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openWRT编译初体验： sudo apt-get update sudo apt-get install gcc g++ binutils patch bzip2 flex bison make autoconf gettext texinfo unzip sharutils subversion libncurses5-dev ncurses-term zlib1g-dev svn co svn://svn.openwrt.org/openwrt/branches/backfire ./scripts/feeds update -a ./scripts/feeds install -a make menuconfig make V=s(若想清除重新编译则make distclean) openWRT添加最小驱动模块、最小应用模块： 1.添加内核模块 进入openWRT/package目录下，新建模块目录mkdir example-----> cd example; touch Makefile;touch config.in ;mkdir src(makefile中PKG_NAME:=example；define KernelPackage/example； $(eval $(call KernelPackage,example))语句是将该内核模块编译进系统的，必加)-----> cd src; touch makefile-----> 在openWRT/tmp/.config-package.in中添加一个一级菜单并在菜单中包source "package/example/config.in" make package/example/compile编译该模块即可。 如： menu "Ralink Properties" menu "Applications" config PACKAGE_ated tristate "ated.......................................................... ATE Daemon" default y if DEFAULT_ated default m if ALL select PACKAGE_libc select PACKAGE_librt if USE_EGLIBC select PACKAGE_libpthread if USE_EGLIBC help ATE Daemon endmenu menu "Drivers" menuconfig PACKAGE_kmod-rt2860v2 tristate "kmod-rt2860v2............................... Ralink MT7620 wifi AP driver" default y if DEFAULT_kmod-rt2860v2 default y if (CONFIG_TARGET_ramips_mt7620n || CONFIG_TARGET_ramips_mt7620a) select PACKAGE_maccalc select PACKAGE_wireless-tools depends on TARGET_ramips_mt7620a help This package contains a driver for MT7620 source "package/ralink/drivers/mt7620/config.in" endmenu endmenu 2.添加用户态工具或最小应用模块 进入openWRT/package目录下，新建模块目录mkdir example2-----> cd example2; touch Makefile;touch config.in ;mkdir src(makefile中PKG_NAME:=example2；define Package/example2； $(eval $(call Package,example2))语句是将该内核模块编译进系统的，必加)-----> cd src; touch makefile-----> 在openWRT/tmp/.config-package.in中添加一个一级菜单并在菜单中包source "package/example/config.in" make package/example/compile编译该模块即可。 注：应用模块的新加菜单一般放在一级菜单Base system下，应用菜单作为二级或三级菜单。 openWRT各Kconfig或config.in的调用顺序： 顶层config.in：mainmenu "OpenWrt Configuration" source "target/Config.in" source "config/Config-images.in" source "config/Config-build.in" source "config/Config-devel.in" source "toolchain/Config.in" source "target/imagebuilder/Config.in" source "target/sdk/Config.in" source "target/toolchain/Config.in" source "tmp/.config-package.in" 1.1source "target/Config.in"：实现了类似内核中ARCH=arm及make SMDKxxx_defconfig的功能。 source "tmp/.config-target.in" # Kernel/Hardware features config GPIO_SUPPORT config PCI_SUPPORT config USB_SUPPORT。。。----既无menu又无choice故非配置菜单。 # Architecture selection config arm_v7 config mips。。。 1.2source "tmp/.config-target.in" choice----------------------一级菜单 prompt "Target System" default TARGET_ar71xx config TARGET_ppc44x config TARGET_bcm53xx config TARGET_octeon config TARGET_ramips bool "Ralink RT288x/RT3xxx" end choice--------------------一级菜单结束 choice prompt "Subtarget" if HAS_SUBTARGETS------一级菜单 config TARGET_ramips_mt7620a bool "MT7620a based boards" select LINUX_3_10 depends on TARGET_ramips select USES_DEVICETREE select GPIO_SUPPORT----选中TARGET_ramips_mt7620a后会连带选中以下select各项 select PCI_SUPPORT select USES_SQUASHFS select USB_SUPPORT select mipsel 。。。。。。 end choice-----------------------一级菜单结束 choice prompt "Target Profile"--------------------一级菜单，配置菜单中只有一个选项但选中后会连带选中如下一系列select项。 