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cmake_minimum_required(VERSION 3.7 FATAL_ERROR)
#
# Instructions:
# 1. Download and install the Android NDK.
# 2. Run ccmake -DVTK_ANDROID_BUILD=ON /path/to/vtk/source
# 3. Set ANDROID_NDK to be the path to the NDK. (/opt/android-ndk by default)
# 4. Set API level and architecture.
# 5. Generate and make
#
include(ExternalProject)
# Convenience variables
set(PREFIX_DIR ${CMAKE_BINARY_DIR}/CMakeExternals/Prefix)
set(BUILD_DIR ${CMAKE_BINARY_DIR}/CMakeExternals/Build)
set(INSTALL_DIR ${CMAKE_BINARY_DIR}/CMakeExternals/Install)
set(OPENGL_ES_VERSION "2.0" CACHE STRING "OpenGL ES version (2.0 or 3.0)")
set_property(CACHE OPENGL_ES_VERSION PROPERTY STRINGS 2.0 3.0)
# Android options
# Android options
if (DEFINED ENV{ANDROID_NDK})
set(ANDROID_NDK "$ENV{ANDROID_NDK}" CACHE PATH "Path to the Android NDK")
else()
set(ANDROID_NDK "/opt/android-ndk" CACHE PATH "Path to the Android NDK")
endif()
set(ANDROID_NATIVE_API_LEVEL "21" CACHE STRING "Android Native API Level")
set(ANDROID_ARCH_ABI "armeabi" CACHE STRING "Target Android architecture/abi")
# find android
find_program(ANDROID_EXECUTABLE
NAMES android
DOC "The android command-line tool")
if(NOT ANDROID_EXECUTABLE)
message(FATAL_ERROR "Can not find android command line tool: android")
endif()
#find ant
find_program(ANT_EXECUTABLE
NAMES ant
DOC "The ant build tool")
if(NOT ANT_EXECUTABLE)
message(FATAL_ERROR "Can not find ant build tool: ant")
endif()
# Fail if the install path is invalid
if (NOT EXISTS ${CMAKE_INSTALL_PREFIX})
message(FATAL_ERROR
"Install path ${CMAKE_INSTALL_PREFIX} does not exist.")
endif()
# Compile a minimal VTK for its compile tools
macro(compile_vtk_tools)
ExternalProject_Add(
vtk-compile-tools
SOURCE_DIR ${CMAKE_SOURCE_DIR}
PREFIX ${CMAKE_BINARY_DIR}/CompileTools
BINARY_DIR ${CMAKE_BINARY_DIR}/CompileTools
INSTALL_COMMAND ""
BUILD_COMMAND ${CMAKE_COMMAND} --build . --config $<CONFIGURATION> --target vtkCompileTools
BUILD_ALWAYS 1
CMAKE_CACHE_ARGS
-DCMAKE_BUILD_TYPE:STRING=Release
-DVTK_BUILD_ALL_MODULES:BOOL=OFF
-DVTK_Group_Rendering:BOOL=OFF
-DVTK_Group_StandAlone:BOOL=ON
-DBUILD_SHARED_LIBS:BOOL=ON
-DBUILD_EXAMPLES:BOOL=OFF
-DBUILD_TESTING:BOOL=OFF
)
endmacro()
compile_vtk_tools()
# Hide some CMake configs from the user
mark_as_advanced(
BUILD_SHARED_LIBS
CMAKE_INSTALL_PREFIX
CMAKE_OSX_ARCHITECTURES
CMAKE_OSX_DEPLOYMENT_TARGET
VTK_RENDERING_BACKEND
)
# Now cross-compile VTK with the android toolchain
set(android_cmake_flags
