在 openwrt 上编译自定义包，包括 lib libpaho-mqtt3c

编程问答 2022-06-02

问题描述

我正在尝试使用 OpenWRT SDK 编译自定义包。 当我编译代码时，我收到此消息

致命错误：MQTTClient.h：没有这样的文件或目录#include "MQTTClient.h"

我确定错误出在 makefile 和未包含的库中

include $(TOPDIR)/rules.mk

# Name,version and release number
# The name and version of your package are used to define the variable to point to the build directory of your package: $(PKG_BUILD_DIR)
PKG_NAME:=test_app
PKG_VERSION:=1.0
PKG_RELEASE:=1


# Source settings (i.e. where to find the source codes)
# This is a custom variable,used below
SOURCE_DIR:=/home/biagioscarciello/Scrivania/RUT9XX_R_GPL_00.06.07.3/test_app

include $(INCLUDE_DIR)/package.mk



# Package deFinition; instructs on how and where our package will appear in the overall configuration menu ('make menuconfig')
define Package/test_app
    SECTION:=custom
    CATEGORY:=Custom Applications
    DEPENDS:=+libpaho-mqtt3c
    TITLE:=test_app Application
endef

# Package description; a more verbose description on what our package does
define Package/test_app/description
    test_app device -application.
endef

define Build/Configure
  $(call Build/Configure/Default,--with-linux-headers=$(LINUX_DIR))
endef
 

# Package preparation instructions; create the build directory and copy the source code. 
# The last command is necessary to ensure our preparation instructions remain compatible with the patching system.
define Build/Prepare
    mkdir -p $(PKG_BUILD_DIR)
    cp $(SOURCE_DIR)/* $(PKG_BUILD_DIR)
    $(Build/Patch)
endef




# Package build instructions; invoke the target-specific compiler to first compile the source file,and then to link the file into the final executable
define Build/Compile
    $(TARGET_CC) $(TARGET_CFLAGS)  -o $(PKG_BUILD_DIR)/device_mqtt.o -c $(PKG_BUILD_DIR)/device_mqtt.c -libpaho-mqtt3c
    $(TARGET_CC) $(TARGET_CFLAGS)  -o $(PKG_BUILD_DIR)/test_app.o -c $(PKG_BUILD_DIR)/test_app.c 
    $(TARGET_CC) $(TARGET_LDFLAGS) -o $(PKG_BUILD_DIR) $(PKG_BUILD_DIR)/device_mqtt.o 
    $(TARGET_CC) $(TARGET_LDFLAGS) -o $(PKG_BUILD_DIR)/$1 
    $(PKG_BUILD_DIR)/test_app.o 
    $(PKG_BUILD_DIR)/device_mqtt.o

结束

define Package/librdkafka/prepare
    mkdir -p $(PKG_BUILD_DIR)
    $(INSTALL_DIR) $(PKG_BUILD_DIR)/usr/include
    $(INSTALL_DIR) $(PKG_BUILD_DIR)/usr/lib
endef

define Package/librdkafka/install
    $(INSTALL_DIR) $(1)/usr/lib
    $(CP) $(PKG_INSTALL_DIR)/usr/lib/*.so* $(1)/usr/lib/
endef


# Package install instructions; create a directory inside the package to hold our executable,and then copy the executable we built prevIoUsly into the folder
define Package/test_app/install
        $(INSTALL_DIR) $(1)/usr/bin
        $(INSTALL_BIN) $(PKG_BUILD_DIR)/test_app $(1)/usr/bin
endef

# This command is always the last,it uses the deFinitions and variables we give above in order to get the job done
$(eval $(call BuildPackage,test_app))

我也在 Feed.conf 中添加并激活了这个

src-git 自定义 https://github.com/ngohaibac/openwrt-extra-packages

这是 paho 的预编译版本。

我不是在练习 Makefile 和 SDK 世界。

非常感谢您的帮助

解决方法

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makefilemakefilemqttmqttopenwrtopenwrtpahosdksdk