[CMake] CMake finds the wrong Python interpreter on Windows

[Noel O'Boyle]

On 24 February 2010 22:20, Bill Hoffman <bill.hoffman at kitware.com> wrote:
> Noel O'Boyle wrote:
>>
>> Hello all,
>>
>> With the following CMakeLists.txt on Windows...
>>
>> project("MyProject" NONE)
>> find_package(PythonInterp)
>> find_package(PythonLibs)
>>
>> Using CMake 2.6.4 (or CMake 2.8), I get
>>
>> -- Found PythonInterp: C:/Cygwin/bin/python2.5.exe
>> -- Found PythonLibs: C:/Python26/libs/python26.lib
>>
>> instead of
>>
>> -- Found PythonInterp: C:/Python26/python.exe
>> -- Found PythonLibs: C:/Python26/libs/python26.lib
>>
>> This is a Windows XP machine, with standard installs of Python 2.5 and
>> 2.6 and a standard Cygwin install of Python 2.5, where my PATH
>> includes C:\Python26 before C:\Cygwin\bin. Why doesn't CMake just use
>> the Python interpreter on my path as a first appoximation?
>>
> It should use the one in your PATH...   What is your PATH set to? Might be
> something in the PATH that confuses CMake...   I have seen issues with " in
> the PATH.

No ", but lots of spaces...my path is as follows:

C:\Tools\OpenBabel\nightly\ob-build>echo %PATH%
C:\Program Files\ImageMagick-6.5.8-Q16;;C:\Program Files\MiKTeX 2.8\miktex\bin;C
:\Python26\Lib\site-packages\PyQt4;C:\Program Files\CollabNet\Subversion Client;
C:\windows\system32;C:\windows;C:\windows\system32\WBEM;C:\Program Files\QuickTi
me\QTSystem\;C:\Program Files\Common Files\Roxio Shared\DLLShared\;C:\Program Fi
les\Common Files\Roxio Shared\DLLShared\;C:\Program Files\Common Files\Roxio Sha
red\9.0\DLLShared\;C:\Program Files\TortoiseSVN\bin;C:\Program Files\Support Too
ls\;C:\Program Files\OpenBabel-2.2.3;C:\Program Files\OpenBabel-2.2.1;C:\Python2
6;C:\Program Files\GaussSumexe-2.1.4\GaussSum-2.1.4\gnuplot400\bin;C:\Program Fi
les\CMake 2.6\bin;C:\Program Files\GnuWin32\bin;C:\Tools\swig\swigwin-1.3.40;C:\
Program Files\CollabNet\Subversion Client;C:\Cygwin\bin;C:\Data\DrugBank

The first python found on the PATH is my regular Windows Python as
shown by the following:

C:\Tools\OpenBabel\nightly\ob-build>python
Python 2.6.2 (r262:71605, Apr 14 2009, 22:40:02) [MSC v.1500 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> ^Z

C:\Tools\OpenBabel\nightly\ob-build>which python
/cygdrive/c/Python26/python

> -Bill
>