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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
"""
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Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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See https://llvm.org/LICENSE.txt for license information.
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SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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Prepares language bindings for LLDB build process. Run with --help
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to see a description of the supported command line arguments.
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"""
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# Python modules:
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import os
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import platform
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import sys
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def _find_file_in_paths(paths, exe_basename):
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"""Returns the full exe path for the first path match.
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@params paths the list of directories to search for the exe_basename
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executable
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@params exe_basename the name of the file for which to search.
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e.g. "swig" or "swig.exe".
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@return the full path to the executable if found in one of the
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given paths; otherwise, returns None.
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"""
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for path in paths:
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trial_exe_path = os.path.join(path, exe_basename)
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if os.path.exists(trial_exe_path):
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return os.path.normcase(trial_exe_path)
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return None
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def find_executable(executable):
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"""Finds the specified executable in the PATH or known good locations."""
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# Figure out what we're looking for.
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if platform.system() == "Windows":
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executable = executable + ".exe"
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extra_dirs = []
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else:
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extra_dirs = ["/usr/local/bin"]
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# Figure out what paths to check.
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path_env = os.environ.get("PATH", None)
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if path_env is not None:
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paths_to_check = path_env.split(os.path.pathsep)
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else:
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paths_to_check = []
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# Add in the extra dirs
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paths_to_check.extend(extra_dirs)
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if len(paths_to_check) < 1:
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raise os.OSError(
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"executable was not specified, PATH has no "
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"contents, and there are no extra directories to search")
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result = _find_file_in_paths(paths_to_check, executable)
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if not result or len(result) < 1:
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raise os.OSError(
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"failed to find exe='%s' in paths='%s'" %
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(executable, paths_to_check))
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return result
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