as it turns out, this was actually a problem with the makefile, not the utils.h macro...
-rw-r--r-- 759 COPYING
-rw-r--r-- 17981 LICENSE.txt
-rw-r--r-- 473 Makefile
drwxr-xr-x - bin
drwxr-xr-x - doc
drwxr-xr-x - examples
drwxr-xr-x - include
-rw-r--r-- 815 install.conf
drwxr-xr-x - src