Continues migration with DDS, Common

Lts/Common/LtsBotan/CMakeLists.txt

@@ -0,0 +1,12 @@
+find_package(Botan2)
+
+if (BOTAN_FOUND AND CMAKE_VERSION VERSION_GREATER 3.15.9) # botan doesn't use cmake, make it a cmake target | imported targets don't work correctly with 3.10
+  add_library(LtsBotan STATIC IMPORTED GLOBAL)
+  set_target_properties(LtsBotan PROPERTIES IMPORTED_LOCATION ${BOTAN_LIBRARIES})
+  set_target_properties(LtsBotan PROPERTIES INCLUDE_DIRECTORIES ${BOTAN_INCLUDE_DIRS})
+  target_compile_definitions(LtsBotan INTERFACE BOTAN_FOUND)
+  target_include_directories(LtsBotan SYSTEM INTERFACE ${BOTAN_INCLUDE_DIRS})
+  set(LTS_BOTAN LtsBotan)
+
+  message(STATUS "BOTAN_INCLUDE_DIRS = ${BOTAN_INCLUDE_DIRS}, BOTAN_LIBRARIES = ${BOTAN_LIBRARIES}, LTS_BOTAN = ${LTS_BOTAN}")
+endif()