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Update documentation of FindPythonInterp.cmake 

Document new variables and update also comments in cmake code to explain
the current behaviour of FindPythonInterp.cmake module
This commit is contained in:
Björn Ricks 2011-08-05 09:53:39 +02:00
parent 4fd1e28495
commit d179500295
1 changed files with 10 additions and 3 deletions
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13
Modules/FindPythonInterp.cmake
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@ -4,11 +4,17 @@
#
# PYTHONINTERP_FOUND - Was the Python executable found
# PYTHON_EXECUTABLE - path to the Python interpreter
# Python_ADDITIONAL_VERSIONS - list of additional Python versions to search for
#
# PYTHON_VERSION_STRING - Python version found e.g. 2.5.2
# PYTHON_VERSION_MAJOR - Python major version found e.g. 2
# PYTHON_VERSION_MINOR - Python minor version found e.g. 5
# PYTHON_VERSION_PATCH - Python patch version found e.g. 2
#
# Python_ADDITIONAL_VERSIONS - list of additional Python versions to search for
#=============================================================================
# Copyright 2005-2010 Kitware, Inc.
# Copyright 2011 Bjoern Ricks <bjoern.ricks@gmail.com>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
@ -20,6 +26,7 @@
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# Search for the current active python version first
find_program(PYTHON_EXECUTABLE NAMES python)
# Set up the versions we know about, in the order we will search. Always add
@ -28,8 +35,7 @@ set(_Python_VERSIONS
${Python_ADDITIONAL_VERSIONS}
2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.6 1.5)
# Run first with the Python version in the executable
# Search for newest python version if python executable isn't found
if(NOT PYTHON_EXECUTABLE)
foreach(_CURRENT_VERSION ${_Python_VERSIONS})
set(_Python_NAMES python${_CURRENT_VERSION})
@ -43,6 +49,7 @@ if(NOT PYTHON_EXECUTABLE)
endforeach()
endif()
# determine python version string
if(PYTHON_EXECUTABLE)
execute_process(COMMAND "${PYTHON_EXECUTABLE}" --version ERROR_VARIABLE _VERSION OUTPUT_QUIET ERROR_STRIP_TRAILING_WHITESPACE)
string(REPLACE "Python " "" PYTHON_VERSION_STRING "${_VERSION}")