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# ----------------------------------------------------------------------------
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# Root CMake file for Android Opencv Build
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#
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# To build with cmake
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# $ mkdir build
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# $ cd build
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# $ cmake ..
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# $ make
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# Make sure to set the path in the cache for the crystax ndk available
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# here:
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# http://www.crystax.net/android/ndk-r4.php
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#
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# - initial version August 2010 Ethan Rublee ethan.rublee@gmail.com
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#
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# ----------------------------------------------------------------------------
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project(android-opencv-shared)
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cmake_minimum_required(VERSION 2.8)
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set(opencv_root "$ENV{HOME}/opencv" CACHE PATH "opencv source root directory")
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if(NOT EXISTS ${opencv_root})
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message(FATAL_ERROR "Cannot find your opencv root directory!" )
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endif()
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set(android_opencv_mk "${opencv_root}/android/build/android-opencv.mk" cache FILE "the generated android-opencv.mk file")
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if(NOT EXISTS ${android_opencv_mk})
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message(FATAL_ERROR "please locate the cmake generated android-opencv.mk file, usually in the android/build directory...")
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endif()
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set(ANDROID true)
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file(GLOB module_includes "${opencv_root}/modules/[a-zA-Z]*")
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list(REMOVE_ITEM module_includes ${opencv_root}/modules/CMakeLists.txt)
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set(module_includes ${module_includes} ${CMAKE_SOURCE_DIR}/../3rdparty $(OPENCV_BUILD_ROOT) )
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foreach(mdir ${module_includes})
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string(REPLACE "${opencv_root}" "$(OPENCV_ROOT)" n_f ${mdir})
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set(android_module_include_dirs "${android_module_include_dirs} ${n_f}/include")
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endforeach()
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configure_file("${CMAKE_SOURCE_DIR}/Android.mk.master.in" "${CMAKE_BINARY_DIR}/Android.mk")
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configure_file("${CMAKE_SOURCE_DIR}/Application.mk.in" "${CMAKE_BINARY_DIR}/Application.mk")
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configure_file("${CMAKE_SOURCE_DIR}/AndroidManifest.xml.in" "${CMAKE_BINARY_DIR}/AndroidManifest.xml")
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configure_file("${CMAKE_SOURCE_DIR}/default.properties.in" "${CMAKE_BINARY_DIR}/default.properties")
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set(NDK_ROOT "$ENV{HOME}/android-ndk-r4-crystax" CACHE STRING "the crystax ndk directory")
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if(NOT EXISTS ${NDK_ROOT})
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message(FATAL_ERROR "Cannot find your ndk root directory! please download and
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unzip the android ndk from crystax to the directory specified by NDK_ROOT
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You may download the crystax ndk from:
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http://www.crystax.net/android/ndk-r4.php" )
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endif()
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set(J "2" CACHE STRING "how many processes for make -j <J>")
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ADD_CUSTOM_COMMAND(
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OUTPUT android-ndk
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DEPENDS ${CMAKE_BINARY_DIR}/Android.mk
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COMMAND "${NDK_ROOT}/ndk-build"
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ARGS --directory=${CMAKE_BINARY_DIR} NDK_APPLICATION_MK=Application.mk -j${J}
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)
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ADD_CUSTOM_COMMAND(
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OUTPUT android-swig
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DEPENDS ${SWIG_MAIN}
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COMMAND "swig"
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ARGS --directory=${CMAKE_BINARY_DIR} NDK_APPLICATION_MK=Application.mk -j${J}
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)
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configure_file("${CMAKE_SOURCE_DIR}/android-opencv.mk.in" "${CMAKE_BINARY_DIR}/android-opencv.mk")
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ADD_CUSTOM_TARGET(ndk ALL echo
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DEPENDS android-ndk
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)
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message(STATUS "Make will use make -j${J} - for speeding up build - you may change this in the cache")
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message(STATUS "The NDK directory is ${NDK_ROOT}")
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message(STATUS "OpenCV source root is ${opencv_root}")
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message(STATUS "just run make - and grab some coffee or tea ;)")
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message(STATUS "The android opencv libs will be located in ${CMAKE_BINARY_DIR}/obj/local/armeabi*/")
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