Issue with node gyp

[viestat]

I have some trouble when calling node-gyp rebuild on a pipe.

> node-gyp rebuild

Traceback (most recent call last):
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/gyp_main.py", line 16, in <module>
    sys.exit(gyp.script_main())
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 545, in script_main
    return main(sys.argv[1:])
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 538, in main
    return gyp_main(args)
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 514, in gyp_main
    options.duplicate_basename_check)
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/__init__.py", line 130, in Load
    params['parallel'], params['root_targets'])
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 2778, in Load
    variables, includes, depth, check, True)
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 394, in LoadTargetBuildFile
    includes, True, check)
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 266, in LoadOneBuildFile
    aux_data, includes, check)
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 304, in LoadBuildFileIncludesIntoDict
    subdict_path, include)
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 2144, in MergeDicts
    MergeDicts(to[k], v, to_file, fro_file)
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 2137, in MergeDicts
    to[k] = MakePathRelative(to_file, fro_file, v)
  File "/Users/jack/.eclectica/versions/node/8.11.1/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/input.py", line 2036, in MakePathRelative
    if item[-1] == '/':
IndexError: string index out of range while reading includes of binding.gyp while trying to load binding.gyp

relates to:
#63
nodejs/node-gyp#1217

[markelog]

Should work with current version :)