aocl install fails with compile error

I was able to successfully install with Ubuntu 16.04 kernel 4.15.0-72. A couple of points to possibly help others:

1. I had to continuously set the clock speed to 6M via jtagconfig, not just the one time as described in AN807. Everytime the board's power is cycled, the clock has to be reset to 6M.
2. aocl diagnose was failing the ICD tests but passing the BSP part. I found that the .icd files were not being copied to /etc/OpenCL/vendors by the install script, even though I was running as root with the aocl/quartus env set. After I manually copied $INTELFPGAOCLSDKROOT/icd/*.icd to /etc/OpenCL/vendors, the aocl diagnose ran successfully.