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ot-br-posix: add recipe for an OpenThread Border Router
The OpenThread project is an open source implementation of the Thread low-power mesh network protocol. In a Thread network devices can have different roles, and of of these roles is a Border Router that allows a Thread network to be connected with other IP networks. Ot-br-posix runs as a systemd service on a standard Linux system to handle the connection to a Thread network. In terms of patches we need a fix to allow building on musl + clang (CMSG_NXTHDR macro triggers a -Wsign-compare warning) and a systemd unit file change is OE specific and avoids having service dependencies implemented as pre exec hooks. Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com> Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Stefan Schmidt
Khem Raj
parent
b9e440ead8
commit
bb6a70a463
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@ -0,0 +1,35 @@
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From ed60d4605b81c43b9ba9504a37835109c247c6f8 Mon Sep 17 00:00:00 2001
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From: Stefan Schmidt <stefan.schmidt@huawei.com>
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Date: Fri, 1 Apr 2022 21:46:03 +0200
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Subject: [PATCH] otbr-agent.service.in: remove pre exec hook for mdns service
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It uses the service command which is not available in all cases under
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Yocto/OE. The upstream project uses this mainly with Ubuntu and Raspian
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as testbeds.
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In our case we simply ensure that avahi-daemon is installed on the
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system inside the recipe.
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Upstream-Status: Inappropriate [OE specific]
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Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>
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---
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src/agent/otbr-agent.service.in | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/agent/otbr-agent.service.in b/src/agent/otbr-agent.service.in
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index 8314121347..4c97869def 100644
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--- a/src/agent/otbr-agent.service.in
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+++ b/src/agent/otbr-agent.service.in
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@@ -6,7 +6,7 @@ After=dbus.socket
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[Service]
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EnvironmentFile=-@CMAKE_INSTALL_FULL_SYSCONFDIR@/default/otbr-agent
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-@EXEC_START_PRE@ExecStart=@CMAKE_INSTALL_FULL_SBINDIR@/otbr-agent $OTBR_AGENT_OPTS
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+ExecStart=@CMAKE_INSTALL_FULL_SBINDIR@/otbr-agent $OTBR_AGENT_OPTS
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KillMode=mixed
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Restart=on-failure
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RestartSec=5
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--
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2.35.1
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@ -0,0 +1,131 @@
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From: Stefan Schmidt <stefan.schmidt@huawei.com>
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Subject: Turn off sign compare for musl libc
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When building with musl and clang the usage of CMSG_NXTHDR results in
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sign-compare error. Disable the check only in this specific part of the
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code with a #pragma.
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| /home/stefan/huawei/yocto-upstream/yoe/workspace/sources/ot-br-posix/third_party/openthread/repo/src/posix/platform/udp.cpp:147:28: fatal error: comparison of integers of different signs: 'unsigned long' and 'long' [-Wsign-compare]
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| cmsg = CMSG_NXTHDR(&msg, cmsg);
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| ^~~~~~~~~~~~~~~~~~~~~~~
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| /home/stefan/huawei/yocto-upstream/yoe/build/tmp/work/cortexa57-yoe-linux-musl/ot-br-posix/0.3.0+git999-r0/recipe-sysroot/usr/include/sys/socket.h:358:44: note: expanded from macro 'CMSG_NXTHDR'
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| __CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \
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| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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| 1 error generated.
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Idea and fix taken from
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recipes-devtools/breakpad/breakpad/0001-Turn-off-sign-compare-for-musl-libc.patch
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by Khem Raj.
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Upstream-Status: Inappropriate [OE specific]
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Signed-off-by: Stefan Schmidt <stefan.schmidt@huawei.com>
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diff --git a/src/backbone_router/nd_proxy.cpp b/src/backbone_router/nd_proxy.cpp
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index 7136878c3d..8a223c95c7 100644
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--- a/src/backbone_router/nd_proxy.cpp
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+++ b/src/backbone_router/nd_proxy.cpp
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@@ -185,9 +185,18 @@ void NdProxyManager::ProcessMulticastNeighborSolicition()
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VerifyOrExit(icmp6header->icmp6_type == ND_NEIGHBOR_SOLICIT, error = OTBR_ERROR_PARSE);
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otbrLogDebug("NdProxyManager: Received ND-NS from %s", src.ToString().c_str());
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-
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+#ifndef __GLIBC__
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+ // In musl-libc, CMSG_NXTHDR typecasts char* to cmsghdr* which causes
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+ // clang to throw sign-compare warning. This is to suppress the warning
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+ // inline.
