363eea6960
We are facing peculiar Windows-only regressions in build times in https://bugzilla.mozilla.org/show_bug.cgi?id=1506511 and while the build times might just be Windows being slow, putting directories in `rerun-if-changed` might also be causing problems. The build only depends on the files, anyway, so let's just say that.
33 lines
916 B
Python
33 lines
916 B
Python
"""
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Generate build dependencies for Cargo.
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The `build.py` script is invoked by cargo when building lib/codegen to
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generate Rust code from the instruction descriptions. Cargo needs to know when
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it is necessary to rerun the build script.
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If the build script outputs lines of the form:
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cargo:rerun-if-changed=/path/to/file
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cargo will rerun the build script when those files have changed since the last
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build.
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"""
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from __future__ import absolute_import, print_function
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import os
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from os.path import dirname, abspath, join
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try:
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from typing import Iterable # noqa
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except ImportError:
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pass
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def generate():
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# type: () -> None
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print("Dependencies from meta language directory:")
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meta = dirname(abspath(__file__))
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for (dirpath, _, filenames) in os.walk(meta):
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for f in filenames:
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if f.endswith('.py'):
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print("cargo:rerun-if-changed=" + join(dirpath, f))
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