Mini-XML provides a single header file which you include:
#include <mxml.h>
The Mini-XML library is included with your program using the -lmxml option:
gcc -o myprogram myprogram.c -lmxml ENTER
If you have the pkg-config(1) software installed, you can use it to determine the proper compiler and linker options for your installation:
pkg-config --cflags mxml ENTER
pkg-config --libs mxml ENTER