gistfile1.txt

kristof@kkristof:~/test$ gcc -lX11 x_mini.c -o xtut1
/tmp/cch1ggeR.o: In function `main':
x_mini.c:(.text+0x2d): undefined reference to `XOpenDisplay'
x_mini.c:(.text+0x157): undefined reference to `XCreateSimpleWindow'
x_mini.c:(.text+0x17c): undefined reference to `XSelectInput'
x_mini.c:(.text+0x195): undefined reference to `XMapWindow'
x_mini.c:(.text+0x1ae): undefined reference to `XNextEvent'
x_mini.c:(.text+0x223): undefined reference to `XCloseDisplay'
collect2: ld returned 1 exit status