add_custom_target( AzureLib ALL DEPENDS ./azure-iot-sdk-c/cmake/iotsdk_linux/iothub_client/libiothub_client.so ) add_custom_command( OUTPUT ./azure-iot-sdk-c/cmake/iotsdk_linux/iothub_client/libiothub_client.so COMMAND ./azure-iot-sdk-c/build_all/linux/build.sh --toolchain-file ./toolchain.cmake )