Openwrt SDK是一个可再定位的，预编译好的OpenWrt工具链，适用于在不从头开始编译整个系统的前提下，针对一个特定平台交叉编译单个用户空间包。
使用SDK的原因：
为了保证二进制和特性兼容性，针对特定的发行版编译自定义软件
编译更新版本的指定包文件
使用自定义的补丁或者不同特性来重新编译已经存在的包
#-----官方文档如下
This is the OpenWrt SDK. It contains a stripped-down version of the buildroot. You can use it to test/develop packages without having to compile your own toolchain or any of the libraries included with OpenWrt.
To use it, just put your buildroot-compatible package directory in the subdir 'package/' and run 'make' from this directory.
#------ OPENWRT集成非官方包之Makefile规则
include $(TOPDIR)/rules.mk
PKG_NAME:=[软件包名字 和文件夹名称一样]
PKG_VERSION:=[软件包版本 自己写个]
PKG_RELEASE:=1
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
include $(INCLUDE_DIR)/package.mk
define Package/$(PKG_NAME)
SECTION:=utils
CATEGORY:=[软件包在menuconfig里的位置 比如Base system]
DEPENDS:=[依赖包 两个之间通过空格分隔 前面加+为默认显示 选中该软件包自动选中依赖包 不加+为默认不显示 选中依赖包才显示]
TITLE:=[标题]
PKGARCH:=[平台 比如ar71xx 全部写all]
MAINTAINER:=[作者]
endef
define Package/$(PKG_NAME)/description
[软件包简介]
endef
#非本目录下的源码文件, 拷贝到此相应目录下.
# 如../../xucommon/xucommon.c, 则将 xucommon.c 拷贝到此目录下的源码的 ../../
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
define Build/Configure
endef
define Build/Compile
endef
define Package/$(PKG_NAME)/conffiles
[升级时保留文件/备份时备份文件 一个文件一行]
endef
define Package/$(PKG_NAME)/install
$(CP) ./files/* $(1)/
endef
define Package/$(PKG_NAME)/preinst
[安装前执行的脚本 记得加上#!/bin/sh 没有就空着]
#!/bin/sh
uci -q batch <<-EOF >/dev/null
delete ucitrack.@aria2[-1]
add ucitrack aria2
set ucitrack.@aria2[-1].init=aria2
commit ucitrack
EOF
exit 0
endef
define Package/$(PKG_NAME)/postinst
[安装后执行的脚本 记得加上#!/bin/sh 没有就空着]
#!/bin/sh
rm -f /tmp/luci-indexcache
exit 0
endef
Package/$(PKG_NAME)/prerm
[删除前执行的脚本 记得加上#!/bin/sh 没有就空着]
endef
Package/$(PKG_NAME)/postrm
[删除后执行的脚本 记得加上#!/bin/sh 没有就空着]
endef
$(eval $(call BuildPackage,$(PKG_NAME)))
---------------------------------------------------------------------
# --- 自己的例程: httpclient 目录下的 Makefile
include $(TOPDIR)/rules.mk
PKG_NAME:=httpclient
PKG_RELEASE:=1
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
include $(INCLUDE_DIR)/package.mk
define Package/httpclient
SECTION:=utils
CATEGORY:=Utilities
TITLE:=HTTP Client Demo
endef
define Package/httpclient/description
HTTP Client Demo
endef
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
define Package/httpclient/install
$(INSTALL_DIR) $(1)/usr/sbin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/httptest $(1)/usr/sbin/
$(INSTALL_DIR) $(1)/etc/config
$(INSTALL_CONF) ./files/test.lua $(1)/etc/config/test.lua
endef
$(eval $(call BuildPackage,$(PKG_NAME)))
#--- ser2net 之Makefile
include $(TOPDIR)/rules.mk
PKG_NAME:=ser2net
PKG_VERSION:=2.7
PKG_RELEASE:=2
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=@SF/ser2net
PKG_MD5SUM:=22977477789868923a5de09a85e847dd
PKG_FIXUP:=libtool
PKG_INSTALL:=1
include $(INCLUDE_DIR)/package.mk
define Package/ser2net
SECTION:=net
CATEGORY:=Network
TITLE:=Serial port TCP/IP redirector
URL:=
endef
define Package/ser2net/description
This is ser2net, a program for allowing network connections to serial ports.
See the man page for information about using the program. Note that ser2net
supports RFC 2217 (remote control of serial port parameters), but you must
have a complient client.
endef
define Package/ser2net/conffiles
/etc/ser2net.conf
endef
# uses GNU configure
define Package/ser2net/install
$(INSTALL_DIR) $(1)/usr/sbin
$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/ser2net $(1)/usr/sbin/
$(INSTALL_DIR) $(1)/etc
$(INSTALL_CONF) $(PKG_BUILD_DIR)/ser2net.conf $(1)/etc/
endef
$(eval $(call BuildPackage,ser2net))
#--- uhttpd 之 Makefile
include $(TOPDIR)/rules.mk
PKG_NAME:=uhttpd
PKG_RELEASE:=31
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
PKG_CONFIG_DEPENDS := \
CONFIG_PACKAGE_uhttpd-mod-lua \
CONFIG_PACKAGE_uhttpd-mod-tls \
CONFIG_PACKAGE_uhttpd-mod-tls_cyassl \
CONFIG_PACKAGE_uhttpd-mod-tls_openssl
include $(INCLUDE_DIR)/package.mk
define Package/uhttpd/default
SECTION:=net
CATEGORY:=Network
SUBMENU:=Web Servers/Proxies
TITLE:=uHTTPd - tiny, single threaded HTTP server
MAINTAINER:=Jo-Philipp Wich
endef
define Package/uhttpd
$(Package/uhttpd/default)
MENU:=1
endef
define Package/uhttpd/description
uHTTPd is a tiny single threaded HTTP server with TLS, CGI and Lua
support. It is intended as a drop-in replacement for the Busybox
HTTP daemon.
