openwrt上opkg安裝squid_3.5.27

手頭有塊板子沒有squid，需要安裝，剛好環境中有編譯好的squid_3.5.27-1_ramips_24kec.ipk。

root@DrogooBox:/mnt/mmcblk0p1/opkgbin# ./opkg-cl install /mnt/mmcblk0p1/squid_3.
5.27-1_ramips_24kec.ipk 
Installing squid (3.5.27-1) to root...
Collected errors:
 * satisfy_dependencies_for: Cannot satisfy the following dependencies for squid:
 *      libltdl *       libstdcpp * 
 * opkg_install_cmd: Cannot install package squid.

缺少另外兩個依賴libltdl_2.4-1_ramips_24kec.ipk和libstdcp
p_4.8-linaro-1_ramips_24kec.ipk 。沒關係，繼續安裝就可以了，這兩個ipk在編譯環境中的路徑

bin/ramips/packages/base/

下可以找到。
但是，安裝libltdl_2.4-1_ramips_24kec.ipk的時候可能會報錯：

root@DrogooBox:/mnt/mmcblk0p1/opkgbin# ./opkg-cl install /mnt/mmcblk0p1/libltdl_
2.4-1_ramips_24kec.ipk 
Installing libltdl (2.4-1) to root...
Configuring libltdl.
//usr/lib/opkg/info/libltdl.postinst: line 4: default_postinst: not found
Collected errors:
 * pkg_run_script: package "libltdl" postinst script returned status 127.
 * opkg_configure: libltdl.postinst returned 127.

default_postinst找不到，直接去看/usr/lib/opkg/info/libltdl.postinst

#!/bin/sh
[ "${IPKG_NO_SCRIPT}" = "1" ] && exit 0
. ${IPKG_INSTROOT}/lib/functions.sh
default_postinst $0 $@

從腳本看應該是在/lib/functions.sh中有定義，找了一圈沒有，問了度娘和谷歌，有人直接暴力添加，那就這樣吧，直接在/lib/functions.sh中添加兩個函數：

default_postinst(){
        return 0
}
default_prerm(){
        return 0
}

繼續安裝

root@DrogooBox:/mnt/mmcblk0p1/opkgbin# ./opkg-cl install /mnt/mmcblk0p1/libltdl_
2.4-1_ramips_24kec.ipk 
Installing libltdl (2.4-1) to root...
Configuring libltdl.
root@DrogooBox:/mnt/mmcblk0p1/opkgbin# ./opkg-cl install /mnt/mmcblk0p1/libstdcp
p_4.8-linaro-1_ramips_24kec.ipk 
Installing libstdcpp (4.8-linaro-1) to root...
Configuring libstdcpp.
root@DrogooBox:/mnt/mmcblk0p1/opkgbin# ./opkg-cl install /mnt/mmcblk0p1/squid_3.
5.27-1_ramips_24kec.ipk 
Installing squid (3.5.27-1) to root...
Configuring squid.
root@DrogooBox:/mnt/mmcblk0p1/opkgbin# squid -h
Usage: squid [-cdhvzCFNRVYX] [-n name] [-s | -l facility] [-f config-file] [-[au] port] [-k signal]
       -a port   Specify HTTP port number (default: 3128).
       -d level  Write debugging to stderr also.
       -f file   Use given config-file instead of
                 /etc/squid/squid.conf
       -h        Print help message.
       -k reconfigure|rotate|shutdown|restart|interrupt|kill|debug|check|parse
                 Parse configuration file, then send signal to 
                 running copy (except -k parse) and exit.
       -n name   Specify service name to use for service operations
                 default is: squid.
       -s | -l facility
                 Enable logging to syslog.
       -u port   Specify ICP port number (default: 3130), disable with 0.
       -v        Print version.
       -z        Create missing swap directories and then exit.
       -C        Do not catch fatal signals.
       -D        OBSOLETE. Scheduled for removal.
       -F        Don't serve any requests until store is rebuilt.
       -N        No daemon mode.
       -R        Do not set REUSEADDR on port.
       -S        Double-check swap during rebuild.
       -X        Force full debugging.
       -Y        Only return UDP_HIT or UDP_MISS_NOFETCH during fast reload.

最後安裝squid的時間可能會長一點，因爲squid還挺大的，squid_3.5.27-1_ramips_24kec.ipk大概1.5MB。