gentoo-overlay/dev-util/cmake/files/cmake-2.8.10.2-FindPythonInterp.patch

--- Modules/FindPythonInterp.cmake
+++ Modules/FindPythonInterp.cmake
@@ -60,6 +60,10 @@
 
 list(APPEND _Python_NAMES python)
 
+if (CMAKE_BUILD_TYPE STREQUAL Gentoo)
+    set(_Python_NAMES python)
+endif()
+
 # Search for the current active python version first
 find_program(PYTHON_EXECUTABLE NAMES ${_Python_NAMES})
 
@@ -76,7 +80,7 @@
 unset(_PYTHON3_VERSIONS)
 
 # Search for newest python version if python executable isn't found
-if(NOT PYTHON_EXECUTABLE)
+if(NOT PYTHON_EXECUTABLE AND NOT CMAKE_BUILD_TYPE STREQUAL Gentoo)
     foreach(_CURRENT_VERSION ${_Python_VERSIONS})
       set(_Python_NAMES python${_CURRENT_VERSION})
       if(WIN32)