How do you install Uno?

[ab4359]

I'm getting this issue when trying to install under Ubuntu 16.04

gcc -DPC -ansi -Wall -m32 -ggdb -DCPP="\"gcc -E\"" -DBINDIR=\"/usr/local/bin/\" -o uno uno.c
In file included from /usr/include/stdio.h:27:0,
                 from uno.c:10:
/usr/include/features.h:367:25: fatal error: sys/cdefs.h: No such file or directory
compilation terminated.
makefile:69: recipe for target 'uno' failed
make: *** [uno] Error 1

[nimble-code]

i think installing this will get you those header files:
sudo apt-get --reinstall install libc6 libc6-dev