...
To see where Circos looks for the file, use
circos -debug_flag io
To see how configuration files work, create the example image, whose
configuration and data are found in example/. From the Circos distribution
directory,
cd example
../bin/circo...
...yeschecking for sys/types.h... yeschecking for unistd.h... yeschecking for _Bool... nochecking for stdbool.h that conforms to C99... yeschecking for error_at_line... yeschecking for gcc... gccchecking whether the compiler supports GNU C... yeschecking whether gcc accepts -g... yeschecking for gcc op...