108 lines
4.3 KiB
Python
108 lines
4.3 KiB
Python
from pythonforandroid.recipe import PythonRecipe, current_directory, \
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shprint, info_main, warning
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from pythonforandroid.logger import error
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from os.path import join
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import sh
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class TFLiteRuntimeRecipe(PythonRecipe):
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###############################################################
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#
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# tflite-runtime README:
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# https://github.com/Android-for-Python/c4k_tflite_example/blob/main/README.md
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#
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# Recipe build references:
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# https://developer.android.com/ndk/guides/cmake
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# https://developer.android.com/ndk/guides/cpu-arm-neon#cmake
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# https://www.tensorflow.org/lite/guide/build_cmake
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# https://www.tensorflow.org/lite/guide/build_cmake_arm
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#
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# Tested using cmake 3.16.3 probably requires cmake >= 3.13
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#
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# THIS RECIPE DOES NOT BUILD x86_64, USE X86 FOR AN EMULATOR
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#
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###############################################################
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version = '2.8.0'
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url = 'https://github.com/tensorflow/tensorflow/archive/refs/tags/v{version}.zip'
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depends = ['pybind11', 'numpy']
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patches = ['CMakeLists.patch', 'build_with_cmake.patch']
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site_packages_name = 'tflite-runtime'
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call_hostpython_via_targetpython = False
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def should_build(self, arch):
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name = self.folder_name.replace('-', '_')
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if self.ctx.has_package(name, arch):
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info_main('Python package already exists in site-packages')
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return False
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info_main('{} apparently isn\'t already in site-packages'.format(name))
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return True
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def build_arch(self, arch):
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if arch.arch == 'x86_64':
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warning("******** tflite-runtime x86_64 will not be built *******")
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warning("Expect one of these app run time error messages:")
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warning("ModuleNotFoundError: No module named 'tensorflow'")
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warning("ModuleNotFoundError: No module named 'tflite_runtime'")
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warning("Use x86 not x86_64")
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return
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env = self.get_recipe_env(arch)
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# Directories
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root_dir = self.get_build_dir(arch.arch)
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script_dir = join(root_dir,
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'tensorflow', 'lite', 'tools', 'pip_package')
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build_dir = join(script_dir, 'gen', 'tflite_pip', 'python3')
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# Includes
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python_include_dir = self.ctx.python_recipe.include_root(arch.arch)
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pybind11_recipe = self.get_recipe('pybind11', self.ctx)
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pybind11_include_dir = pybind11_recipe.get_include_dir(arch)
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numpy_include_dir = join(self.ctx.get_site_packages_dir(arch),
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'numpy', 'core', 'include')
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includes = ' -I' + python_include_dir + \
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' -I' + numpy_include_dir + \
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' -I' + pybind11_include_dir
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# Scripts
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build_script = join(script_dir, 'build_pip_package_with_cmake.sh')
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toolchain = join(self.ctx.ndk_dir,
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'build', 'cmake', 'android.toolchain.cmake')
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# Build
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########
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with current_directory(root_dir):
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env.update({
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'TENSORFLOW_TARGET': 'android',
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'CMAKE_TOOLCHAIN_FILE': toolchain,
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'ANDROID_PLATFORM': str(self.ctx.ndk_api),
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'ANDROID_ABI': arch.arch,
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'WRAPPER_INCLUDES': includes,
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'CMAKE_SHARED_LINKER_FLAGS': env['LDFLAGS'],
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})
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try:
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info_main('tflite-runtime is building...')
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info_main('Expect this to take at least 5 minutes...')
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cmd = sh.Command(build_script)
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cmd(_env=env)
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except sh.ErrorReturnCode as e:
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error(str(e.stderr))
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exit(1)
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# Install
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##########
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info_main('Installing tflite-runtime into site-packages')
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with current_directory(build_dir):
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hostpython = sh.Command(self.hostpython_location)
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install_dir = self.ctx.get_python_install_dir(arch.arch)
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env['PACKAGE_VERSION'] = self.version
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shprint(hostpython, 'setup.py', 'install', '-O2',
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'--root={}'.format(install_dir),
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'--install-lib=.',
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_env=env)
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recipe = TFLiteRuntimeRecipe()
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