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Tue, 2 Jun 2020 06:40:45 -0400 (EDT) From: Thomas Monjalon <thomas@monjalon.net> To: Omar Cardona <ocardona@microsoft.com>, Neil Horman <nhorman@tuxdriver.com> Cc: Fady Bader <fady@mellanox.com>, "dev@dpdk.org" <dev@dpdk.org>, "tbashar@mellanox.com" <tbashar@mellanox.com>, "talshn@mellanox.com" <talshn@mellanox.com>, "yohadt@mellanox.com" <yohadt@mellanox.com>, "dmitry.kozliuk@gmail.com" <dmitry.kozliuk@gmail.com>, Harini Ramakrishnan <Harini.Ramakrishnan@microsoft.com>, "pallavi.kadam@intel.com" <pallavi.kadam@intel.com>, "ranjit.menon@intel.com" <ranjit.menon@intel.com>, "olivier.matz@6wind.com" <olivier.matz@6wind.com>, "arybchenko@solarflare.com" <arybchenko@solarflare.com>, "mdr@ashroe.eu" <mdr@ashroe.eu> Date: Tue, 02 Jun 2020 12:40:44 +0200 Message-ID: <2183772.jD3h1DLmXV@thomas> In-Reply-To: <20200602102722.GA273284@hmswarspite.think-freely.org> References: <20200601103139.8612-1-fady@mellanox.com> <CY4PR21MB027724067ACCA896F964B37EDA8A0@CY4PR21MB0277.namprd21.prod.outlook.com> <20200602102722.GA273284@hmswarspite.think-freely.org> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Subject: Re: [dpdk-dev] [EXTERNAL] Re: [PATCH v2 1/4] eal: disable function versioning on Windows X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org Sender: "dev" <dev-bounces@dpdk.org> 02/06/2020 12:27, Neil Horman: > On Mon, Jun 01, 2020 at 09:46:18PM +0000, Omar Cardona wrote: > > >> Do we know if we have future plans of supporting dlls on windows in the future? > > - Hi Neil, yes this is of interest to us (Windows). > > - Specifically to aid in non-disruptive granular servicing/updating. > > - Our primary scenario Userspace VMSwitch is biased towards shared libraries for production servicing > > > Ok, do you have recommendations on how to provide backwards compatibility > between dpdk versions? From what I read the most direct solution would be > per-application dll bundling (which seems to me to defeat the purpose of > creating a dll, but if its the only solution, perhaps thats all we have to work > with). Is there a better solution? > > If not, then I would suggest that, instead of disabling shared libraries on > Windows, as we do below, we allow it, and redefine VERSION_SYMBOL[_EXPERIMENTAL] > to do nothing, and implement BIND_DEFAULT_SYMBOL to act like MAP_STATIC_SYMBOL > by aliasing the supplied symbol name to the provided export name. I think msvc > supports aliasing, correct? We don't use msvc, but clang and MinGW.