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| Linia 30: |
Linia 30: |
| cd modbus_server</pre></li> | | cd modbus_server</pre></li> |
| <li>Create the Makfile file to build your custom package. Exmaple Makefile shown below.</li> | | <li>Create the Makfile file to build your custom package. Exmaple Makefile shown below.</li> |
| <pre>include $(TOPDIR)/rules.mk
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|
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| # Name, version and release number
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| # 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)
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| PKG_NAME:=helloworld
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| PKG_VERSION:=1.0
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| PKG_RELEASE:=1
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|
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| # Source settings (i.e. where to find the source codes)
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| # This is a custom variable, used below
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| SOURCE_DIR:=/home/build/helloworld
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|
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| include $(INCLUDE_DIR)/package.mk
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|
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| # Package definition; instructs on how and where our package will appear in the overall configuration menu ('make menuconfig')
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| define Package/helloworld
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| SECTION:=examples
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| CATEGORY:=Examples
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| TITLE:=Hello, World!
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| endef
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|
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| # Package description; a more verbose description on what our package does
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| define Package/helloworld/description
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| A simple "Hello, world!" -application.
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| endef
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|
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| # Package preparation instructions; create the build directory and copy the source code.
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| # The last command is necessary to ensure our preparation instructions remain compatible with the patching system.
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| define Build/Prepare
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| mkdir -p $(PKG_BUILD_DIR)
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| cp $(SOURCE_DIR)/* $(PKG_BUILD_DIR)
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| $(Build/Patch)
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| endef
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|
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| # Package build instructions; invoke the target-specific compiler to first compile the source file, and then to link the file into the final executable
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| define Build/Compile
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| $(TARGET_CC) $(TARGET_CFLAGS) -o $(PKG_BUILD_DIR)/helloworld.o -c $(PKG_BUILD_DIR)/helloworld.c
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| $(TARGET_CC) $(TARGET_LDFLAGS) -o $(PKG_BUILD_DIR)/$1 $(PKG_BUILD_DIR)/helloworld.o
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| endef
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|
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| # Package install instructions; create a directory inside the package to hold our executable, and then copy the executable we built previously into the folder
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| define Package/helloworld/install
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| $(INSTALL_DIR) $(1)/usr/bin
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| $(INSTALL_BIN) $(PKG_BUILD_DIR)/helloworld $(1)/usr/bin
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| endef
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|
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| # This command is always the last, it uses the definitions and variables we give above in order to get the job done
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| $(eval $(call BuildPackage,helloworld))</pre>
| |
Prerequisites
You will need:
- A PC, laptop or virtual machine running Linux OS (preferably Ubuntu distro)
- An SDK intended for your router, which can be downloaded here: Software Development Kit
Preparation
- Create directory, where the SDK will be extrated e.g RBMTX_SDK.
- Open terminal in created folder and unpack SDK.
tar -xf ~/Downloads/rbmtx3-owrt-sdk-....Linux-x86_64.tar.xz
- Go to the SDK directory.
cd rbmtx3-owrt-sdk-22.10.14-rbmtx3_gcc-8.4.0_musl_eabi.Linux-x86_64/
- Update the feeds.
./scripts/feeds update -a
Compiling a custom package
In this example we are going to show you how to generate OpenWrt package base on the simple Modbus client and server application.
- To create custom package, when you are in the SDK directory go to the package directory.
cd package
- Make new directory where the package Makefile should be placed.
mkdir modbus_server
cd modbus_server
- Create the Makfile file to build your custom package. Exmaple Makefile shown below.