make doesn't seem to work

[geo7]

Didn't see a read me - ran make and got this :

$ make
cc -std=c99 -Wall -pedantic -Wextra -Werror    -c -o jshon.o jshon.c
jshon.c:9:21: fatal error: jansson.h: No such file or directory
 #include <jansson.h>
                     ^
compilation terminated.
make: *** [jshon.o] Error 1

[somasis]

You need to install jansson. If you already have it installed you're probably missing a "development" package or something from your distribution.