CMake: edit python scripts if the host is built with python3

Replace "#!/usr/bin/env python" by "#!/usr/bin/env python3".

Author: Clement Champetier

applications/CMakeLists.txt

@@ -3,3 +3,16 @@ add_subdirectory(sam)
 
 # scripts
 add_subdirectory(script)
+
+# Edit python scripts if the host is built with python3
+if(${TUTTLE_PYTHON_VERSION} VERSION_GREATER "3")
+    set(BASH_PYTHON2 "#!/usr/bin/env python")
+    set(BASH_PYTHON3 "#!/usr/bin/env python3")
+
+    file(GLOB_RECURSE PYTHON_APPS sam/*.py script/*.py)
+    foreach(PYTHON_APP ${PYTHON_APPS})
+        file(READ "${PYTHON_APP}" APP_CONTENT_PYTHON2)
+        string(REGEX REPLACE ${BASH_PYTHON2} ${BASH_PYTHON3} APP_CONTENT_PYTHON3  "${APP_CONTENT_PYTHON2}" )
+        file(WRITE "${PYTHON_APP}" "${APP_CONTENT_PYTHON3}")
+    endforeach()
+endif()

libraries/tuttle/CMakeLists.txt

@@ -131,6 +131,7 @@ if (TuttleBoost_FOUND)
 
     # Find python c libs
     find_package(PythonLibs ${TUTTLE_PYTHON_VERSION})
+    set(TUTTLE_PYTHON_VERSION ${PYTHONLIBS_VERSION_STRING})
     include_directories(${PYTHON_INCLUDE_DIRS})
 
     # Numpy