Support for "cannot find -lnpymath : python 3.8"

Author: irus987Created Dec 17, 2025Updated May 21, 2026

[ 96%] Building CXX object python/bindings_python_3.8/CMakeFiles/jetson-inference-python-38.dir/PySegNet.cpp.o [ 97%] Building CXX object python/bindings_python_3.8/CMakeFiles/jetson-inference-python-38.dir/PyTensorNet.cpp.o [ 98%] Building CXX object tools/camera-capture/CMakeFiles/camera-capture.dir/controlClassify.cpp.o [ 98%] Linking CXX shared library ../../aarch64/lib/python/3.8/jetson_inference_python.so [ 99%] Building CXX object tools/camera-capture/CMakeFiles/camera-capture.dir/controlDetection.cpp.o /usr/bin/ld: cannot find -lnpymath collect2: error: ld returned 1 exit status make[2]: *** [python/bindings_python_3.8/CMakeFiles/jetson-inference-python-38.dir/build.make:218: aarch64/lib/python/3.8/jetson_inference_python.so] Error 1 make[1]: *** [CMakeFiles/Makefile2:804: python/bindings_python_3.8/CMakeFiles/jetson-inference-python-38.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... [ 99%] Building CXX object tools/camera-capture/CMakeFiles/camera-capture.dir/controlWindow.cpp.o [100%] Linking CXX executable ../../aarch64/bin/camera-capture [100%] Built target camera-capture

I am trying to build from source as there is no docker container image available for Jetpack version 5.1.2. Ran into this error. I am using Xavier NX.

Source: dusty-nv/jetson-inference