librealsense: T265 - Illegal Instruction - Raspberry Pi Zero

Required Info
Camera Model	T265
Firmware Version	NA
Operating System & Version	Linux
Kernel Version (Linux Only)	4.14.98+
Platform	Raspberry Pi Zero W
SDK Version	2.19.1
Language	C++
Segment	VR/AR/others

Issue Description

Getting Illegal Instruction after trying to execute example: rs-pose.cpp on raspberry pi zero W. This example runs fine on raspberry pi 3 B+. Built librealsense based on https://github.com/IntelRealSense/librealsense/blob/development/doc/installation_raspbian.md omitted OpenCV section. Built with no errors on both pi 3 B+ and pi zero W.

GDB debugger: Program received signal SIGILL, Illegal instruction. std::vector<librealsense::float3, std::allocatorlibrealsense::float3 >::_M_default_append (__n=4001, this=0xb6f05d1c librealsense::jet+24)

Line 565 in /usr/include/c++/6/bits/vector.tcc

Can someone suggest how to solve this issue or suggest how to further debug the problem?

As a test, I created the following minimal hello world program compiled with librealsense and I still get the same illegal instruction upon execution:

-----hello.cpp----------------------- #include <librealsense2/rs.hpp> #include <iostream> int main(int argc, char * argv[]) { std::cout << "Hello World\r" ; return EXIT_SUCCESS; }

------CMakeLists.txt--------------- cmake_minimum_required(VERSION 3.1.0) project(Hello) find_package( realsense2 REQUIRED ) set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD_REQUIRED TRUE) set(DEPENDENCIES realsense2) add_executable( ${PROJECT_NAME} hello.cpp ) target_link_libraries(${PROJECT_NAME} ${DEPENDENCIES})