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CMakeLists.txt
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CMakeLists.txt
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cmake_minimum_required(VERSION 3.5)
project(MQTT-C VERSION 1.1.2 LANGUAGES C)
# MQTT-C build options
option(MQTT_C_OpenSSL_SUPPORT "Build MQTT-C with OpenSSL support?" OFF)
option(MQTT_C_MbedTLS_SUPPORT "Build MQTT-C with mbed TLS support?" OFF)
option(MQTT_C_EXAMPLES "Build MQTT-C examples?" ON)
option(MQTT_C_TESTS "Build MQTT-C tests?" OFF)
list (APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
# MQTT-C library
add_library(mqttc STATIC
src/mqtt_pal.c
src/mqtt.c
)
target_include_directories(mqttc PUBLIC include)
target_link_libraries(mqttc PUBLIC
$<$<C_COMPILER_ID:MSVS>:ws2_32>
)
# Configure with OpenSSL support
if(MQTT_C_OpenSSL_SUPPORT)
find_package(OpenSSL REQUIRED)
target_link_libraries(mqttc INTERFACE OpenSSL::SSL)
target_compile_definitions(mqttc PUBLIC MQTT_USE_BIO)
endif()
# Configure with mbed TLS support
if(MQTT_C_MbedTLS_SUPPORT)
find_package(MbedTLS REQUIRED)
target_include_directories(mqttc PUBLIC ${MBEDTLS_INCLUDE_DIRS})
target_link_libraries(mqttc INTERFACE ${MBEDTLS_LIBRARY})
target_compile_definitions(mqttc PUBLIC MQTT_USE_MBEDTLS)
endif()
# Build examples
if(MQTT_C_EXAMPLES)
find_package(Threads REQUIRED)
if(MQTT_C_OpenSSL_SUPPORT)
add_executable(bio_publisher examples/bio_publisher.c)
target_link_libraries(bio_publisher Threads::Threads mqttc)
add_executable(openssl_publisher examples/openssl_publisher.c)
target_link_libraries(openssl_publisher Threads::Threads mqttc)
elseif(MQTT_C_MbedTLS_SUPPORT)
add_executable(mbedtls_publisher examples/mbedtls_publisher.c)
target_link_libraries(mbedtls_publisher Threads::Threads mqttc ${MBEDX509_LIBRARY} ${MBEDCRYPTO_LIBRARY})
else()
add_executable(simple_publisher examples/simple_publisher.c)
target_link_libraries(simple_publisher Threads::Threads mqttc)
add_executable(simple_subscriber examples/simple_subscriber.c)
target_link_libraries(simple_subscriber Threads::Threads mqttc)
add_executable(reconnect_subscriber examples/reconnect_subscriber.c)
target_link_libraries(reconnect_subscriber Threads::Threads mqttc)
endif()
endif()
# Build tests
if(MQTT_C_TESTS)
find_path(CMOCKA_INCLUDE_DIR cmocka.h)
find_library(CMOCKA_LIBRARY cmocka)
if((NOT CMOCKA_INCLUDE_DIR) OR (NOT CMOCKA_LIBRARY))
message(FATAL_ERROR "Failed to find cmocka! Add cmocka's install prefix to CMAKE_PREFIX_PATH to resolve this error.")
endif()
add_executable(tests tests.c)
target_link_libraries(tests ${CMOCKA_LIBRARY} mqttc)
target_include_directories(tests PRIVATE ${CMOCKA_INCLUDE_DIR})
endif()
# Install includes and library
install(TARGETS mqttc
DESTINATION lib
)
install(DIRECTORY include/
DESTINATION include)