Created Unassigned: SQLite.h not found fatal error on make [146]

Hello

I am a pi novice, following the stages of 'SBFspot install on a Raspberry pi' and have got to the make install_sqlite. I am using the 312 download file.
After just a couple of lines of output there is this output

df_SQLite.h:41:21: fatal error: sqlite3.h: No such file or directory
# include <sqlite3.h>

compilation terminated.

Looking at the contents of the directory sbfspot.3/SBFspot I can see no sqlite3.h file, although there is a db_ SQLite.h

Its many years (decades) since it tried compiling anything on unix. Is there anything I can do to fix this??

Regards
Ed