CMake/Modules/FindPythonInterp.cmake

# - Find python interpreter
# This module finds if Python interpreter is installed and determines where the
# executables are. This code sets the following variables:
#
#  PYTHONINTERP_FOUND - Was the Python executable found
#  PYTHON_EXECUTABLE  - path to the Python interpreter
#

FIND_PROGRAM(PYTHON_EXECUTABLE
  NAMES python2.5 python2.4 python2.3 python2.2 python2.1 python2.0 python1.6 python1.5 python
  PATHS
  [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\2.5\\InstallPath]
  [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\2.4\\InstallPath]
  [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\2.3\\InstallPath]
  [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\2.2\\InstallPath]
  [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\2.1\\InstallPath]
  [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\2.0\\InstallPath]
  [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\1.6\\InstallPath]
  [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\1.5\\InstallPath]
  )

SET(PYTHONINTERP_FOUND)
IF(PYTHON_EXECUTABLE)
  SET(PYTHONINTERP_FOUND ON)
ENDIF(PYTHON_EXECUTABLE)