config TARGET_ramips_mt7620a_Default bool "Default Profile" depends on TARGET_ramips_mt7620a select DEFAULT_base-files select DEFAULT_busybox select DEFAULT_dnsmasq select DEFAULT_dropbear select DEFAULT_firewall select DEFAULT_fstools select DEFAULT_ip6tables select DEFAULT_iptables-----------Default package set compatible with most boards. select DEFAULT_iwinfo select DEFAULT_kmod-gpio-button-hotplug select DEFAULT_kmod-ipt-nathelper select DEFAULT_kmod-leds-gpio select DEFAULT_kmod-ledtrig-usbdev select DEFAULT_kmod-rt2800-pci select DEFAULT_kmod-rt2800-soc select DEFAULT_kmod-usb-core select DEFAULT_kmod-usb-dwc2 select DEFAULT_libc select DEFAULT_libgcc select DEFAULT_mtd select DEFAULT_netifd select DEFAULT_odhcp6c select DEFAULT_odhcpd select DEFAULT_opkg select DEFAULT_ppp select DEFAULT_ppp-mod-pppoe select DEFAULT_swconfig select DEFAULT_uci select DEFAULT_wpad-mini end choice---------------------------一级菜单结束 ================================================================================================================================================ squashfs-lzma：制作squashfs文件系统，并用lzma压缩算法压缩（若硬件平台选Ralink则root filesystem默认用squashfs-lzma压缩， 最终用脚本将uImage和压缩的root filesystem压成一个固件包）。 --------------->固件就是内核+根文件系统放在一个分区，类似硬盘的分区系统可按需读取该分区上的任一个文件。 2.1 source "config/Config-images.in" menu "Target Images"----------------一级菜单 choice-----------------------------二级菜单 config TARGET_INITRAMFS_COMPRESSION_LZMA-------若使用内核的Initramfs则需选择Initramfs的压缩方式。 config TARGET_ROOTFS_TARGZ---------------------若root filesystem直接打包，则需选择打包所用压缩格式(tar.gz或cpio.gz)。 config TARGET_ROOTFS_JFFS2--------------------文件系统的映像(images)类型，一般为squashfs或yaffs2。 endchoice------------------------二级菜单结束 source "target/linux/*/image/Config.in"-----二级菜单，不过该菜单只有X86\at91\avr32及博通等几个硬件平台有，其他平台不需要。 endmenu-------------------一级菜单结束 ================================================================================================================================================= 3.1 source "config/Config-build.in" menu "Global build settings"-----------------一级菜单 config COLLECT_KERNEL_DEBUG---收集内核编译符号表及其他模块的编译符号表，调试用。 comment "Kernel build options" source "config/Config-kernel.in" comment "Package build options" config DEBUG-------将package的符号表等信息编到package中 3.2 comment "Kernel build options" config KERNEL_EARLY_PRINTK config KERNEL_PRINTK_TIME----选中后内核Printk会打印时间信息(内核本身的编译选项)。 config KERNEL_NAMESPACES config KERNEL_KALLSYMS------使能内核编译符号表编译到内核（内核本身的编译选项）。 ================================================================================================================================================== 4.1 source "config/Config-devel.in"和source "toolchain/Config.in" menuconfig DEVEL------------------一级菜单 bool "Advanced configuration options (for developers)" config DOWNLOAD_FOLDER---------可设置make时下载文件的存放目录 config TARGET_ROOTFS_DIR--------修改根文件系统所在的目录 config KERNEL_GIT_CLONE_URI-----配置所需内核版本的git下载链接 config KERNEL_GIT_LOCAL_REPOSITORY config BUILD_LOG--------------配置编译时是否记录错误日志 config SRC_TREE_OVERRIDE----自定义package目录源码的位置 config EXTERNAL_KERNEL_TREE----自定义内核源码目录(使用自己的内核源码) menuconfig TARGET_OPTIONS---------二级菜单 bool "Target Options" if DEVEL config TARGET_OPTIMIZATION----开启编译器优化 endmenu menuconfig EXTERNAL_TOOLCHAIN-----二级菜单 config NATIVE_TOOLCHAIN---配置使用host及toolchain目录中编译出来的工具及编译器，否则需要自定义工具的名称、安装路径、及工具链头文件和依赖库路径。 source "toolchain/eglibc/Config.in" source "toolchain/uClibc/Config.in" source "toolchain/musl/Config.in" source "toolchain/gcc/Config.version" source "toolchain/eglibc/Config.version" source "toolchain/uClibc/Config.version" source "toolchain/musl/Config.version" ======================================================================================================================== 5 下面这三项包含的内容极少： source "target/imagebuilder/Config.in" source "target/sdk/Config.in" source "target/toolchain/Config.in" bool "Build the OpenWrt Image Builder"---若不用外部工具链且不用Initramfs，openWRT就编译生成Image构建工具。 