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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: support for Cortex-M7 in GNAT-GPL?
Date: Thu, 16 Jul 2015 20:12:24 +0100
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Date: 2015-07-16T20:12:24+01:00
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0x00080000@gmail.com writes:

> As such, I'm still puzzled whether this version of gnat does indeed
> has support for the Cortex-M7 or not. Did anybody on this forum
> already tried this out?

Since it says "unrecognized argument in option '-mcpu=cortex-m7'" I
guess not.

> Side thought:
> both the Cortex-M4 and Cortex-M7 are based on the ARMv7-M ISA.
> As such, specifying -mcpu=cortex-m4 just might work out fine
> Despite this observation, recent versions of gcc do seem to insist on
> using -mcpu=cortex-m7 (?)

GCC 5.1.0 built with --with-arch=armv7 --with-mode=thumb doesn't allow
-mcpu=cortex-m7.

But you could try -march=armv7e-m; accepted on FSF and GNAT GPL, though
since my RTS is presently for cortex-m3 I got

gnat1: warning: switch -mcpu=cortex-m3 conflicts with -march=armv7e-m switch