-DANDROID_EXECUTABLE:FILE=${ANDROID_EXECUTABLE}
-DANT_EXECUTABLE:FILE=${ANT_EXECUTABLE}
-DBUILD_SHARED_LIBS:BOOL=OFF
-DBUILD_TESTING:BOOL=OFF
-DBUILD_EXAMPLES:BOOL=${BUILD_EXAMPLES}
-DVTK_RENDERING_BACKEND:STRING=OpenGL2
-DOPENGL_ES_VERSION:STRING=${OPENGL_ES_VERSION}
-DVTK_Group_Rendering:BOOL=OFF
-DVTK_Group_StandAlone:BOOL=OFF
-DVTK_Group_Imaging:BOOL=OFF
-DVTK_Group_MPI:BOOL=OFF
-DVTK_Group_Views:BOOL=OFF
-DVTK_Group_Qt:BOOL=OFF
-DVTK_Group_Tk:BOOL=OFF
-DVTK_Group_Web:BOOL=OFF
-DModule_vtkFiltersCore:BOOL=ON
-DModule_vtkFiltersModeling:BOOL=ON
-DModule_vtkFiltersSources:BOOL=ON
-DModule_vtkFiltersGeometry:BOOL=ON
-DModule_vtkIOGeometry:BOOL=ON
-DModule_vtkIOLegacy:BOOL=ON
-DModule_vtkIOImage:BOOL=OFF
-DModule_vtkIOPLY:BOOL=ON
-DModule_vtkIOInfovis:BOOL=ON
-DModule_vtkImagingCore:BOOL=ON
-DModule_vtkInteractionStyle:BOOL=ON
-DModule_vtkParallelCore:BOOL=ON
-DModule_vtkRenderingCore:BOOL=ON
-DModule_vtkRenderingFreeType:BOOL=ON
-DModule_vtkTestingCore:BOOL=ON
-DModule_vtkTestingRendering:BOOL=ON
)
# add volume rendering for ES 3.0
if (OPENGL_ES_VERSION STREQUAL "3.0")
set(android_cmake_flags ${android_cmake_flags}
-DModule_vtkRenderingVolumeOpenGL2:BOOL=ON
)
endif()
macro(crosscompile target api abi out_build_dir)
set(_ANDROID_API "${api}")
set(_ANDROID_ABI "${abi}")
set(_ANDROID_DIR "${target}-${api}-${abi}")
set(_ANDROID_TOOLCHAIN ${BUILD_DIR}/${_ANDROID_DIR}-toolchain.cmake)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/CMake/vtkAndroid-toolchain.cmake.in
${_ANDROID_TOOLCHAIN} @ONLY)
ExternalProject_Add(
${target}
SOURCE_DIR ${CMAKE_SOURCE_DIR}
PREFIX ${PREFIX_DIR}/${_ANDROID_DIR}
BINARY_DIR ${BUILD_DIR}/${_ANDROID_DIR}
INSTALL_DIR ${INSTALL_DIR}/${_ANDROID_DIR}
DEPENDS vtk-compile-tools
BUILD_ALWAYS 1
CMAKE_ARGS
-DCMAKE_INSTALL_PREFIX:PATH=${INSTALL_DIR}/${target}
-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-DCMAKE_TOOLCHAIN_FILE:PATH=${_ANDROID_TOOLCHAIN}
-DVTKCompileTools_DIR:PATH=${CMAKE_BINARY_DIR}/CompileTools
${android_cmake_flags}
)
set(${out_build_dir} "${BUILD_DIR}/${_ANDROID_DIR}")
endmacro()
crosscompile(vtk-android "${ANDROID_NATIVE_API_LEVEL}" "${ANDROID_ARCH_ABI}" vtk_android_build_dir)
add_test(NAME AndroidNative
WORKING_DIRECTORY ${vtk_android_build_dir}/Examples/Android/NativeVTK/bin
COMMAND ${CMAKE_COMMAND}
-DWORKINGDIR=${vtk_android_build_dir}/Examples/Android/NativeVTK/bin
-P ${CMAKE_CURRENT_SOURCE_DIR}/Examples/Android/NativeVTK/runtest.cmake
)
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