netutils/mqttc: add cmake support

Signed-off-by: meijian <meijian@xiaomi.com>

netutils/mqttc/CMakeLists.txt

@@ -0,0 +1,121 @@
+#
+# Copyright (C) 2024 Xiaomi Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+
+if(CONFIG_NETUTILS_MQTTC)
+
+  # ############################################################################
+  # Config and Fetch MQTTC lib
+  # ############################################################################
+
+  set(MQTTC_DIR ${CMAKE_CURRENT_LIST_DIR}/MQTT-C)
+
+  if(NOT EXISTS ${MQTTC_DIR})
+    set(MQTTC_URL "https://github.com/LiamBindle/MQTT-C/archive")
+    FetchContent_Declare(
+      mqttc_fetch
+      URL ${MQTTC_URL}/${CONFIG_NETUTILS_MQTTC_VERSION}.tar.gz SOURCE_DIR
+          ${MQTTC_DIR} BINARY_DIR ${CMAKE_BINARY_DIR}/apps/netutils/mqttc/MQTT-C
+      DOWNLOAD_NO_PROGRESS true
+      TIMEOUT 30)
+
+    FetchContent_GetProperties(mqttc_fetch)
+
+    if(NOT mqttc_fetch_POPULATED)
+      FetchContent_Populate(mqttc_fetch)
+    endif()
+
+    execute_process(
+      COMMAND
+        sh -c
+        "cat 0001_add_connection_status.patch | patch -s -N -d $(MQTTC_DIR) -p1"
+      WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR})
+  endif()
+
+  set_property(
+    TARGET nuttx
+    APPEND
+    PROPERTY NUTTX_INCLUDE_DIRECTORIES ${MQTTC_DIR}/include)
+  set(CFLAGS -Wno-return-type)
+  if(CONFIG_NETUTILS_MQTTC_WITH_MBEDTLS)
+    list(APPEND CFLAGS -DMQTT_USE_MBEDTLS)
+  endif()
+
+  file(GLOB CSRCS ${MQTTC_DIR}/src/*.c)
+
+  nuttx_add_library(mqttc STATIC)
+  target_sources(mqttc PRIVATE ${CSRCS})
+  target_compile_options(mqttc PRIVATE ${CFLAGS})
+
+  if(CONFIG_NETUTILS_MQTTC_EXAMPLE)
+    if(CONFIG_NETUTILS_MQTTC_WITH_MBEDTLS)
+      nuttx_add_application(
+        NAME
+        mqttc_mbedtls_pub
+        STACKSIZE
+        ${CONFIG_NETUTILS_MQTTC_EXAMPLE_STACKSIZE}
+        PRIORITY
+        ${SCHED_PRIORITY_DEFAULT}
+        SRCS
+        ${MQTTC_DIR}/examples/mbedtls_publisher.c
+        COMPILE_FLAGS
+        ${CFLAGS}
+        DEPENDS
+        mqttc)
+    else()
+      set(MQTT_PUB_CFLAGS
+          ${CFLAGS}
+          -Dopen_nb_socket=pub_open_nb_socket
+          -Dexit_example=pub_exit_example
+          -Dpublish_callback=pub_publish_callback
+          -Dclient_refresher=pub_client_refresher)
+
+      set(MQTT_SUB_CFLAGS
+          ${CFLAGS}
+          -Dopen_nb_socket=sub_open_nb_socket
+          -Dexit_example=sub_exit_example
+          -Dpublish_callback=sub_publish_callback
+          -Dclient_refresher=sub_client_refresher)
+
+      nuttx_add_application(
+        NAME
+        mqttc_posix_pub
+        STACKSIZE
+        ${CONFIG_NETUTILS_MQTTC_EXAMPLE_STACKSIZE}
+        PRIORITY
+        ${SCHED_PRIORITY_DEFAULT}
+        SRCS
+        ${MQTTC_DIR}/examples/simple_publisher.c
+        COMPILE_FLAGS
+        ${MQTT_PUB_CFLAGS}
+        DEPENDS
+        mqttc)
+
+      nuttx_add_application(
+        NAME
+        mqttc_posix_sub
+        STACKSIZE
+        ${CONFIG_NETUTILS_MQTTC_EXAMPLE_STACKSIZE}
+        PRIORITY
+        ${SCHED_PRIORITY_DEFAULT}
+        SRCS
+        ${MQTTC_DIR}/examples/simple_subscriber.c
+        COMPILE_FLAGS
+        ${MQTT_SUB_CFLAGS}
+        DEPENDS
+        mqttc)
+    endif()
+  endif()
+endif()