"Monarch South" <southmonarch@msn.com> writes: hi, everyone! I am trying to complie gmp in true 64-bit Dec alpha, but failure. The difference is the name of compliler in alpha is "cxx", sizeof(long double)=16,sizeof(double)=8, is there anyone have done it well? please tell me. You need to either, 1. Use gcc/g++ 2. Omit --enable-cxx when configuing -- Torbjörn