endef
define Package/uhttpd-mod-tls
$(Package/uhttpd/default)
TITLE+= (TLS plugin)
DEPENDS:=uhttpd +PACKAGE_uhttpd-mod-tls_cyassl:libcyassl +PACKAGE_uhttpd-mod-tls_openssl:libopenssl
endef
define Package/uhttpd-mod-tls/description
The TLS plugin adds HTTPS support to uHTTPd.
endef
define Package/uhttpd-mod-tls/config
choice
depends on PACKAGE_uhttpd-mod-tls
prompt "TLS Provider"
default PACKAGE_uhttpd-mod-tls_cyassl
config PACKAGE_uhttpd-mod-tls_cyassl
bool "CyaSSL"
config PACKAGE_uhttpd-mod-tls_openssl
bool "OpenSSL"
endchoice
endef
UHTTPD_TLS:=
TLS_CFLAGS:=
TLS_LDFLAGS:=
ifneq ($(CONFIG_PACKAGE_uhttpd-mod-tls_cyassl),)
UHTTPD_TLS:=cyassl
TLS_CFLAGS:=-I$(STAGING_DIR)/usr/include/cyassl -DTLS_IS_CYASSL
TLS_LDFLAGS:=-lcyassl -lm
endif
ifneq ($(CONFIG_PACKAGE_uhttpd-mod-tls_openssl),)
UHTTPD_TLS:=openssl
TLS_CFLAGS:=-DTLS_IS_OPENSSL
TLS_LDFLAGS:=-lssl
endif
define Package/uhttpd-mod-lua
$(Package/uhttpd/default)
TITLE+= (Lua plugin)
DEPENDS:=uhttpd +liblua
endef
define Package/uhttpd-mod-lua/description
The Lua plugin adds a CGI-like Lua runtime interface to uHTTPd.
endef
TARGET_CFLAGS += $(TLS_CFLAGS)
TARGET_LDFLAGS += -Wl,-rpath-link=$(STAGING_DIR)/usr/lib
MAKE_VARS += \
FPIC="$(FPIC)" \
LUA_SUPPORT="$(if $(CONFIG_PACKAGE_uhttpd-mod-lua),1)" \
TLS_SUPPORT="$(if $(CONFIG_PACKAGE_uhttpd-mod-tls),1)" \
UHTTPD_TLS="$(UHTTPD_TLS)" \
TLS_CFLAGS="$(TLS_CFLAGS)" \
TLS_LDFLAGS="$(TLS_LDFLAGS)"
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
define Package/uhttpd/conffiles
/etc/config/uhttpd
/etc/uhttpd.crt
/etc/uhttpd.key
endef
define Package/uhttpd/install
$(INSTALL_DIR) $(1)/etc/init.d
$(INSTALL_BIN) ./files/uhttpd.init $(1)/etc/init.d/uhttpd
$(INSTALL_DIR) $(1)/etc/config
$(INSTALL_CONF) ./files/uhttpd.config $(1)/etc/config/uhttpd
$(INSTALL_DIR) $(1)/usr/sbin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/uhttpd $(1)/usr/sbin/uhttpd
endef
define Package/uhttpd-mod-tls/install
$(INSTALL_DIR) $(1)/usr/lib
$(INSTALL_BIN) $(PKG_BUILD_DIR)/uhttpd_tls.so $(1)/usr/lib/
endef
define Package/uhttpd-mod-lua/install
$(INSTALL_DIR) $(1)/usr/lib
$(INSTALL_BIN) $(PKG_BUILD_DIR)/uhttpd_lua.so $(1)/usr/lib/
endef
$(eval $(call BuildPackage,uhttpd))
$(eval $(call BuildPackage,uhttpd-mod-tls))
$(eval $(call BuildPackage,uhttpd-mod-lua))
具体操作如下:
利用 SDK 生成自己的ipk安装包,
下载
1. 解压
tar jxvf OpenWrt-SDK-ar71xx-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2.tar.bz2
2. 进入目录
cd OpenWrt-SDK-ar71xx-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2
3. 将自己的代码目录拷贝到本目录的 package目录下
注意 Makefile 必须遵守openwrt的规则, 可参考
http://blog.chinaunix.net/uid-27194309-id-3432651.html
4. 编译, 成功后在bin/ar71xx/packages目录下可以看到相关的ipk文件, 可用winscp 拷贝出来
#编译所有组件
make V=99
#单独编译某个组件
make package/hid/compile
5. 安装到路由器上实验, 这个你们都懂的
#注: SDK的目录不要改动, 否则出现如下错误
xxg@xxg-desktop:~/SDK-ar71xx-gcc-4.6-linaro_uClibc-0.9.33.2$ make
/bin/sh: /home/xxg/OpenWrt-SDK-ar71xx-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2/staging_dir/host/bin/find: not found
/bin/sh: /home/xxg/OpenWrt-SDK-ar71xx-for-linux-i486-gcc-4.6-linaro_uClibc-0.9.33.2/staging_dir/host/bin/find: not found