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+ #pragma clang diagnostic push
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+ #pragma clang diagnostic ignored "-Wsign-compare"
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+#endif
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for (cmsghdr = CMSG_FIRSTHDR(&msghdr); cmsghdr; cmsghdr = CMSG_NXTHDR(&msghdr, cmsghdr))
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- {
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+#ifndef __GLIBC__
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+ #pragma clang diagnostic pop
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+#endif
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+ {
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if (cmsghdr->cmsg_level != IPPROTO_IPV6)
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{
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continue;
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Submodule third_party/openthread/repo contains modified content
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diff --git a/third_party/openthread/repo/src/posix/platform/infra_if.cpp b/third_party/openthread/repo/src/posix/platform/infra_if.cpp
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index 9f93d2b1c..1ed40fe50 100644
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--- a/third_party/openthread/repo/src/posix/platform/infra_if.cpp
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+++ b/third_party/openthread/repo/src/posix/platform/infra_if.cpp
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@@ -228,7 +228,17 @@ otError InfraNetif::SendIcmp6Nd(uint32_t aInfraIfIndex,
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packetInfo->ipi6_ifindex = mInfraIfIndex;
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// Per section 6.1.2 of RFC 4861, we need to send the ICMPv6 message with IP Hop Limit 255.
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+#ifndef __GLIBC__
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+ // In musl-libc, CMSG_NXTHDR typecasts char* to cmsghdr* which causes
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+ // clang to throw sign-compare warning. This is to suppress the warning
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+ // inline.
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+ #pragma clang diagnostic push
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+ #pragma clang diagnostic ignored "-Wsign-compare"
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+#endif
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cmsgPointer = CMSG_NXTHDR(&msgHeader, cmsgPointer);
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+#ifndef __GLIBC__
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+ #pragma clang diagnostic pop
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+#endif
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cmsgPointer->cmsg_level = IPPROTO_IPV6;
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cmsgPointer->cmsg_type = IPV6_HOPLIMIT;
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cmsgPointer->cmsg_len = CMSG_LEN(sizeof(hopLimit));
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@@ -481,7 +491,17 @@ void InfraNetif::ReceiveIcmp6Message(void)
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bufferLength = static_cast<uint16_t>(rval);
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+#ifndef __GLIBC__
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+ // In musl-libc, CMSG_NXTHDR typecasts char* to cmsghdr* which causes
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+ // clang to throw sign-compare warning. This is to suppress the warning
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+ // inline.
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+ #pragma clang diagnostic push
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+ #pragma clang diagnostic ignored "-Wsign-compare"
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+#endif
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for (cmh = CMSG_FIRSTHDR(&msg); cmh; cmh = CMSG_NXTHDR(&msg, cmh))
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+#ifndef __GLIBC__
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+ #pragma clang diagnostic pop
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+#endif
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{
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if (cmh->cmsg_level == IPPROTO_IPV6 && cmh->cmsg_type == IPV6_PKTINFO &&
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cmh->cmsg_len == CMSG_LEN(sizeof(struct in6_pktinfo)))
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diff --git a/third_party/openthread/repo/src/posix/platform/udp.cpp b/third_party/openthread/repo/src/posix/platform/udp.cpp
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index b7aacc5fa..a814fea70 100644
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--- a/third_party/openthread/repo/src/posix/platform/udp.cpp
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+++ b/third_party/openthread/repo/src/posix/platform/udp.cpp
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@@ -144,8 +144,18 @@ otError transmitPacket(int aFd, uint8_t *aPayload, uint16_t aLength, const otMes
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{
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struct in6_pktinfo pktinfo;
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+#ifndef __GLIBC__
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+ // In musl-libc, CMSG_NXTHDR typecasts char* to cmsghdr* which causes
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+ // clang to throw sign-compare warning. This is to suppress the warning
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+ // inline.
