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Mon, 17 Nov 2025 12:38:51 -0800 (PST) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Nick Briggs , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Li Zhijian , Kostiantyn Kostiuk , Peter Xu , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Andrew Deason , Eric Blake , Michael Roth , Paolo Bonzini , Peter Maydell , qemu-arm@nongnu.org, Mark Cave-Ayland Subject: [PATCH-for-10.2 2/3] migration/rdma: Check ntohll() availability with meson Date: Mon, 17 Nov 2025 21:38:33 +0100 Message-ID: <20251117203834.83713-3-philmd@linaro.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251117203834.83713-1-philmd@linaro.org> References: <20251117203834.83713-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32a; envelope-from=philmd@linaro.org; helo=mail-wm1-x32a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1763411970812153000 Commit 44ce1b5d2fc ("migration/rdma: define htonll/ntohll only if not predefined") tried to only include htonll/ntohll replacements when their symbol is *defined*, but this doesn't work, as they aren't: ../migration/rdma.c:242:17: error: static declaration of 'htonll' follows= non-static declaration 242 | static uint64_t htonll(uint64_t v) | ^~~~~~ In file included from /usr/include/netinet/in.h:73, from /usr/include/sys/socket.h:32, from /home/f4bug/qemu/include/system/os-posix.h:30, from /home/f4bug/qemu/include/qemu/osdep.h:176, from ../migration/rdma.c:17: /usr/include/sys/byteorder.h:75:18: note: previous declaration of 'htonll= ' with type 'uint64_t(uint64_t)' {aka 'long unsigned int(long unsigned int)= '} 75 | extern uint64_t htonll(uint64_t); | ^~~~~~ ../migration/rdma.c:252:17: error: static declaration of 'ntohll' follows= non-static declaration 252 | static uint64_t ntohll(uint64_t v) | ^~~~~~ /usr/include/sys/byteorder.h:76:18: note: previous declaration of 'ntohll= ' with type 'uint64_t(uint64_t)' {aka 'long unsigned int(long unsigned int)= '} 76 | extern uint64_t ntohll(uint64_t); | ^~~~~~ Better to check the symbol availability with meson. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Acked-by: Peter Xu Reviewed-by: Richard Henderson --- meson.build | 1 + migration/rdma.c | 4 +--- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/meson.build b/meson.build index df4460035c3..72edd6097a4 100644 --- a/meson.build +++ b/meson.build @@ -2663,6 +2663,7 @@ config_host_data.set('CONFIG_SYNCFS', cc.has_function= ('syncfs')) config_host_data.set('CONFIG_SYNC_FILE_RANGE', cc.has_function('sync_file_= range')) config_host_data.set('CONFIG_TIMERFD', cc.has_function('timerfd_create')) config_host_data.set('CONFIG_GETLOADAVG', cc.has_function('getloadavg')) +config_host_data.set('CONFIG_ARPA_INET_64', cc.has_function('htonll')) config_host_data.set('HAVE_COPY_FILE_RANGE', cc.has_function('copy_file_ra= nge')) config_host_data.set('HAVE_GETIFADDRS', cc.has_function('getifaddrs')) config_host_data.set('HAVE_GLIB_WITH_SLICE_ALLOCATOR', glib_has_gslice) diff --git a/migration/rdma.c b/migration/rdma.c index 2d839fce6c4..337b4158899 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -238,7 +238,7 @@ static const char *control_desc(unsigned int rdma_contr= ol) return strs[rdma_control]; } =20 -#if !defined(htonll) +#if !defined(CONFIG_ARPA_INET_64) static uint64_t htonll(uint64_t v) { union { uint32_t lv[2]; uint64_t llv; } u; @@ -246,9 +246,7 @@ static uint64_t htonll(uint64_t v) u.lv[1] =3D htonl(v & 0xFFFFFFFFULL); return u.llv; } -#endif =20 -#if !defined(ntohll) static uint64_t ntohll(uint64_t v) { union { uint32_t lv[2]; uint64_t llv; } u; --=20 2.51.0