-## Troubleshooting
-
-1. Example program crashes with SIGILL (Illegal instruction).
-
- Your CPU probably doesn't support AVX instructions which is used by dlib.
- You can confirm this by running
-
- grep avx /proc/cpuinfo
-
- If this is the case, try to find out if your CPU supports SSE4 or SSE2,
- then edit "build.sh" and "example/demo.patch" to change
- `USE_AVX_INSTRUCTIONS=1` to `USE_SSE4_INSTRUCTIONS=1` or
- `USE_SSE2_INSTRUCTIONS=1`.
-