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([2001:b07:6468:f312:11eb:3314:c22:e3c7]) by smtp.gmail.com with ESMTPSA id l3sm1640479wmh.27.2020.10.02.05.03.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 02 Oct 2020 05:03:54 -0700 (PDT) Subject: Re: [PATCH] meson.build: Don't look for libudev for static builds To: luoyonggang@gmail.com, Peter Maydell References: <20201002105239.2444-1-peter.maydell@linaro.org> From: Paolo Bonzini Message-ID: Date: Fri, 2 Oct 2020 14:03:53 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=63.128.21.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/01 23:37:29 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.256, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-level Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 02/10/20 13:15, 罗勇刚(Yonggang Luo) wrote: > So the better way is pkg-config handling sttaic properly？ The problem is that you cannot handle it properly. Consider for example libmultipath, which requires the program to define a couple functions for static linking to work. A compile-time check that the library works would fail, and therefore Meson (and configure) are just punting and declaring it a user configuration issue. Meson will warn about it, but it will proceed anyway. Paolo