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openWRT的ipk编译方法
发表于 2015-3-25 14:16:51
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编译时要配置内核,make menuconfig
配置Build the OpenWrt SDK ,前提条件是openwrt编译成功
1.在编译好的文件中会有/bin/ramips/OpenWrt-SDK-ramips-for-linux-x86_64-gcc-4.6-linaro_uClibc-0.9.33.2.tar.bz2文件
2.然后解压这个文件
tar xvf OpenWrt-SDK-ramips-for-linux-x86_64-gcc-4.6-linaro_uClibc-0.9.33.2.tar.bz2
进入这个sdk,会看见一个package,在下新建mkdir -p helloworld/src 两个目录
在目录src下新建helloworld.c
- #include<stdio.h>
- #include <unistd.h>
- int main(void)
- {
- printf("Hell! O' world, why won't my code compile?\n\n");
- return 0;
- }
复制代码 然后在此目录下创建Makefile(注意Makefile的语法要用tab)
- # build helloworld executable when user executes "make"
- helloworld: helloworld.o
- $(CC) $(LDFLAGS) helloworld.o -o helloworld
- helloworld.o: helloworld.c
- $(CC) $(CFLAGS) -c helloworld.c
- # remove object files and executable when user executes "make clean"
- clean:
- rm *.o helloworld
复制代码 然后返回上层目录,即helloworld目录,在此目录下创建一个Makefile
- ##############################################
- # OpenWrt Makefile for helloworld program
- #
- #
- # Most of the variables used here are defined in
- # the include directives below. We just need to
- # specify a basic description of the package,
- # where to build our program, where to find
- # the source files, and where to install the
- # compiled program on the router.
- #
- # Be very careful of spacing in this file.
- # Indents should be tabs, not spaces, and
- # there should be no trailing whitespace in
- # lines that are not commented.
- #
- ##############################################
- include $(TOPDIR)/rules.mk
- # Name and release number of this package
- PKG_NAME:=helloworld
- PKG_RELEASE:=1
-
-
- # This specifies the directory where we're going to build the program.
- # The root build directory, $(BUILD_DIR), is by default the build_mipsel
- # directory in your OpenWrt SDK directory
- PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
-
-
- include $(INCLUDE_DIR)/package.mk
-
- # Specify package information for this program.
- # The variables defined here should be self explanatory.
- # If you are running Kamikaze, delete the DESCRIPTION
- # variable below and uncomment the Kamikaze define
- # directive for the description below
- define Package/helloworld
- SECTION:=utils
- CATEGORY:=Utilities
- TITLE:=Helloworld -- prints a snarky message
- endef
- # Uncomment portion below for Kamikaze and delete DESCRIPTION variable above
- define Package/helloworld/description
- If you can't figure out what this program does, you're probably
- brain-dead and need immediate medical attention.
- endef
- # Specify what needs to be done to prepare for building the package.
- # In our case, we need to copy the source files to the build directory.
- # This is NOT the default. The default uses the PKG_SOURCE_URL and the
- # PKG_SOURCE which is not defined here to download the source from the web.
- # In order to just build a simple program that we have just written, it is
- # much easier to do it this way.
- define Build/Prepare
- mkdir -p $(PKG_BUILD_DIR)
- $(CP) ./src/* $(PKG_BUILD_DIR)/
- endef
- # We do not need to define Build/Configure or Build/Compile directives
- # The defaults are appropriate for compiling a simple program such as this one
- # Specify where and how to install the program. Since we only have one file,
- # the helloworld executable, install it by copying it to the /bin directory on
- # the router. The $(1) variable represents the root directory on the router running
- # OpenWrt. The $(INSTALL_DIR) variable contains a command to prepare the install
- # directory if it does not already exist. Likewise $(INSTALL_BIN) contains the
- # command to copy the binary file from its current location (in our case the build
- # directory) to the install directory.
- define Package/helloworld/install
- $(INSTALL_DIR) $(1)/bin
- $(INSTALL_BIN) $(PKG_BUILD_DIR)/helloworld $(1)/bin/
- endef
- # This line executes the necessary commands to compile our program.
- # The above define directives specify all the information needed, but this
- # line calls BuildPackage which in turn actually uses this information to
- # build a package.
- $(eval $(call BuildPackage,helloworld))
复制代码
这里的Makefile文件要注意tab(如果是复制过去的话)
然后回到OpenWrt-SDK-ramips-for-linux-x86_64-gcc-4.6-linaro_uClibc-0.9.33.2目录执行make
编译过程会在build_dir目录下完成
make[1] world
make[2] package/compile
make[3] -C package/helloworld compile
make[2] package/index
说明编译成功
编译好的文件放置在bin/[yourtarget]/package目录下
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