On Wed, 28 Jul 2021, 09:32 Chang M. Kang via Gcc-help, <gcc-help@xxxxxxxxxxx> wrote: > Dear Sir, > > I am working on MCNP6 Monte Carlo Transport Code, which can be compiled > by using gfortran Version 4.8.5 through 6.4.0. > > - I located and downloaded a gcc 4.8.5 package from a mirror site. > > - I installed Cygwin using setup-x86_64.exe on Window 10 computer. This > Cygwin includes cygwin-devel 3.2.0 and gcc-fortran 9.3.0. > > Please let me know how to build a gcc in Cygwin with gfortran > 4.8.5 replacing gfortran 9.3.0. > Don't replace it, add it as another compiler in a separate directory. Why not install version 6.4.0 instead of the ancient 4.8.5? https://gcc.gnu.org/wiki/Installing GCC > With best regards, > > CM Kang >
