diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2f564a05f..1816ceaad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -226,14 +226,17 @@ if (STORM_COMPILER_CLANG OR STORM_COMPILER_APPLECLANG)
     set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-export_dynamic")
     set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-export_dynamic")
 elseif (STORM_COMPILER_GCC)
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
-    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -flto -fprefetch-loop-arrays -ffast-math -fno-finite-math-only")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
+    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fprefetch-loop-arrays -ffast-math -fno-finite-math-only")
     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -rdynamic")
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -rdynamic")
 endif ()
 
 if (STORM_USE_LTO)
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -flto")
+    message(STATUS "Storm - Enabling link-time optimizations.")
+else()
+    message(STATUS "Storm - Disabling link-time optimizations.")
 endif()
 
 # In release mode, we turn on even more optimizations if we do not have to provide a portable binary.
diff --git a/src/storm/storage/dd/DdManager.cpp b/src/storm/storage/dd/DdManager.cpp
index 361594a4b..b9f0df1be 100644
--- a/src/storm/storage/dd/DdManager.cpp
+++ b/src/storm/storage/dd/DdManager.cpp
@@ -467,6 +467,7 @@ namespace storm {
         template Add<DdType::Sylvan, double> DdManager<DdType::Sylvan>::getConstant(double const& value) const;
         template Add<DdType::Sylvan, uint_fast64_t> DdManager<DdType::Sylvan>::getConstant(uint_fast64_t const& value) const;
 #ifdef STORM_HAVE_CARL
+        template Add<DdType::Sylvan, storm::RationalNumber> DdManager<DdType::Sylvan>::getConstant(storm::RationalNumber const& value) const;
 		template Add<DdType::Sylvan, storm::RationalFunction> DdManager<DdType::Sylvan>::getConstant(storm::RationalFunction const& value) const;
 #endif