Dependency on Python version¶

I have Python 2.7.8 (the latest Python 2 release version) and Python 3.4.1 (the latest Python 3 release version) installed on my computer.

The "modules\matlab\CMakeLists.txt" file is using the "${PYTHON_DEFAULT_EXECUTABLE}" variable (which is initialized with "${PYTHON2_EXECUTABLE}" in "cmake\OpenCVDetectPython.cmake") to launch the scripts "gen_matlab.py" and "cvmex.py" which are using the "lstrip_blocks" parameter which seems not available in Python 2.7.8 :

jtemplate = Environment(loader=FileSystemLoader(template_dir), trim_blocks=True, lstrip_blocks=True)

If the "${PYTHON_DEFAULT_EXECUTABLE}" variable is replaced by the "${PYTHON3_EXECUTABLE}" variable, the error disappears.

Dependency on unicode¶

I am working on a 64 bits OS. On such an OS, the default encoding used by Python is unicode.
=> in the "modules\java\generator\rst_parser.py" script, I have had to add the encoding to the open function:

df = open(doc, "rt" , encoding="utf_8")

a parameter which is not compatible with Python2...

Default Python executable¶

Since the default Python executable is not only used in the Matlab binding module, i have chosen to write an issue instead of a PR...