try to  patch cingg like this:

diff --git a/cinelerra-5.1/opencv_build b/cinelerra-5.1/opencv_build
index 7be18228..49056989 100644
--- a/cinelerra-5.1/opencv_build
+++ b/cinelerra-5.1/opencv_build
@@ -105,6 +105,7 @@ $(opencv)/build: $(opencv).src
   -DWITH_IPP=OFF \
   -DWITH_LAPACK=OFF \
   -DWITH_GPHOTO2=OFF \
+ -DWITH_JASPER=OFF \
   -DBUILD_SHARED_LIBS=ON \
   -DINSTALL_C_EXAMPLES=ON \
   -DINSTALL_PYTHON_EXAMPLES=ON \
$

and see if opencv build proceed to  actually 100% mark w/o errors.