Error 15 Occurred at Call Library Function Node in NI Linux RT

Updated Jan 29, 2021

Issue Details

When I am using Call Library Function Node to call a .so shared library in NI Linux RT target, the following error is reported:
Error 15 occurred at Call Library Function Node in Test.vi

Possible reason(s):

LabVIEW: (Hex 0xF) Resource not found.
=========================
Serial poll byte queue overflow.

Solution

You might have configured a Function Name in Call Library Function Node that is not exported by the shared library. You can access the shell  and check the exported function by calling nm -D  <FileName>.so
If -bash: nm: command not found is returned, connect the NI Linux RT target to internet and call opkg install binutils to install the utility.