OpenCV Android custom build multiple ABI script

build_opencv_android.sh

#!/bin/bash
# Script to build opencv for android for multiple architectures
# Must be run from a directory that contains an 'opencv' directory with the
# opencv sources (from git or a tarball)
# Final Build to opencv/build/install
export ANDROID_NDK=$NDK

CMAKE_ARGS="-DNATIVE_API_LEVEL=14 \
            -DBUILD_ANDROID_EXAMPLES=0 \
            -DBUILD_ANDROID_PACKAGE=0 \
            -DBUILD_DOCS=0 \
            -DBUILD_EXAMPLES=0 \
            -DBUILD_FAT_JAVA_LIB=0 \
            -DBUILD_JASPER=0 \
            -DBUILD_JPEG=0 \
            -DBUILD_OPENEXR=0 \
            -DBUILD_PACKAGE=0 \
            -DBUILD_PERF_TESTS=0 \
            -DBUILD_PNG=0 \
            -DBUILD_SHARED_LIBS=0 \
            -DBUILD_TBB=0 \
            -DBUILD_TESTS=0 \
            -DBUILD_TIFF=0 \
            -DBUILD_WITH_DEBUG_INFO=0 \
            -DBUILD_ZLIB=0 \
            -DBUILD_opencv_androidcamera=0 \
            -DBUILD_opencv_apps=0 \
            -DBUILD_opencv_calib3d=0 \
            -DBUILD_opencv_contrib=0 \
            -DBUILD_opencv_core=1 \
            -DBUILD_opencv_features2d=0 \
            -DBUILD_opencv_flann=0 \
            -DBUILD_opencv_gpu=0 \
            -DBUILD_opencv_highgui=0 \
            -DBUILD_opencv_imgproc=1 \
            -DBUILD_opencv_java=0 \
            -DBUILD_opencv_legacy=0 \
            -DBUILD_opencv_ml=0 \
            -DBUILD_opencv_nonfree=0 \
            -DBUILD_opencv_objdetect=0 \
            -DBUILD_opencv_ocl=0 \
            -DBUILD_opencv_photo=0 \
            -DBUILD_opencv_stitching=0 \
            -DBUILD_opencv_superres=0 \
            -DBUILD_opencv_ts=0 \
            -DBUILD_opencv_video=0 \
            -DBUILD_opencv_videostab=0 \
            -DBUILD_opencv_world=0 \
            -DWITH_CUBLAS=0 \
            -DWITH_CUDA=0 \
            -DWITH_CUFFT=0 \
            -DWITH_EIGEN=0 \
            -DWITH_IPP=0 \
            -DWITH_JASPER=0 \
            -DWITH_JPEG=0 \
            -DWITH_OPENCL=0 \
            -DWITH_OPENEXR=0 \
            -DWITH_OPENMP=0 \
            -DWITH_PNG=0 \
            -DWITH_TBB=0 \
            -DWITH_TIFF=0"

# First argument is abi type (armeabi-v7a, x86)
function build_opencv {
  ABI=$1

  pushd opencv

  echo "Building Opencv for $ABI"
  mkdir build_$ABI
  pushd build_$ABI

  cmake -DANDROID_ABI=$ABI \
        -DCMAKE_TOOLCHAIN_FILE=../platforms/android/android.toolchain.cmake \
        $CMAKE_ARGS ..
  make -j5
  make install

  popd
  popd
}

build_opencv x86
build_opencv armeabi-v7a

# collect install directories to build/install
pushd opencv
mkdir build
pushd build

mkdir install
cp -r ../build_x86/install/* install/
cp -r ../build_armeabi-v7a/install/* install/

popd
popd