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authorRolf Eike Beer <eike@sf-mail.de>2012-01-17 17:25:10 (GMT)
committerRolf Eike Beer <eike@sf-mail.de>2012-01-18 17:29:16 (GMT)
commit0fe4d69b6f5cfa4c2cd7afc6c0a42eb03638b712 (patch)
tree7a604180a3a698ee54815d28c482e7b95936f800 /Modules/FindPythonInterp.cmake
parentb2838626ddb451fbbffe0de5990d309696b28dfc (diff)
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FindPythonInterp: make version selectable
This allows the developer to tell FindPythonInterp which Python version should be searched for. This allows the right version to be chosen for a project without user assistance if there are specific requirements. This is especially useful as it is common to have major versions 2 and 3 installed in parallel, which are partly incompatible.
Diffstat (limited to 'Modules/FindPythonInterp.cmake')
-rw-r--r--Modules/FindPythonInterp.cmake41
1 files changed, 39 insertions, 2 deletions
diff --git a/Modules/FindPythonInterp.cmake b/Modules/FindPythonInterp.cmake
index a10ec23..128dcd5 100644
--- a/Modules/FindPythonInterp.cmake
+++ b/Modules/FindPythonInterp.cmake
@@ -26,14 +26,51 @@
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
+unset(_Python_NAMES)
+
+set(_PYTHON1_VERSIONS 1.6 1.5)
+set(_PYTHON2_VERSIONS 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0)
+set(_PYTHON3_VERSIONS 3.3 3.2 3.1 3.0)
+
+if(PythonInterp_FIND_VERSION)
+ if(PythonInterp_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
+ string(REGEX REPLACE "^([0-9]+\\.[0-9]+).*" "\\1" _PYTHON_FIND_MAJ_MIN "${PythonInterp_FIND_VERSION}")
+ string(REGEX REPLACE "^([0-9]+).*" "\\1" _PYTHON_FIND_MAJ "${_PYTHON_FIND_MAJ_MIN}")
+ list(APPEND _Python_NAMES python${_PYTHON_FIND_MAJ_MIN} python${_PYTHON_FIND_MAJ})
+ unset(_PYTHON_FIND_OTHER_VERSIONS)
+ if(NOT PythonInterp_FIND_VERSION_EXACT)
+ foreach(_PYTHON_V ${_PYTHON${_PYTHON_FIND_MAJ}_VERSIONS})
+ if(NOT _PYTHON_V VERSION_LESS _PYTHON_FIND_MAJ_MIN)
+ list(APPEND _PYTHON_FIND_OTHER_VERSIONS ${_PYTHON_V})
+ endif()
+ endforeach()
+ endif(NOT PythonInterp_FIND_VERSION_EXACT)
+ unset(_PYTHON_FIND_MAJ_MIN)
+ unset(_PYTHON_FIND_MAJ)
+ else(PythonInterp_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
+ list(APPEND _Python_NAMES python${PythonInterp_FIND_VERSION})
+ set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonInterp_FIND_VERSION}_VERSIONS})
+ endif(PythonInterp_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
+else(PythonInterp_FIND_VERSION)
+ set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS})
+endif(PythonInterp_FIND_VERSION)
+
+list(APPEND _Python_NAMES python)
+
# Search for the current active python version first
-find_program(PYTHON_EXECUTABLE NAMES python)
+find_program(PYTHON_EXECUTABLE NAMES ${_Python_NAMES})
# Set up the versions we know about, in the order we will search. Always add
# the user supplied additional versions to the front.
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)
+ ${_PYTHON_FIND_OTHER_VERSIONS}
+ )
+
+unset(_PYTHON_FIND_OTHER_VERSIONS)
+unset(_PYTHON1_VERSIONS)
+unset(_PYTHON2_VERSIONS)
+unset(_PYTHON3_VERSIONS)
# Search for newest python version if python executable isn't found
if(NOT PYTHON_EXECUTABLE)