openwrt安装依赖库

在openwrt-cgminerallcodeopenwrtfeedspackagesutils路径下增加eudev文件夹

eudev目录下有一些patches、配置文件以及makefile文件

Makefile文件中会说明安装包的一些信息：

#
# Copyright (C) 2006-2008 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#

include $(TOPDIR)/rules.mk

PKG_NAME:=eudev
PKG_VERSION:=3.2
PKG_RELEASE:=1

PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=http://dev.gentoo.org/~blueness/eudev/
PKG_MD5SUM:=7e42d9b9ed8162021665139520676367
PKG_LICENSE:=GPL-2.0

include $(INCLUDE_DIR)/package.mk

PKG_BUILD_DEPENDS:=gperf/host
PKG_FIXUP:=autoreconf
PKG_INSTALL=1

define Package/libudev
  SECTION:=libs
  CATEGORY:=Libraries
  TITLE:=Dynamic device management subsystem
  URL:=https://wiki.gentoo.org/wiki/Project:Eudev
  MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
endef

define Package/eudev
  SECTION:=base
  CATEGORY:=Base system
  TITLE:=Dynamic device management subsystem
  URL:=https://wiki.gentoo.org/wiki/Project:Eudev
  MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
  MENU:=1
  DEPENDS:=+EUDEV_EXTRA_blkid:libblkid +EUDEV_EXTRA_kmod:libkmod +librt +libudev
  PROVIDES:=udev
  CONFLICTS:=udev
endef

define Package/eudev/description
udev allows Linux users to have a dynamic /dev directory and it
provides the ability to have persistent device names.
eudev is a fork of systemd-udev with the goal of obtaining better
compatibility with existing software such as OpenRC and Upstart, older
kernels, various toolchains and anything else required by users and
various distributions.
endef

define Package/eudev/conffiles
/etc/udev/udev.conf
endef

define Package/eudev/config
	source "$(SOURCE)/Config.in"
endef

CONFIGURE_ARGS += 
	--prefix=/usr --exec-prefix= --sysconfdir=/etc 
	--libexecdir=/lib/udev --sbindir=/sbin 
	--disable-hwdb --disable-introspection --disable-manpages 
	--disable-selinux 
	$(if $(CONFIG_EUDEV_EXTRA_blkid),--enable-blkid,--disable-blkid) 
	$(if $(CONFIG_EUDEV_EXTRA_kmod),--enable-kmod,--disable-kmod)


eudev-extra-lib-bin-$(CONFIG_EUDEV_EXTRA_ata_id) += ata_id

eudev-extra-rules-$(CONFIG_EUDEV_EXTRA_blkid) += 60-persistent-storage.rules

eudev-extra-lib-bin-$(CONFIG_EUDEV_EXTRA_cdrom_id) += cdrom_id
eudev-extra-rules-$(CONFIG_EUDEV_EXTRA_cdrom_id) += 60-cdrom_id.rules

eudev-extra-lib-bin-$(CONFIG_EUDEV_EXTRA_collect) += collect

eudev-extra-rules-$(CONFIG_EUDEV_EXTRA_input_id) += 60-persistent-input.rules

eudev-extra-lib-bin-$(CONFIG_EUDEV_EXTRA_mtd_probe) += mtd_probe
eudev-extra-rules-$(CONFIG_EUDEV_EXTRA_mtd_probe) += 75-probe_mtd.rules

eudev-extra-lib-bin-$(CONFIG_EUDEV_EXTRA_scsi_id) += scsi_id

eudev-extra-lib-bin-$(CONFIG_EUDEV_EXTRA_v4l_id) += v4l_id
eudev-extra-rules-$(CONFIG_EUDEV_EXTRA_v4l_id) += 60-persistent-v4l.rules

define Build/InstallDev
	$(INSTALL_DIR) $(1)/usr/include
	$(CP) $(PKG_INSTALL_DIR)/usr/include/libudev.h $(1)/usr/include
	$(INSTALL_DIR) $(1)/usr/share/pkgconfig
	$(CP) $(PKG_INSTALL_DIR)/usr/share/pkgconfig/udev.pc $(1)/usr/share/pkgconfig
	$(INSTALL_DIR) $(1)/lib
	$(CP) $(PKG_INSTALL_DIR)/lib/libudev.so* $(1)/lib
	$(INSTALL_DIR) $(1)/usr/lib/pkgconfig
	$(CP) $(PKG_INSTALL_DIR)/lib/pkgconfig/libudev.pc $(1)/usr/lib/pkgconfig
endef

define Package/libudev/install
	$(INSTALL_DIR) $(1)/lib
	$(CP) $(PKG_INSTALL_DIR)/lib/libudev.so* $(1)/lib
endef

define Package/eudev/install
	$(INSTALL_DIR) $(1)/etc/udev/rules.d
	$(INSTALL_DATA) $(PKG_INSTALL_DIR)/etc/udev/udev.conf $(1)/etc/udev

	$(INSTALL_DIR) $(1)/sbin
	$(INSTALL_BIN) 
		$(PKG_INSTALL_DIR)/usr/bin/udevadm 
		$(PKG_INSTALL_DIR)/sbin/udevd 
		$(1)/sbin

	$(INSTALL_DIR) $(1)/lib/udev/rules.d
	$(INSTALL_DATA) 
		$(addprefix $(PKG_INSTALL_DIR)/lib/udev/rules.d/, 
			$(eudev-extra-rules-y)) 
		$(addprefix $(PKG_INSTALL_DIR)/lib/udev/rules.d/, 
			50-udev-default.rules 
			60-block.rules 
			60-drm.rules 
			60-evdev.rules 
			60-persistent-alsa.rules 
			60-persistent-storage-tape.rules 
			60-serial.rules 
			64-btrfs.rules 
			70-mouse.rules 
			75-net-description.rules 
			78-sound-card.rules 
			80-net-name-slot.rules) 
		$(1)/lib/udev/rules.d

ifneq ($(eudev-extra-lib-bin-y),)
		$(INSTALL_BIN) 
			$(addprefix $(PKG_INSTALL_DIR)/lib/udev/, 
				$(eudev-extra-lib-bin-y)) 
			$(1)/lib/udev/
endif
endef

$(eval $(call BuildPackage,eudev))
$(eval $(call BuildPackage,libudev))

具体makefile文件编写的格式可参考：

https://www.freesion.com/article/3323420807/

这个eudev文件是我从其他源码中拷贝的。

然后执行下面两条命令：

./script/feeds update packages
./script/feeds install -a -p packages

在执行第二条命令时就可以看到打印信息显示eudev安装成功。

这个时候make menuconfig进去libraries项可以看到libudev的配置。

在.packageinfo文件中也可以看到这个库的具体信息：

从上述信息可以看出安装包名字为eudev-3.2.tar.gz。此时我会拷贝一个eudev包到dl文件夹中去，在编译时就会直接使用，不用编译时才下，缩短编译时间。