Allow for no opt flow

components/operators/CMakeLists.txt

-add_library(ftloperators
+set(OPERSRC
 	src/smoothing.cpp
 	src/smoothing.cu
 	src/mls.cu
@@ -10,9 +10,14 @@ add_library(ftloperators
 	src/filling.cu
 	src/segmentation.cu
 	src/segmentation.cpp
-	src/nvopticalflow.cpp
 )
 
+if (HAVE_OPTFLOW)
+	list(APPEND OPERSRC src/nvopticalflow.cpp)
+endif()
+
+add_library(ftloperators ${OPERSRC})
+
 # These cause errors in CI build and are being removed from PCL in newer versions
 # target_compile_options(ftlrender PUBLIC ${PCL_DEFINITIONS})
 

components/rgbd-sources/src/sources/stereovideo/stereovideo.cpp

@@ -2,7 +2,10 @@
 #include "stereovideo.hpp"
 
 #include <ftl/configuration.hpp>
+
+#ifdef HAVE_OPTFLOW
 #include <ftl/operators/opticalflow.hpp>
+#endif
 
 #include <ftl/threads.hpp>
 #include "calibrate.hpp"