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+ #pragma clang diagnostic push
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+ #pragma clang diagnostic ignored "-Wsign-compare"
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+#endif
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cmsg = CMSG_NXTHDR(&msg, cmsg);
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- cmsg->cmsg_level = IPPROTO_IPV6;
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+#ifndef __GLIBC__
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+ #pragma clang diagnostic pop
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+#endif
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+ cmsg->cmsg_level = IPPROTO_IPV6;
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cmsg->cmsg_type = IPV6_PKTINFO;
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cmsg->cmsg_len = CMSG_LEN(sizeof(pktinfo));
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@@ -200,7 +210,17 @@ otError receivePacket(int aFd, uint8_t *aPayload, uint16_t &aLength, otMessageIn
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VerifyOrExit(rval > 0, perror("recvmsg"));
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aLength = static_cast<uint16_t>(rval);
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+#ifndef __GLIBC__
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+ // In musl-libc, CMSG_NXTHDR typecasts char* to cmsghdr* which causes
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+ // clang to throw sign-compare warning. This is to suppress the warning
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+ // inline.
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+ #pragma clang diagnostic push
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+ #pragma clang diagnostic ignored "-Wsign-compare"
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+#endif
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for (struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg); cmsg != nullptr; cmsg = CMSG_NXTHDR(&msg, cmsg))
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+#ifndef __GLIBC__
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+ #pragma clang diagnostic pop
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+#endif
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{
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if (cmsg->cmsg_level == IPPROTO_IPV6)
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{
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@ -0,0 +1,59 @@
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# SPDX-FileCopyrightText: Huawei Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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SUMMARY = "OpenThread Border Router"
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SECTION = "net"
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LICENSE = "BSD-3-Clause & MIT"
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LIC_FILES_CHKSUM = "file://LICENSE;md5=87109e44b2fda96a8991f27684a7349c \
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file://third_party/Simple-web-server/repo/LICENSE;md5=852b3f7f320b19f6431487b8b2fb1d74 \
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file://third_party/cJSON/repo/LICENSE;md5=218947f77e8cb8e2fa02918dc41c50d0 \
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file://third_party/http-parser/repo/LICENSE-MIT;md5=9bfa835d048c194ab30487af8d7b3778 \
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file://third_party/openthread/repo/LICENSE;md5=543b6fe90ec5901a683320a36390c65f \
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"
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DEPENDS = "autoconf-archive dbus readline avahi jsoncpp boost libnetfilter-queue"
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SRCREV = "ad6822257ffddbac295db97186e4ab449a2ed32a"
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PV = "0.3.0+git${SRCPV}"
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SRC_URI = "gitsm://github.com/openthread/ot-br-posix.git;protocol=https;branch=main \
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file://0001-otbr-agent.service.in-remove-pre-exec-hook-for-mdns-.patch \
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file://Turn-off-sign-compare-for-musl-libc.patch \
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"
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S = "${WORKDIR}/git"
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SYSTEMD_SERVICE:${PN} = "otbr-agent.service"
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inherit pkgconfig cmake systemd
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EXTRA_OECMAKE = "-DBUILD_TESTING=OFF \
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-DOTBR_DBUS=ON \
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-DOTBR_REST=ON \
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-DOTBR_WEB=OFF \
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-DCMAKE_LIBRARY_PATH=${libdir} \
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-DOTBR_MDNS=avahi \
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-DOTBR_BACKBONE_ROUTER=ON \
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-DOTBR_BORDER_ROUTING=ON \
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-DOTBR_SRP_ADVERTISING_PROXY=ON \
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-DOTBR_BORDER_AGENT=ON \
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-DOT_SPINEL_RESET_CONNECTION=ON \
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-DOT_TREL=ON \
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-DOT_MLR=ON \
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-DOT_SRP_SERVER=ON \
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-DOT_ECDSA=ON \
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-DOT_SERVICE=ON \
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-DOTBR_DUA_ROUTING=ON \
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-DOT_DUA=ON \
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-DOT_BORDER_ROUTING_NAT64=ON \
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-DOTBR_DNSSD_DISCOVERY_PROXY=ON \
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-DOTBR_INFRA_IF_NAME=eth0 \
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-DOTBR_NO_AUTO_ATTACH=1 \
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-DOT_REFERENCE_DEVICE=ON \
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-DOT_DHCP6_CLIENT=ON \
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-DOT_DHCP6_SERVER=ON \
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"
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RDEPENDS:${PN} = "iproute2 avahi-daemon"
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RCONFLICTS:${PN} = "ot-daemon"
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FILES:${PN} += "${systemd_unitdir}/*"
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FILES:${PN} += "${datadir}/*"
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