OPENWRT开发自定义方法
2015-08-27 10:52
441 查看
OpenWRT编译成功完成后,所有的产品都会放在编译根目录下的bin/{TARGET}/,例如:我所编译的产物都放在./bin/ar74xx/下,其中有一个
packages文件夹:
里面包含了我们在配置文件里设定的所有编译好的软件包。默认情况下,会有默认选择的软件包。需要主要的是,编译完成后,一定要将编译好的bin目录进行备份。
在编译根目录下会有一个dl的目录,这个目录其实是“download”的简写,在编译前期,需要从网络下载的数据包都会放在这个目录下,这些软件包的一个特点就是,会自动安装在所编译的固件中,也就是我们make menuconfig的时候,为固件配置的一些软件包。如果我们需要更改这些源码包,只需要将更改好的源码包打包成相同的名字放在这个目录下,然后开始编译即可。编译时,会将软件包解压到build_dir目录下。
当然,你也可以自己在dl里面创建自己的软件包,然后更改相关的配置文件,让openwrt可以识别这个文件包。
新建和编译自己的packages:
对于自己新建的package,而这个package又不需要随固件一起安装,换句话说,就是可以当做一个可选软件包的话。我们可以利用我们的SDK环境来单独编译,编译后会生成一个ipk的文件包。然后利用opkg
install xxx.ipk 来安装这个软件,在package文件夹里面新建Helloworld,建立源码目录:
cd package
mkdir Helloworld ; cd Helloworld
mkdir src
touch src/Makefile /* Helloworld 编译Makefile */
touch ./Makefile /*建立顶层Makefile,这个Makefile文件是OpenWRT读的*/
Helloworld.c程序:
[cpp] view plaincopyprint?
/****************
* Helloworld.c
*****************/
#include <stdio.h>
#include <unistd.h>
int main(void)
{
printf("Hello world\n");
return 0;
}
编辑Helloworld的编译Makefile:
[html] view plaincopyprint?
# 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
编写模块编译Makefile:
[plain] view plaincopyprint?
Makefile文件模板内容如下:
##############################################
# 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))
返回目录最顶层,执行make menuconfig,在utils中选中刚加的模块名(这里是根据sections中定义的),保存.config。
执行make.
如果要单独编译模块:
makepackage/helloworld/compile
make package/helloworld/install
编译结果会放在bin/{TARGET}/package目录下:helloworld*.ipk
利用tftp将ipk文件上传到板子里面,用opkg install 命令加载模块,加载成功后执行helloworld,这时就是执行之前编写的helloworld程序
参考资料:http://wenku.baidu.com/view/31a903befd0a79563c1e7275.html
转自 http://blog.csdn.net/rudyn/article/details/38616783
packages文件夹:
里面包含了我们在配置文件里设定的所有编译好的软件包。默认情况下,会有默认选择的软件包。需要主要的是,编译完成后,一定要将编译好的bin目录进行备份。
在编译根目录下会有一个dl的目录,这个目录其实是“download”的简写,在编译前期,需要从网络下载的数据包都会放在这个目录下,这些软件包的一个特点就是,会自动安装在所编译的固件中,也就是我们make menuconfig的时候,为固件配置的一些软件包。如果我们需要更改这些源码包,只需要将更改好的源码包打包成相同的名字放在这个目录下,然后开始编译即可。编译时,会将软件包解压到build_dir目录下。
当然,你也可以自己在dl里面创建自己的软件包,然后更改相关的配置文件,让openwrt可以识别这个文件包。
新建和编译自己的packages:
对于自己新建的package,而这个package又不需要随固件一起安装,换句话说,就是可以当做一个可选软件包的话。我们可以利用我们的SDK环境来单独编译,编译后会生成一个ipk的文件包。然后利用opkg
install xxx.ipk 来安装这个软件,在package文件夹里面新建Helloworld,建立源码目录:
cd package
mkdir Helloworld ; cd Helloworld
mkdir src
touch src/Makefile /* Helloworld 编译Makefile */
touch ./Makefile /*建立顶层Makefile,这个Makefile文件是OpenWRT读的*/
Helloworld.c程序:
[cpp] view plaincopyprint?
/****************
* Helloworld.c
*****************/
#include <stdio.h>
#include <unistd.h>
int main(void)
{
printf("Hello world\n");
return 0;
}
编辑Helloworld的编译Makefile:
[html] view plaincopyprint?
# 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
编写模块编译Makefile:
[plain] view plaincopyprint?
Makefile文件模板内容如下:
##############################################
# 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))
返回目录最顶层,执行make menuconfig,在utils中选中刚加的模块名(这里是根据sections中定义的),保存.config。
执行make.
如果要单独编译模块:
makepackage/helloworld/compile
make package/helloworld/install
编译结果会放在bin/{TARGET}/package目录下:helloworld*.ipk
利用tftp将ipk文件上传到板子里面,用opkg install 命令加载模块,加载成功后执行helloworld,这时就是执行之前编写的helloworld程序
参考资料:http://wenku.baidu.com/view/31a903befd0a79563c1e7275.html
转自 http://blog.csdn.net/rudyn/article/details/38616783