Dear Sir, I have downloaded NTL 5.3.2 and I have configured it with the command $ ./configure NTL_GMP_LIP=on NTL_STD_CXX=on GMP_PREFIX=/usr/local Doing `make' proceeds fine, even though the MakeDesc command seems to print the wrong version number: $ make make setup1 make[1]: Entering directory `/usr/local/distrib/ntl-5.3.2/src' gcc -I../include -I. -O2 -c MakeDescAux.c gcc -I../include -I. -O2 -o MakeDesc MakeDesc.c MakeDescAux.o -lm ./MakeDesc This is NTL version 5.3.1 GOOD NEWS: compatible machine. summary of machine characteristics: bits per long = 32 bits per int = 32 bits per size_t = 32 arith right shift = yes double precision = 53 NBITS (maximum) = 30 single mul ok = yes register double precision = 64 double rounding detected = yes -- auto x86 fix mv mach_desc.h ../include/NTL/mach_desc.h [...] When I do `make check', the process arrives to the following point [...] running LLLTest LLL_FP...0 LLL_QP...0.02 LLL_XD...0.03 LLL_RR...0.18 G_LLL_FP...0.01 G_LLL_QP...0.07 G_LLL_XD...0.07 G_LLL_RR...0.52 LLL...0.01 LLLTest OK --------------------------------- making subset make[1]: Entering directory `/usr/local/distrib/ntl-5.3.2/src' g++ -I../include -I. -O2 -o subset subset.c ntl.a -L/usr/local/lib -lgmp -lm make[1]: Leaving directory `/usr/local/distrib/ntl-5.3.2/src' subset 40 40 20 10 999999 f n: b: size: prune: seed: alg [fqQxr]: + and then sits there for ages. On my machine, an Athlon 2800 running Red Hat Linux 9, the `subset' process is running since almost 5 hours now. I am using GCC 3.4.1 and GMP 4.3.1. Have you any idea what the problem may be? Thanks a lot, Roberto -- Prof. Roberto Bagnara Computer Science Group Department of Mathematics, University of Parma, Italy http://www.cs.unipr.it/~bagnara/ mailto:bagnara@cs.unipr.it