ubuntu1604下交叉编译open62541

it2025-11-09 13

1 下载源码

git clone https://github.com/open62541/open62541.git

安装依赖的软件包

# enable additional features sudo apt-get install cmake-curses-gui # for the ccmake graphical interface sudo apt-get install libmbedtls-dev # for encryption support sudo apt-get install check libsubunit-dev # for unit tests sudo apt-get install python-sphinx graphviz # for documentation generation sudo apt-get install python-sphinx-rtd-theme # documentation style

2 创建build目录

在源码根目录下新建build目录，并进入build目录

3 设置环境变量

export CC=arm-linux-gnueabihf-gcc

export CXX=arm-linux-gnueabihf-g++

4 编译

cd build

# cmake ..

# cmake .. -DBUILD_SHARED_LIBS=ON # 编译成动态库

cmake .. -DUA_ENABLE_AMALGAMATION=ON

make

这里解释下cmake的命令行中的UA_ENABLE_AMALGAMATION选项，这是open62541的CMakeLists.txt提供的选项，专门用于生成single distribution版本的open62541，即open62541.c 和 open62541.h文件，方便用于集成到其它程序里。在bin目录下生成的是open62541的静态库，可以用于和别的程序进行链接。

引用自：https://blog.csdn.net/qq_33406883/article/details/106421787?utm_medium=distribute.pc_relevant_download.none-task-blog-baidujs-1.nonecase&depth_1-utm_source=distribute.pc_relevant_download.none-task-blog-baidujs-1.nonecase

5 编译成功

[ 86%] Building C object CMakeFiles/open62541-plugins.dir/plugins/crypto/ua_pki_none.c.o [ 88%] Building C object CMakeFiles/open62541-plugins.dir/plugins/crypto/ua_securitypolicy_none.c.o [ 88%] Building C object CMakeFiles/open62541-plugins.dir/plugins/ua_log_syslog.c.o [ 90%] Building C object CMakeFiles/open62541-plugins.dir/arch/posix/ua_clock.c.o [ 92%] Building C object CMakeFiles/open62541-plugins.dir/arch/posix/ua_architecture_functions.c.o [ 94%] Building C object CMakeFiles/open62541-plugins.dir/arch/network_tcp.c.o [ 98%] Built target open62541-plugins Scanning dependencies of target open62541 [100%] Linking C static library bin/libopen62541.a [100%] Built target open62541

编译后的库在build/bin/下面

$ ls bin/ libopen62541.a 并且在build目录下有：open62541.c open62541.h

6 测试

serv.c

// server.c /* This work is licensed under a Creative Commons CCZero 1.0 Universal License. * See http://creativecommons.org/publicdomain/zero/1.0/ for more information. */ #include "open62541.h" #include <signal.h> #include <stdlib.h> UA_Boolean running = true; static void stopHandler(int sign) { UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_SERVER, "received ctrl-c"); running = false; } int main(void) { signal(SIGINT, stopHandler); signal(SIGTERM, stopHandler); UA_Server *server = UA_Server_new(); UA_ServerConfig_setDefault(UA_Server_getConfig(server)); UA_StatusCode retval = UA_Server_run(server, &running); UA_Server_delete(server); return retval == UA_STATUSCODE_GOOD ? EXIT_SUCCESS : EXIT_FAILURE; }

client.c

// client.c，功能主要是从server那里获取时间 #include <stdlib.h> #include "open62541.h" int main(void) { UA_Client *client = UA_Client_new(); UA_ClientConfig_setDefault(UA_Client_getConfig(client)); UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840"); if(retval != UA_STATUSCODE_GOOD) { UA_Client_delete(client); return (int)retval; } /* Read the value attribute of the node. UA_Client_readValueAttribute is a * wrapper for the raw read service available as UA_Client_Service_read. */ UA_Variant value; /* Variants can hold scalar values and arrays of any type */ UA_Variant_init(&value); /* NodeId of the variable holding the current time */ const UA_NodeId nodeId = UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER_SERVERSTATUS_CURRENTTIME); retval = UA_Client_readValueAttribute(client, nodeId, &value); if(retval == UA_STATUSCODE_GOOD && UA_Variant_hasScalarType(&value, &UA_TYPES[UA_TYPES_DATETIME])) { UA_DateTime raw_date = *(UA_DateTime *) value.data; UA_DateTimeStruct dts = UA_DateTime_toStruct(raw_date); UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND, "date is: %u-%u-%u %u:%u:%u.%03u\n", dts.day, dts.month, dts.year, dts.hour, dts.min, dts.sec, dts.milliSec); } /* Clean up */ UA_Variant_clear(&value); UA_Client_delete(client); /* Disconnects the client internally */ return EXIT_SUCCESS; }

