54 lines
1.7 KiB
CMake
54 lines
1.7 KiB
CMake
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# find the Paho MQTT C library
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if(PAHO_WITH_SSL)
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set(_PAHO_MQTT_C_LIB_NAME paho-mqtt3as)
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find_package(OpenSSL REQUIRED)
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else()
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set(_PAHO_MQTT_C_LIB_NAME paho-mqtt3a)
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endif()
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# add suffix when using static Paho MQTT C library variant on Windows
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if(WIN32)
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if(PAHO_BUILD_STATIC)
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set(_PAHO_MQTT_C_LIB_NAME ${_PAHO_MQTT_C_LIB_NAME}-static)
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endif()
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endif()
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if(PAHO_WITH_MQTT_C)
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# Build the paho.mqtt.c library from the submodule
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add_subdirectory(externals/paho-mqtt-c)
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add_library(PahoMqttC::PahoMqttC ALIAS ${_PAHO_MQTT_C_LIB_NAME})
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## install paho.mqtt.c library (appending to PahoMqttCpp export)
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install(TARGETS ${_PAHO_MQTT_C_LIB_NAME}
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EXPORT PahoMqttCpp
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ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
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LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
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)
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find_path(PAHO_MQTT_C_INCLUDE_DIRS
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NAMES MQTTAsync.h
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HINTS ${CMAKE_CURRENT_SOURCE_DIR}/externals/paho-mqtt-c/src
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)
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else()
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find_library(PAHO_MQTT_C_LIBRARIES NAMES ${_PAHO_MQTT_C_LIB_NAME})
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unset(_PAHO_MQTT_C_LIB_NAME)
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find_path(PAHO_MQTT_C_INCLUDE_DIRS NAMES MQTTAsync.h)
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add_library(PahoMqttC::PahoMqttC UNKNOWN IMPORTED)
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set_target_properties(PahoMqttC::PahoMqttC PROPERTIES
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IMPORTED_LOCATION "${PAHO_MQTT_C_LIBRARIES}"
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INTERFACE_INCLUDE_DIRECTORIES "${PAHO_MQTT_C_INCLUDE_DIRS}"
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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)
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if(PAHO_WITH_SSL)
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set_target_properties(PahoMqttC::PahoMqttC PROPERTIES
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INTERFACE_COMPILE_DEFINITIONS "OPENSSL=1"
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INTERFACE_LINK_LIBRARIES "OpenSSL::SSL;OpenSSL::Crypto")
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endif()
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(PahoMqttC REQUIRED_VARS PAHO_MQTT_C_INCLUDE_DIRS)
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