| """ |
| The LLVM Compiler Infrastructure |
| |
| This file is distributed under the University of Illinois Open Source |
| License. See LICENSE.TXT for details. |
| |
| Prepares language bindings for LLDB build process. Run with --help |
| to see a description of the supported command line arguments. |
| """ |
| |
| # Python modules: |
| import os |
| import platform |
| import sys |
| |
| |
| def _find_file_in_paths(paths, exe_basename): |
| """Returns the full exe path for the first path match. |
| |
| @params paths the list of directories to search for the exe_basename |
| executable |
| @params exe_basename the name of the file for which to search. |
| e.g. "swig" or "swig.exe". |
| |
| @return the full path to the executable if found in one of the |
| given paths; otherwise, returns None. |
| """ |
| for path in paths: |
| trial_exe_path = os.path.join(path, exe_basename) |
| if os.path.exists(trial_exe_path): |
| return os.path.normcase(trial_exe_path) |
| return None |
| |
| |
| def find_executable(executable): |
| """Finds the specified executable in the PATH or known good locations.""" |
| |
| # Figure out what we're looking for. |
| if platform.system() == "Windows": |
| executable = executable + ".exe" |
| extra_dirs = [] |
| else: |
| extra_dirs = ["/usr/local/bin"] |
| |
| # Figure out what paths to check. |
| path_env = os.environ.get("PATH", None) |
| if path_env is not None: |
| paths_to_check = path_env.split(os.path.pathsep) |
| else: |
| paths_to_check = [] |
| |
| # Add in the extra dirs |
| paths_to_check.extend(extra_dirs) |
| if len(paths_to_check) < 1: |
| raise os.OSError( |
| "executable was not specified, PATH has no " |
| "contents, and there are no extra directories to search") |
| |
| result = _find_file_in_paths(paths_to_check, executable) |
| |
| if not result or len(result) < 1: |
| raise os.OSError( |
| "failed to find exe='%s' in paths='%s'" % |
| (executable, paths_to_check)) |
| return result |
