After downloading Miniconda, in a unix shell (Linux, Mac), run cd DOWNLOAD_DIR chmod +x Miniconda3-latest-VERSION.sh.The compile time and runtime differences are likely to be negligable. Re: Update gcc and gfortran The possible advantages would be reduced compile time, reduced runtime or bug fixes.Can be used together with an IDE (like Code::Blocks) or the MSYS2 shell if you need. This is a standalone personal build, which means this download offers a complete compiler environment for Windows. Windows version of the free open source GCC (GNU Compiler Collection) compiler for C and C++ (and other languages like Objective-C, Fortran, D).The version of gcc I'm trying to compile is 4.2.1, and my operating system is kubuntu. The configuration correctly identified my system as a 64-bit system. I looked at the output from the compilation and found the -m32 option sent to the compiler which means that gcc (or at least part of it) is being compiled for a 32-bit system.