Comment 1 for bug 1146637

It currently FTBFS on raring:

dh build --with python3
   dh_testdir
   debian/rules override_dh_auto_configure
make[1]: Entering directory `/«PKGBUILDDIR»'
dh_auto_configure -- -DBUILD_DOC_SUPPORT=ON
-- The C compiler identification is GNU 4.7.2
-- The CXX compiler identification is GNU 4.7.2
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.26")
-- Found PythonInterp: /usr/bin/python3.2 (found suitable version "3.2.3", required is "3.2")
CMake Error at config/FindPythonLibs.cmake:179 (STRING):
  string sub-command SUBSTRING requires four arguments.
Call Stack (most recent call first):
  CMakeLists.txt:29 (find_package)

CMake Error at config/FindPackageHandleStandardArgs.cmake:97 (MESSAGE):
  Could NOT find PythonLibs (missing: PYTHON_LIBRARIES) (Required is exact
  version "3.2")
Call Stack (most recent call first):
  config/FindPackageHandleStandardArgs.cmake:288 (_FPHSA_FAILURE_MESSAGE)
  config/FindPythonLibs.cmake:218 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:29 (find_package)

-- Configuring incomplete, errors occurred!
dh_auto_configure: cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_VERBOSE_MAKEFILE=ON -DBUILD_DOC_SUPPORT=ON returned exit code 1
make[1]: *** [override_dh_auto_configure] Error 2
make[1]: Leaving directory `/«PKGBUILDDIR»'
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2