[Xmame] Help - mmap & munmap trouble

[Nickos]

I was able to compile and run 0.99 Xmame on Zeta 1.x & BeOS Developer.   I wanted to do the same with the latest version #106 of Xmame, but I'm having trouble with mmap & munmap.   I am able to get to the part where it is "linking Xmame.SDL", right near the end, & while linking, I receive the following 2 errors.   undefined reference to mmap undefined reference to munmap   (in main.o)   I realize I'm missing mmap & munmap from my Zeta OS and want to figure out how I can get them installed.  I couldn't figure out how Linux uses them.   Are these header files?  Are they executionables?  Where are they normally found in Linux/BSD?  Where can I look at the source code?  How would I obtain & install them so I can finish my compile of Xmame 0.106?   Thanks,