
|
|
|
cmake variables
|
|
===============
|
|
|
|
JNI related
|
|
-----------
|
|
|
|
CMAKE_TOOLCHAIN_FILE
|
|
* the toolchain file to use must be cmake/AndroidToolchain.cmake
|
|
|
|
ANDROID_NDK (used from toolchain file)
|
|
* absolute path to the NDK
|
|
|
|
ANDROID_ABI (used from toolchain file)
|
|
* Android ABI to build for (default is armeabi-v7a)
|
|
|
|
FREERDP_ANDROID_EXTERNAL_SSL_PATH (used by FindOpenSSL)
|
|
* absolut root path to the prebuild static openssl libraries
|
|
|
|
WITH_DEBUG_ANDROID_JNI
|
|
- enable debugging for JNI
|
|
|
|
The libraries must be located in obj/local/armeabi/ or obj/local/armeabi-v7a/.
|
|
Cmake searches in armeabi first then armeabi-v7a. It is possible to build FreeRDP
|
|
for armeabi-v7a and link against armeabi openssl but not the other way around.
|
|
Therefore it is suggested to build openssl for armeabi.
|
|
|
|
Java GUI related
|
|
----------------
|
|
|
|
ANDROID_BUILD_JAVA (used by client/Android/CMakeLists.txt)
|
|
* can be ON/OFF (default OFF) whether or not to build the GUI with cmake
|
|
|
|
ANDROID_SDK (used by client/Android/CMakeLists.txt)
|
|
* absolute path to the Android SDK to use
|
|
|
|
This is used to generate local.properties needed by ant. Needs to be set
|
|
if you build manually with ant or do integrated builds.
|
|
|
|
|
|
Development
|
|
===========
|
|
|
|
Updating JNI headers
|
|
--------------------
|
|
|
|
Whenever the FreeRDP API changes or you need some extra functionality in your Java
|
|
GUI the JNI needs to be updated. The JNI headers are generated from the compiled
|
|
Java classes:
|
|
|
|
* edit client/Android/src/com/freerdp/afreerdp/services/LibFreeRDP.Java to
|
|
reflect your changes
|
|
* build the Android Java project as described above
|
|
* run ./scripts/regenerate_JNI_headers.sh from your FreeRDP checkout top level
|
|
directory
|
|
|
|
After that you need to implement the functionality in client/Android/jni/android_freerdp.c and add
|
|
the call to client/Android/jni/generated/android_freerdp_jni.c.
|
|
After that FreeRDP and the Android package need to be rebuilt to include the latest libfreerdp-android in the package.
|