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a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ashroe.eu; s=x; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:MIME-Version:Date: Message-ID:From:References:Cc:To:Subject:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=2tFpag1aouZN3c+YuN07Gb6ZgQIBzI4WMtJj6cHsd9A=; b=eUCWlNDOzJ5Cs8mDCt9ieh7HIG ofLdOfBpfU7Ri5h5ht9mq3pavSwlW6TbQ1CJkQdO6se9y/JR+jvDdEhkwZxVhsvgpwc87OiR5OHlT nuIGSEzRdlt5/m0G4OEC1baDMQtXsPy74H8BYMQiF9aSegQJ2z96yRh1YB/pph4LMg1Gigata+5d1 Hu9FbgyTJxHiEY+ijmYQY/3cF1BLhVaSRRSQLWt2egyLpdGRLqcLIWTxogrH0HWvhMYECrh05LGdj /1zvxW08il7lsaF+UsuGpTCXysMNCn+pA6Tnov02jrET489VZFhR8Ok4jicZ0e0P1eVSL9HgNeEhH WRXe+kWQ==; To: Thomas Monjalon , Conor Walsh Cc: dev@dpdk.org, david.marchand@redhat.com, ray.kinsella@intel.com, nhorman@tuxdriver.com, aconole@redhat.com, maicolgabriel@hotmail.com, bruce.richardson@intel.com References: <20200910142121.3995680-1-conor.walsh@intel.com> <20200911160332.256343-1-conor.walsh@intel.com> <6873366.jM3skLiTAc@thomas> From: "Kinsella, Ray" Autocrypt: addr=mdr@ashroe.eu; 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WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: <6873366.jM3skLiTAc@thomas> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-AuthUser: mdr@ashroe.eu Subject: Re: [dpdk-dev] [PATCH v3 0/4] abi breakage checks for meson X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" (apologies for re-sending, I missed the CC list the 1st time). Predictably perhaps, I disagree. On 14/09/2020 09:08, Thomas Monjalon wrote: > Hi, > >> This patchset allows developers to check ABI breakages during build >> time. >> Currently checking that the DPDK ABI has not changed before up-streaming >> code is not intuitive. The current method, requires the contributor to >> use either the test-build.sh and test-meson-build.sh tools, along side > > The contributor *MUST* test compilation with test-meson-build.sh in any case. > So I guess, you need to ask what the "user interface" is for DPDK. The reality is that is meson/ninja (or previously make) tooling is that interface. as it is most other places, dev's expect a familiar build system. >> some environmental variables to test their changes. Contributors in many > > It is just one variable to add to a file: > export DPDK_ABI_REF_VERSION=v20.11 > in ~/.config/dpdk/devel.config or dpdk/.develconfig It's a documentation heavy, non-obvious process. We need to consider UX, to make it as _easy_ as possible, integrated with the build system and automated. > >> cases are either unaware or unable to do this themselves, leading to a >> potentially serious situation where they are unknowingly up-streaming >> code that breaks the ABI. These breakages are then caught by Travis, but >> it is more efficient if this is caught locally before up-streaming. This is puzzling, complex compared to running a separate script to meson/ninja, and requiring that esoteric environment variables are set? > I think you are proposing a complex solution to a non-issue. > > And I don't understand how your method is more straight-forward > for the user, given this statement in your last patch: > " > This patch adds the ability to run ABI breakage checks to meson. > To do this the developer needs to set the meson build type to debug and > set the version of DPDK that they want to check the ABI against. > " > The developer can set the abi-check option to latest, and the build system will take care of the rest. The system even caches the debug symbols, so they don't need to be generated locally.