So it seems I am damned if I do and damned if I don't. If I provide a location for the gmp/mpfr/mpc on the target system then the process blows up with a complaint "wrong machine". If I do not provide anything except the sources in tree then the process blows up because it can not find gmp.h. If I provide access to the headers then the process blows up because the libs themselves are missing. If I provide nothing at all for gmp/mpfr/mpc anywhere at all and not in the source tree then the process blows up in libiberty. No idea what the correct "magic" is but it is magic. Nothing less. Any hints? Now I see : checking for objdir... .libs checking for the correct version of gmp.h... yes checking for the correct version of mpfr.h... yes checking for the correct version of mpc.h... yes checking for the correct version of the gmp/mpfr/mpc libraries... no configure: error: Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+. Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify their locations. Source code for these libraries can be found at their respective hosting sites as well as at ftp://gcc.gnu.org/pub/gcc/infrastructure/. See also http://gcc.gnu.org/install/prerequisites.html for additional info. If you obtained GMP, MPFR and/or MPC from a vendor distribution package, make sure that you have installed both the libraries and the header files. They may be located in separate packages. vesta_$ That IS WITH the gmp/mpfr/mpc sources inside the gcc source tree as recommended. -- Dennis Clarke RISC-V/SPARC/PPC/ARM/CISC UNIX and Linux spoken GreyBeard and suspenders optional
