What does it mean – lg2c is not found during run of binary distributions on some platforms?
Some packages of SALOME needs FORTRAN compiler. Pre compiled binary distribution is linked with it, however on some systems this RPM package is absent. It is necessary to install it additionally. If you compile SALOME from sources, it may use other FORTRAN compiler, native for your system, for example gfortran on Mandriva 2006 64 bit.