diff -Naur alembic-1.7.1.old/lib/Alembic/CMakeLists.txt alembic-1.7.1/lib/Alembic/CMakeLists.txt
--- alembic-1.7.1.old/lib/Alembic/CMakeLists.txt	2017-04-25 15:04:35.864979061 +0200
+++ alembic-1.7.1/lib/Alembic/CMakeLists.txt	2017-04-25 15:06:39.804139577 +0200
@@ -61,7 +61,9 @@
     )
 
 IF (ALEMBIC_SHARED_LIBS)
-  SET_TARGET_PROPERTIES(Alembic PROPERTIES DEFINE_SYMBOL ALEMBIC_EXPORTS)
+  SET_TARGET_PROPERTIES(Alembic PROPERTIES DEFINE_SYMBOL ALEMBIC_EXPORTS
+  SOVERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+  VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH})
 ENDIF()
 
 TARGET_LINK_LIBRARIES(Alembic ${ALEMBIC_ILMBASE_LIBS})