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39 lines
1.5 KiB
Python
39 lines
1.5 KiB
Python
#!/usr/bin/env python
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# Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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# This file just executes its arguments, except that also adds GN_OUT_DIR and
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# CARGO_PKG_VERSION to the environ. This is for compatibility with cargo.
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import subprocess
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import sys
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import os
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import re
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env = os.environ.copy()
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if sys.platform == 'win32':
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# On Windows, when gn is setting up the build toolchain, it produces a set
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# of environment variables that are required to invoke the right build
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# toolchain. We need to load those environment variables here too in order
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# for rustc to be able to successfully invoke the linker tool.
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# The file is in 'windows environment block' format, which contains
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# multiple 'key=value' pairs, separated by '\0' bytes, and terminated by
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# two '\0' bytes at the end.
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gn_env_pairs = open("environment.x64").read()[:-2].split('\0')
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gn_env = dict([pair.split('=', 1) for pair in gn_env_pairs])
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env.update(gn_env)
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# This is for src/msg.rs to know where to find msg_generated.rs.
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# When building with Cargo this variable is set by build.rs.
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env["GN_OUT_DIR"] = os.path.abspath(".")
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assert os.path.isdir(env["GN_OUT_DIR"])
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# Set the CARGO_PKG_VERSION env variable if provided as an argument
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# When building with Cargo this variable is set automatically
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args = sys.argv[1:]
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for i, arg in enumerate(args):
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match = re.search('--cargo-pkg-version="?([^"]*)"?', arg)
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if match:
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env["CARGO_PKG_VERSION"] = match.group(1)
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del args[i]
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break
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sys.exit(subprocess.call(args, env=env))
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