If you are really bored, you could use gcc 4.5 and link time optimization.
Support for it is already enabled in the openwrt gcc, but you have to
add the compiler flags to use it to packages and/or the kernel. In
theory, it could reduce the binary size, but I have no idea how well
this will work in practice or if it works at all.
Bernhard
2010/5/9 Matthias Buecher / Germany <m...@maddes.net>:
> I could finally install everything onto my 4MB WRT54g v2.2.
>
> Avoided ntpclient plus dependencies with the patch from #7316.
> Added BusyBox's ether-wake to the build.
> Put all kmods (2) I needed into the kernel.
> This freed up enough JFFS2 space to normally install OpenVPN and a
> web-interface (here webif).
>
> Would be great if #7316 and its dependency #7312 could be committed to
> trunk and backfire.
> After this I would also update the ntpclient package to reduce flash mem
> usage for it too,
>
> Kind regards
> Maddes
>
> P.S.:
> Thanks Bastian for all the quick infos.
>
> On 04.05.2010 16:27, Matthias Buecher / Germany wrote:
>> Can I save space in the flash mem when I add all needed packages
>> directly to the image?
>> Or is the JFFS2 compression as good as the compression of the read-only
>> squashfs?
>>
>> I'm also going to replace ntpclient with rdate.
>> As the clock of the WRT54G is very inaccurate it will not be sufficient
>> to update the clock every 24h when my provider restarts the connection.
>> Will have to add a cron job for rdate.
>>
>> Maddes
>>
>> On 30.04.2010 22:23, Matthias Buecher / Germany wrote:
>>> I wanted to upgrade my mom's WRT54G v2.2 from WR 0.9 to Backfire 10.03.
>>> But during installation the flash space got full and OpenVPN couldn't be
>>> installed.
>>>
>>> First I built an image without luci, then all packages fit into the
>>> flash mem.
>>> But when installing webif I got the same "disk full" error for it.
>>> Putting all needed kmods directly into the kernel didn't free enough space.
>>>
>>> Then I checked the sizes and dependencies of the needed packages between
>>> WR and Backfire.
>>> It turned out that OpenVPN installation grew by 148KB, and that BF had
>>> some more dependencies than WR.
>>>
>>> What is the smallest version of Luci possible? (luci-admin-mini + ???)
>>> Can OpenVPN be compiled to a smaller size?
>>> Is there a reason why OpenVPN grew so much, besides being a newer version?
>>> Is there a reason why OpenVPN needs zlib, besides being a newer version?
>>>
>>> Any help greatly appreciated
>>> Maddes
>>>
>>>
>>> Here is the list of the packages I need, plus a size comparison between
>>> WR 0.9 <-> Backfire.
>>>
>>> iptables-mod-[conntrack-]extra 8603 -> 15081
>>> kmod-ipt-[conntrack-]extra 14188 -> 10446
>>>
>>> ntpclient 11397 -> 17461
>>> librt n/a -> 1102
>>>
>>> ddns-scripts (ez-ipudate) 26368 -> 6570
>>>
>>> openvpn 137843 -> 195446 (+58KB, 2.0.8 -> 2.1.1)
>>> kmod-tun 4944 -> 4860
>>> libopenssl 445303 -> 500879 (+55KB, 0.9.8d -> 0.9.8m)
>>> liblzo 29113 -> 28782
>>> zlib n/a -> 35023 (+35KB)
>>>
>>> sslh n/a -> 7333
>>>
>>> etherwake (ether-wake) 4799 -> 6078
>>>
>>> webif 155712 -> 168862
>>> webif-theme-xwrt 3765 -> n/a
>>> haserl 8210 -> 12277
>>> uhttpd (in busybox?) -> 22110
>>>
>>
>> _______________________________________________
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>> openwrt-devel@lists.openwrt.org
>> https://lists.openwrt.org/mailman/listinfo/openwrt-devel
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