Linux software can use two types libraries static and shared

USING THE MAKE UTILITY 27

Phony Targets

rm *.o

rm foo

foo: foo.c

gcc foo.c -o foo

rm foo

Error Handling

Static libraries are extremely simple to create and use. Once you have created the object files you wish to package as a library, combine them with the ar command:

$ ar rcs something.a file1.o file2.o file3.o