mirror of
https://github.com/opencv/opencv.git
synced 2024-11-26 20:20:20 +08:00
78 lines
2.9 KiB
Plaintext
78 lines
2.9 KiB
Plaintext
Author: Ethan Rublee
|
|
email: ethan.rublee@gmail.com
|
|
########################################################
|
|
Prerequisites:
|
|
########################################################
|
|
android-ndk-r5b http://developer.android.com/sdk/ndk/index.html
|
|
the official ndk with standalone toolchain
|
|
android-cmake http://code.google.com/p/android-cmake/
|
|
this is for the cmake toolchain for android
|
|
mercurial
|
|
sudo apt-get install mercurial
|
|
cmake
|
|
opencv (you should have this if you're reading this file :)
|
|
|
|
########################################################
|
|
Quick NDK Setup(ubuntu and bash):
|
|
########################################################
|
|
create some working directory:
|
|
WORK=$HOME/android_dev
|
|
cd $WORK
|
|
|
|
now get the android-cmake project with mercurial
|
|
hg clone https://android-cmake.googlecode.com/hg/ android-cmake
|
|
|
|
there is a convenience script in there for pulling down and setting up the
|
|
android ndk as a standalone toolchain
|
|
cd android-cmake/scripts
|
|
./get_ndk_toolchain_linux.sh $WORK
|
|
|
|
add the cmake toolchain location to your bashrc or otherwise export it to your env
|
|
echo export ANDTOOLCHAIN=$WORK/android-cmake/toolchain/android.toolchain.cmake >> $HOME/.bashrc
|
|
|
|
########################################################
|
|
Quick opencv build(ubuntu and bash):
|
|
########################################################
|
|
Make sure you either source your bashrc or otherwise export the ANDTOOLCHAIN variable.
|
|
|
|
There is a script in the android folder for running cmake with the proper cache
|
|
variables set. It is recommended that you use this to setup a smake build directory.
|
|
cd opencv/android
|
|
sh ./cmake_android.sh
|
|
|
|
You should now see a build directory, that is ready to be made.
|
|
cd build
|
|
make -j8
|
|
|
|
That will build most of the opencv modules, except for those that don't make sense
|
|
on android - gpu, etc..
|
|
|
|
To install to the toolchain:
|
|
make install
|
|
########################################################
|
|
Using opencv in you're cmake own projects.
|
|
########################################################
|
|
Use the cmake find script for opencv:
|
|
find_package(OpenCV REQUIRED)
|
|
|
|
Then when you run cmake, use:
|
|
cmake -DCMAKE_TOOLCHAIN_FILE=$ANDTOOLCHAIN ..
|
|
|
|
And direct your cmake cache for OpenCV_Dir to the path that you build opencv for android.
|
|
something like : opencv/android/build
|
|
|
|
To avoid setting the cmake cache for OpenCV_Dir, you can just "install" opencv to your
|
|
android toolchain. Run the following from the opencv/android/build path:
|
|
make install
|
|
|
|
########################################################
|
|
android targets
|
|
########################################################
|
|
You may wish to build android for multiple hardware targets.
|
|
|
|
Just change the cmake cache ARM_TARGETS to either:
|
|
"armeabi" "armeab-v7a" "armeab-v7a with NEON"
|
|
|
|
You may install each of these to the toolchain, and they should be linked against
|
|
properly via way of the android-cmake toolchain.
|