compile.txt

For files 
1.1.Read_data.c
and
1.2.Read_data.cpp

Need use the next source 
For SPI https://github.com/vsergeev/c-periphery

$ mkdir build
$ cd build
$ cmake ..
$ make

and our C file connected by 

$ gcc -I/path/to/periphery/src myprog.c /path/to/periphery/periphery.a -o myprog