linux 编译mqtt静态库_Windows 编译 MQTT C++

如果遇到报错

ADD_LIBRARY cannot create target "paho-mqtt3c" because another target with   the same name already exists.  The existing target is a shared library   created in source directory

需要更改

..\paho.mqtt.c\src

下的CMakeLists.txt,将-static后缀添加到文件中的静态库名称上,有两个地方需要进行此更改,在该文件中搜索PAHO_BUILD_STATIC:

第94行附近(添加-static到if语句中引用的库名称中):

IF (PAHO_BUILD_STATIC)

ADD_LIBRARY(paho-mqtt3c-static STATIC $ MQTTClient.c)

ADD_LIBRARY(paho-mqtt3a-static STATIC $ MQTTAsync.c)

TARGET_LINK_LIBRARIES(paho-mqtt3c-static ${LIBS_SYSTEM})

TARGET_LINK_LIBRARIES(paho-mqtt3a-static ${LIBS_SYSTEM})

INSTALL(TARGETS paho-mqtt3c-static paho-mqtt3a-static

ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})

ENDIF()

在第164行附近(添加-static到if语句中引用的库名称中):

IF (PAHO_BUILD_STATIC)

ADD_LIBRARY(paho-mqtt3cs-static STATIC $ MQTTClient.c SSLSocket.c)

ADD_LIBRARY(paho-mqtt3as-static STATIC $ MQTTAsync.c SSLSocket.c)

TARGET_LINK_LIBRARIES(paho-mqtt3cs-static ${OPENSSL_LIBRARIES} ${LIBS_SYSTEM})

TARGET_LINK_LIBRARIES(paho-mqtt3as-static ${OPENSSL_LIBRARIES} ${LIBS_SYSTEM})

SET_TARGET_PROPERTIES(

paho-mqtt3cs-static paho-mqtt3as-static PROPERTIES

VERSION ${CLIENT_VERSION}

SOVERSION ${PAHO_VERSION_MAJOR}

COMPILE_DEFINITIONS "OPENSSL=1")

INSTALL(TARGETS paho-mqtt3cs-static paho-mqtt3as-static

ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})

ENDIF()

进行更改后,清除您的CMake缓存(或删除构建文件夹中的CMakeCache.txt文件)并重新运行CMake。


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