把上面编译的open62541.c open62541.h和这两个测试代码放在一个目录下

$ ls client.c open62541.c open62541.h server.c

编译：

$ arm-linux-gnueabihf-gcc -std=c99 open62541.c client.c -o client

$ arm-linux-gnueabihf-gcc -std=c99 open62541.c server.c.c -o server

运行：

把serv和client放到目标机器上：

# ./server [2020-10-22 15:08:54.667 (UTC+0800)] warn/server AccessControl: Unconfigured AccessControl. Users have all permissions. [2020-10-22 15:08:54.668 (UTC+0800)] info/server AccessControl: Anonymous login is enabled [2020-10-22 15:08:54.669 (UTC+0800)] warn/server Username/Password configured, but no encrypting SecurityPolicy. This can leak credentials on the network. [2020-10-22 15:08:54.670 (UTC+0800)] warn/userland AcceptAll Certificate Verification. Any remote certificate will be accepted. [2020-10-22 15:08:54.672 (UTC+0800)] info/network TCP network layer listening on opc.tcp://imx6ull14x14evk:4840/ [2020-10-22 15:09:07.601 (UTC+0800)] info/network Connection 5 | New connection over TCP from ::1 [2020-10-22 15:09:07.603 (UTC+0800)] info/channel Connection 5 | SecureChannel 1 | SecureChannel opened with SecurityPolicy http://opcfoundation.org/UA/SecurityPolicy#None and a revised lifetime of 600.00s [2020-10-22 15:09:07.609 (UTC+0800)] info/channel Connection 5 | SecureChannel 1 | Session 5f208920-4bab-1eeb-c8ec-1e0143c4fc3f created [2020-10-22 15:09:07.618 (UTC+0800)] info/channel Connection 5 | SecureChannel 1 | CloseSecureChannel [2020-10-22 15:09:07.618 (UTC+0800)] info/network Connection 5 | Closed

# ./client [2020-10-22 15:09:07.586 (UTC+0800)] warn/userland AcceptAll Certificate Verification. Any remote certificate will be accepted. [2020-10-22 15:09:07.604 (UTC+0800)] info/channel Connection 3 | SecureChannel 1 | SecureChannel opened with SecurityPolicy http://opcfoundation.org/UA/SecurityPolicy#None and a revised lifetime of 600.00s [2020-10-22 15:09:07.605 (UTC+0800)] info/client Client Status: ChannelState: Open, SessionState: Closed, ConnectStatus: Good [2020-10-22 15:09:07.607 (UTC+0800)] info/client Selected Endpoint opc.tcp://localhost:4840 with SecurityMode None and SecurityPolicy http://opcfoundation.org/UA/SecurityPolicy#None [2020-10-22 15:09:07.608 (UTC+0800)] info/client Selected UserTokenPolicy open62541-anonymous-policy with UserTokenType Anonymous and SecurityPolicy http://opcfoundation.org/UA/SecurityPolicy#None [2020-10-22 15:09:07.610 (UTC+0800)] info/client Client Status: ChannelState: Open, SessionState: Created, ConnectStatus: Good [2020-10-22 15:09:07.612 (UTC+0800)] info/client Client Status: ChannelState: Open, SessionState: Activated, ConnectStatus: Good [2020-10-22 15:09:07.613 (UTC+0800)] info/userland date is: 22-10-2020 7:9:7.613 [2020-10-22 15:09:07.620 (UTC+0800)] info/client Client Status: ChannelState: Closed, SessionState: Closed, ConnectStatus: Good root@imx6ull14x14evk:/data/vpnclient#

可以看到client已经获取到了时间

出现的问题

cmake时报错：

The C compiler "/home/sundh/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux/bin/arm-linux-gnueabihf-gcc" is not able to compile a simple test program. ...略...

arm-linux-gnueabihf-gcc: error: unrecognized command line option ‘-m32’

...略...

解决办法：修改代码根目录下的CMakeLists.txt 把"-m32"部分的代码屏蔽掉

# if(UA_FORCE_32BIT) # string(FIND "${CMAKE_C_FLAGS}" "-m32" m32_already_set) # if(m32_already_set EQUAL -1) # set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32") # endif() # unset(flag_supported CACHE) # endif()

参考说明：

https://github.com/open62541/open62541/blob/master/doc/building.rst

https://blog.csdn.net/qq_33406883/article/details/106421787?utm_medium=distribute.pc_relevant_download.none-task-blog-baidujs-1.nonecase&depth_1-utm_source=distribute.pc_relevant_download.none-task-blog-baidujs-1.nonecase

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