After installation you can locate the icon to run the Program in a directory structure "R\R3.2.2\bin\i386\Rgui.exe" under the Windows Program Files. Clicking this icon brings up the R-GUI which is the R console to do R Programming.
That is all there is to it! The simple dgcc wrapper script makes it easy to compile and link programs in both binary and decimal floating-point arithmetic, and ensures that none of the installation details need be known anywhere else on your system. The fact that loader flags and a link-time library are specified is harmless when you are just doing test compilations with commands like dgcc -c myfile.c.
Some 64-bit distributions have abandoned the 32-bit world, while others continue to support both. The --enable-multilib option selects the more general latter choice, and is of little consequence, except for some extra filesystem space, on 64-bit-only systems. Whenever possible, we build gcc with multilib support, so that user code can be compiled with either -m32 or -m64 options. The one effect that this has on end-user sites is that for 32-bit compilations, it is necessary to have the 32-bit C library and header files installed. Those packages have names like glibc.i686, glibc-devel.i686, and glibc-headers.i686 on Red Hat family systems. On OpenSUSE systems, they are called glibc-devel-32bit and glibc-utils-32bit. On Debian-family systems, including Ubuntu, libc6-dev:i386 suffices.
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