On Sun, 10 Nov 2019 at 11:36, Israr Sayed <sd.israr@xxxxxxxxx> wrote: > > Digging into the sources of GCC I noticed in files gcc/config/arm/t-*, There are multiple arm target options. > > Reading [GCC internal Manual], These are called Target Makefile Fragments, which will be included in main Makefile, like MULTILIB_OPTIONS, MULTILIB_DIRNAMES, MULTILIB_MATCHES, MULTILIB_REQUIRED, MULTILIB_REUSE, MULTILIB_EXTRA_OPTS, MULTILIB_OSDIRNAMES, MULTIARCH_DIRNAME. > > What I am not able to understand that how to bring it in at the time of configure.Which option to choose? > > More over is it possible to edit those t-* files as per the requirement and how? > Please Help. I don't understand your question. Your email's subject talks about a single GCC executable for multiple ARM variants, which is supported automatically. When you configure GCC for an ARM target you can select the specific processor type using the -march and/or -mcpu options. See the documentation of command-line options in the GCC manual. You don't need to do anything special to use the target makefile fragments, they're used automatically, as needed.
