[cairo] pycairo, install under osx and python3 fails by waf

[Heribert Hoffmann]

I tried to install pycairo under OSX. (10.9. Mavericks)
When executing "waf" I get an error, that the version is to old. There is the original Apple Python 2.7... installation and additionally a Python3 as provided by python.org.
How can i tell waf to point to the right version?

-----------------------------------------------------

The Terminal output:

xxxx-imac:pycairo oe$ python3 ./waf configure
  ./options()
Setting top to                           : /Users/xxxx/Desktop/temp-cairo/pycairo 
Setting out to                           : /Users/xxxx/Desktop/temp-cairo/pycairo/build_directory 
  ./configure()
Checking for 'gcc' (c compiler)          : ok 
Checking for program python              : /usr/bin/python 
python executable '/usr/bin/python' different from sys.executable '/Library/Frameworks/Python.framework/Versions/3.4/bin/python3'
Checking for python version              : (2, 7, 5, 'final', 0) 
The python version is too old, expecting (3, 1, 0)
(complete log in /Users/xxxx/Desktop/temp-cairo/pycairo/build_directory/config.log)


--------------------------------
The log file:
# project pycairo (1.10.0) configured on Mon Sep 15 15:01:53 2014 by
# waf 1.6.4 (abi 98, python 30401f0 on darwin)
# using ./waf configure
#
----------------------------------------
Setting top to
/Users/oe/Desktop/temp-cairo/pycairo
----------------------------------------
Setting out to
/Users/xxxx/Desktop/temp-cairo/pycairo/build_directory
----------------------------------------
Checking for 'gcc' (c compiler)
find program=['gcc', 'cc'] paths=['/Library/Frameworks/Python.framework/Versions/3.4/bin', '/usr/bin', '/bin', '/usr/sbin', '/sbin', '/usr/local/bin'] var='CC' -> '/usr/bin/gcc'
find program=['ar'] paths=['/Library/Frameworks/Python.framework/Versions/3.4/bin', '/usr/bin', '/bin', '/usr/sbin', '/sbin', '/usr/local/bin'] var='AR' -> '/usr/bin/ar'
ok
----------------------------------------
Checking for program python
/usr/bin/python
find program=['python'] paths=['/Library/Frameworks/Python.framework/Versions/3.4/bin', '/usr/bin', '/bin', '/usr/sbin', '/sbin', '/usr/local/bin'] var='PYTHON' -> '/usr/bin/python'
['/usr/bin/python', '-c', 'import sys\nfor x in sys.version_info: print(str(x))']
out: 2
7
5
final
0

----------------------------------------
Checking for python version
(2, 7, 5, 'final', 0)
from /Users/oe/Desktop/temp-cairo/pycairo: The python version is too old, expecting (3, 1, 0)
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