From: Simon Marchi <simon.marchi@polymtl.ca>
To: Pedro Alves <palves@redhat.com>
Cc: Alan Hayward <Alan.Hayward@arm.com>,
GDB Patches <gdb-patches@sourceware.org>,
Simon Marchi <simon.marchi@ericsson.com>, nd <nd@arm.com>
Subject: Re: [PATCH v2 02/10] Add Aarch64 SVE Linux headers
Date: Tue, 12 Jun 2018 15:21:00 -0000 [thread overview]
Message-ID: <d9747b61fb95f9d4f2e7eb30e1227654@polymtl.ca> (raw)
In-Reply-To: <0f4bd1b7-897f-b42a-3067-2397a1b4c58c@redhat.com>
On 2018-06-12 11:11, Pedro Alves wrote:
> On 06/12/2018 04:06 PM, Simon Marchi wrote:
>> I think that would be a good compromise. By default, building on a
>> machine with an older kernel would exclude SVE support. But it would
>> be possible to add it by pointing to the headers of a recent kernel.Â
>> So when building on a machine with an older kernel...
>>
>> - ... without any special flags, you don't get SVE support.
>> - ... with just --enable-sve, you get a configure error.
>> - ... with --enable-sve and CFLAGS/CXXFLAGS pointing to headers of a
>> kernel w/ SVE macros, you get SVE support.
>>
>> Does that make sense?
> Yes. Not sure an --enable-sve switch is necessary (compared to just
> having
> headers vs not having headers), but I'd be fine with having one.
I think it is useful if you want to make sure your build will have the
support:
- auto/not specified: include the support if the prerequisites are
available
- enable: include the support, error at configure if prerequisites are
missing
- disable: don't include the support
Otherwise, just a typo in your include path can result in a build
without the feature you want, and you only discover it later, that's
annoying.
Simon
next prev parent reply other threads:[~2018-06-12 15:21 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-06 15:16 [PATCH v2 00/10] gdb/gdbserver support for aarch64 SVE Alan Hayward
2018-06-06 15:17 ` [PATCH v2 03/10] Add reg_buffer_common Alan Hayward
2018-06-07 20:19 ` Simon Marchi
2018-06-07 20:42 ` Simon Marchi
2018-06-08 14:14 ` Alan Hayward
2018-06-10 22:21 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 04/10] Add regcache raw_compare method Alan Hayward
2018-06-07 20:56 ` Simon Marchi
2018-06-08 15:16 ` Alan Hayward
2018-06-10 22:26 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 08/10] Enable Aarch64 SVE for gdbserver Alan Hayward
2018-06-11 0:49 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 10/10] Remove reg2 section from Aarch64 SVE cores Alan Hayward
2018-06-11 2:47 ` Simon Marchi
2018-06-11 16:37 ` Alan Hayward
2018-06-06 15:17 ` [PATCH v2 05/10] Ptrace support for Aarch64 SVE Alan Hayward
2018-06-10 22:52 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 06/10] Add Aarch64 SVE dwarf regnums Alan Hayward
2018-06-11 0:43 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 09/10] Ptrace support for AArch64 SVE gdbsever Alan Hayward
2018-06-11 2:43 ` Simon Marchi
2018-06-11 2:44 ` Simon Marchi
2018-06-06 15:17 ` [PATCH v2 02/10] Add Aarch64 SVE Linux headers Alan Hayward
2018-06-08 14:13 ` Alan Hayward
2018-06-08 14:37 ` Simon Marchi
2018-06-08 15:23 ` Simon Marchi
2018-06-12 14:37 ` Alan Hayward
2018-06-12 14:43 ` Pedro Alves
2018-06-12 15:06 ` Simon Marchi
2018-06-12 15:11 ` Pedro Alves
2018-06-12 15:21 ` Simon Marchi [this message]
2018-06-12 15:09 ` Alan Hayward
2018-06-12 14:51 ` Simon Marchi
2018-06-12 16:34 ` Sergio Durigan Junior
2018-06-12 17:51 ` Alan Hayward
2018-06-12 20:29 ` Sergio Durigan Junior
2018-06-15 9:45 ` Ramana Radhakrishnan
2018-06-15 17:14 ` Alan Hayward
2018-09-20 21:16 ` Status of the AArch* builders (was: Re: [PATCH v2 02/10] Add Aarch64 SVE Linux headers) Sergio Durigan Junior
2018-09-24 14:16 ` Alan Hayward
2018-09-24 14:42 ` Status of the AArch* builders Sergio Durigan Junior
2018-10-11 9:23 ` Alan Hayward
2018-10-12 19:06 ` Sergio Durigan Junior
2018-10-15 10:16 ` Alan Hayward
2018-10-15 12:42 ` Sergio Durigan Junior
2018-10-15 14:02 ` Alan Hayward
2018-10-15 15:32 ` Sergio Durigan Junior
2018-10-17 18:46 ` Sergio Durigan Junior
2018-10-24 9:56 ` Alan Hayward
2018-10-25 16:26 ` Sergio Durigan Junior
2018-06-08 15:27 ` [PATCH v2 02/10] Add Aarch64 SVE Linux headers Alan Hayward
2018-06-06 15:17 ` [PATCH v2 01/10] Aarch64 SVE pseudo register support Alan Hayward
2018-06-06 22:17 ` Simon Marchi
2018-06-07 9:34 ` Alan Hayward
2018-06-06 15:17 ` [PATCH v2 07/10] Increase gdbsever PBUFSIZ Alan Hayward
2018-06-11 0:46 ` Simon Marchi
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