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[Bug driver/81519] Enhancement: Add --help=target-distcc or similar to dump clean, optimal CFLAGS without using -march=native
- From: "marxin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 08 Aug 2017 08:35:43 +0000
- Subject: [Bug driver/81519] Enhancement: Add --help=target-distcc or similar to dump clean, optimal CFLAGS without using -march=native
- Auto-submitted: auto-generated
- References: <bug-81519-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81519
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Ok, so I've briefly investigated source code and providing such information is
definitely not a simple task :/
I would recommend to fix PR39851 and then one will just compare output of
following 2 invocations:
gcc --help=target -Q
gcc --help=target -march=native -Q
Will it work for you?
Note that fully understand which ISA extensions are enable when is also quite
complex.