66 lines
1.9 KiB
Python
66 lines
1.9 KiB
Python
"""
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The LLVM Compiler Infrastructure
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This file is distributed under the University of Illinois Open Source
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License. See LICENSE.TXT for details.
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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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