I thought I got all of the host dependencies installed, but evidently I am doing something wrong.  I am building on Debian 9 (x86_64) system.  I ran the init script from the build directory with the –DPLATFORM=x86_64 and –DSIMULATION=0 options.  I then ran ninja with no options.  Please find attached the output of running these 2 steps.  I’d appreciate a gentle nudge in the right direction.