depends on !TARGET_ROOTFS_INITRAMFS depends on !PROFILE_KCONFIG depends on !EXTERNAL_TOOLCHAIN config SDK bool "Build the OpenWrt SDK"---------只要不用外部工具链，openWRT就编译SDK。 depends on !EXTERNAL_TOOLCHAIN config MAKE_TOOLCHAIN bool "Build the OpenWrt based Toolchain" depends on !EXTERNAL_TOOLCHAIN-----------只要不用外部工具链，openWRT就选中该配置项进而自行编译安装所有工具和工具链。 ==================================================================================================================== 6.1 source "tmp/.config-package.in" menuconfig IMAGEOPT--------------一级菜单 bool "Image configuration" source "package/*/image-config.in"------类似Uboot传递的bootargs参数(如init=/bin ipaddr等环境变量) endmenu menu "Base system"--------------------------------一级菜单 config PACKAGE_Smartroom--------------------------自定义的模块 tristate "Smartroom............................................ wulian MT7620 tools" default y if DEFAULT_Smartroom default m if ALL select PACKAGE_libc select PACKAGE_librt select PACKAGE_libsqlite3 select PACKAGE_libstdcpp select PACKAGE_libpthread select PACKAGE_librt if USE_EGLIBC select PACKAGE_libpthread if USE_EGLIBC---优化场景执行功能；优化设备管理(网关重启后生效)。 config PACKAGE_base-files---------该配置项用于选中openWRT系统启动脚本 tristate "base-files................................... Base filesystem for OpenWrt" default y if DEFAULT_base-files default m if ALL select PACKAGE_libc select PACKAGE_procd-----------若配置了openWRT的系统启动脚本，那这些select选项必选。 select PACKAGE_netifd select PACKAGE_librt if USE_EGLIBC select PACKAGE_libpthread if USE_EGLIBC source "package/utils/busybox/Config.in"---------二级菜单，busybox的配置菜单 source "package/system/udev/Config.in"-----------二级菜单，udev的配置菜单(udev替代devfs及hotplug，管理/dev目录设备文件) config PACKAGE_wulian-tools tristate "wulian-tools......................................... wulian MT7620 tools" default y if DEFAULT_wulian-tools default m if ALL select PACKAGE_lua select PACKAGE_zlib select PACKAGE_libopenssl select PACKAGE_libpcre select PACKAGE_libstdcpp select PACKAGE_libpthread select PACKAGE_libpthread if USE_EGLIBC select PACKAGE_libc select PACKAGE_librt select PACKAGE_librt if USE_EGLIBC select PACKAGE_libsqlite3 endmenu menu "Boot Loaders"---------------部分硬件平台支持Uboot配置选项，选中后便可使用openWRT工程中的Uboot？ config PACKAGE_uboot-sunxi-pcDuino--------一级菜单 endmenu----------------------------------一级菜单结束 menu "Kernel modules"-----------一级菜单 menu "Block Devices"--------二级菜单 config PACKAGE_kmod-ata-core config PACKAGE_kmod-mvsas-----Kernel support for the Marvell SAS SCSI adapters。 endmenu--------------------二级菜单结束 menu "Wireless Drivers"--------二级菜单 config PACKAGE_kmod-rt2800-pci-----雷凌pci接口的网卡驱动，不是片上的WiFi驱动。 config PACKAGE_kmod-rt2800-usb-----雷凌USB接口的网卡驱动，不是片上的WiFi驱动。 endmenu--------------------二级菜单结束 。 。 。 endmenu--------------------一级菜单结束 menu "JavaScript"---------一级菜单，如下这些一级菜单均是可选择的，一般只选menu "Lua" ？ menu "Java" menu "Lua" menu "PHP" menu "Perl" menu "Ruby" menu "Libraries"------------一级菜单 menu "Filesystem"-------二级菜单 config PACKAGE_libattr----libattr库，为文件系统提供libattr库？ config PACKAGE_libext2fs---libext2fs is a library which can access ext2, ext3 and ext4 filesystems. endmenu----------------二级菜单结束 menu "Firewall"-------二级菜单 PACKAGE_libip4tc-----IPv4防火墙必需的libiptc开源库 endmenu------------二级菜单结束 source "package/libs/openssl/Config.in" source "feeds/packages/libs/gnutls/Config.in" source "package/libs/openssl/Config.in" menu "Sound"---------二级菜单 config PACKAGE_liblo------轻量级开源声音控制库 endmenu menu "Database"---------二级菜单 config PACKAGE_libsqlite2------开源数据库 config PACKAGE_pgsqlodbc----Postgresql driver for ODBC. endmenu |
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