Error when compiling C code contining sprng.h

I downloaded and installed SPRNG 2.0 for using in my C code. For learning, I started by trying with the simple example code found here: http://ift.tt/1Zr4Wut but got the error message

/tmp/ccEQRNKd.o: In function main': simple-simple.c:(.text+0x1c): undefined reference toget_rn_dbl_simple'

when I tried to compile it. Now I don't know how to proceed. Thankful for help.