OpenWrt之自定义Firmware Version

首先，找到显示Firmware Version的代码，在/usr/lib/lua/luci/version.lua中：

root@OpenWrt:/usr/lib/lua/luci# cat version.lua 
local pcall, dofile, _G = pcall, dofile, _G

module "luci.version"

if pcall(dofile, "/etc/openwrt_release") and _G.DISTRIB_DESCRIPTION then
        distname    = ""
        distversion = _G.DISTRIB_DESCRIPTION
        if _G.DISTRIB_REVISION then
                distrevision = _G.DISTRIB_REVISION
                if not distversion:find(distrevision,1,true) then
                        distversion = distversion .. " " .. distrevision
                end
        end
else
        distname    = "OpenWrt"
        distversion = "Development Snapshot"
end

luciname    = "LuCI Master"
luciversion = "git-23.279.81765-f7ab758"

故需要修改/etc/openwrt_release文件，查看其原本内容，可以直接在package/base-files这个package中修改此文件。

但是这样就是每次都需要重新编译base-files这个package。

最好应该是在打包文件系统时修改，这样每次打包rootfs都会重新编译。

根据打包的日志，找到执行打包的地方，在include/image.mk中，做如下修改：

diff --git a/include/image.mk b/include/image.mk
index 096ccb5..83b6ce6 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -237,6 +237,7 @@ $(eval $(foreach S,$(JFFS2_BLOCKSIZE),$(call Image/mkfs/jffs2/template,$(S))))
 $(eval $(foreach S,$(NAND_BLOCKSIZE),$(call Image/mkfs/jffs2-nand/template,$(S))))
 
 define Image/mkfs/squashfs-common
+       $(STAGING_DIR_HOST)/bin/version_maker.sh $(call mkfs_target_dir,$(1))
        $(STAGING_DIR_HOST)/bin/mksquashfs4 $(call mkfs_target_dir,$(1)) $@ \
                -nopad -noappend -root-owned \
                -comp $(SQUASHFSCOMP) $(SQUASHFSOPT)

同时，在staging/host/bin目录下，新增脚本version_maker.sh，具体如下：

#!/bin/sh
main() {
    local file=`find $1 -name openwrt_release`
    # echo "file:$file"
    [ ! -f $file ] && return

    local D=$(TZ=UTC-8 date +%Y%m%d)
    local T=$(TZ=UTC-8 date +%H%M%S)
    sed -i "s/^DISTRIB_RELEASE=.*/DISTRIB_RELEASE='Adam Build $D Rel\. $T'/g" $file
    sed -i "s/^DISTRIB_DESCRIPTION=.*/DISTRIB_DESCRIPTION=\'Adam Build $D Rel\. $T\'/g" $file
}

main $1

注意给文件添加可执行权限：