Pine Source Code This code is usually compiled by the "build" script in the directory above. It can be compiled by specifying the appropriate makefile for the platform you are running on with the make -f option. The makefile will select the correct os-xxx.h and os-xxx.c files from the osdep subdirectory. Pine depends on the c-client and pico libraries in adjacent directories. For more details and porting notes see doc/tech-notes.