39 lines
958 B
Python
39 lines
958 B
Python
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# A helper function to get the go platform string of the Bazel host.
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# This can be used to do cross-platform go compilations.
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# Example:
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# $ bazelisk run //bazel:go_platform
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# darwin_arm64
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py_binary(
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name = "go_platform",
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srcs = ["go_platform.py"],
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data = ["@go_sdk//:bin/go"],
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tags = ["no-remote"], # Need the platform of the host
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)
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_GO_PLATFORM = """
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import os
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import subprocess
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# https://bazel.build/reference/be/make-variables#predefined_label_variables
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go_exe = os.path.abspath("$(execpath @go_sdk//:bin/go)")
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result = subprocess.run([
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go_exe,
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"version",
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], capture_output=True, encoding="utf-8")
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# e.g. go version go1.18 darwin/arm64
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os_arch = result.stdout.strip().split(" ")[3]
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# e.g. darwin/arm64
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print(os_arch.replace("/", "_"))
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"""
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genrule(
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name = "create_go_platform_script",
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outs = ["go_platform.py"],
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cmd = "echo '%s' > $@" % _GO_PLATFORM,
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exec_tools = [
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"@go_sdk//:bin/go",
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],
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)
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