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63 lines
1.8 KiB
63 lines
1.8 KiB
3 years ago
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"""Repository rule for Android SDK and NDK autoconfiguration.
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This rule is a no-op unless the required android environment variables are set.
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"""
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# Based on https://github.com/tensorflow/tensorflow/tree/34c03ed67692eb76cb3399cebca50ea8bcde064c/third_party/android
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# Workaround for https://github.com/bazelbuild/bazel/issues/14260
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_ANDROID_NDK_HOME = "ANDROID_NDK_HOME"
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_ANDROID_SDK_HOME = "ANDROID_HOME"
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def _escape_for_windows(path):
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"""Properly escape backslashes for Windows.
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Ideally, we would do this conditionally, but there is seemingly no way to
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determine whether or not this is being called from Windows.
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"""
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return path.replace("\\", "\\\\")
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def _android_autoconf_impl(repository_ctx):
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sdk_home = repository_ctx.os.environ.get(_ANDROID_SDK_HOME)
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ndk_home = repository_ctx.os.environ.get(_ANDROID_NDK_HOME)
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# version 31.0.0 won't work https://stackoverflow.com/a/68036845
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sdk_rule = ""
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if sdk_home:
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sdk_rule = """
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native.android_sdk_repository(
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name="androidsdk",
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path="{}",
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build_tools_version="30.0.3",
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)
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""".format(_escape_for_windows(sdk_home))
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# Note that Bazel does not support NDK 22 yet, and Bazel 3.7.1 only
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# supports up to API level 29 for NDK 21
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ndk_rule = ""
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if ndk_home:
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ndk_rule = """
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native.android_ndk_repository(
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name="androidndk",
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path="{}",
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)
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""".format(_escape_for_windows(ndk_home))
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if ndk_rule == "" and sdk_rule == "":
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sdk_rule = "pass"
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repository_ctx.file("BUILD.bazel", "")
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repository_ctx.file("android_configure.bzl", """
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def android_workspace():
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{}
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{}
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""".format(sdk_rule, ndk_rule))
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android_configure = repository_rule(
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implementation = _android_autoconf_impl,
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environ = [
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_ANDROID_NDK_HOME,
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_ANDROID_SDK_HOME,
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],
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)
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