The original MLC++ sources are public domain. The new SGI MLC++ sources are research domain and may be used only for research purposes.
The current set of sources will compile on SGI's C++ Mongoose 7.X compilers for IRIX 6.2 and higher; they will also compile under Windows NT with VC++ and under g++ 220.127.116.11 or higher. They will not compile under Sun's SunPro 4.2 because the Sun compiler does not properly instantiate templates as defined by the ARM. Use g++ for Sun platforms.
MLC++ uses LEDA, a library of efficient data structures and algorithms. LEDA is educational/research domain and not public domain. Research institutes may freely copy it; commercial institutes can obtain it for a trial period.