On Fri, 2013-11-01 at 09:22 +0800, yin.yao wrote:
> Hi,
> I want to transplant netsnmp into my embedded device.
> Here is my configure option:
> CC=arm-none-linux-gnueabi-gcc ./configure
> --prefix=/usr/local/net-snmp-5.7.2/yaoyin
> --with-default-snmp-version="2" --with-logfile="/var/log/snmpd.log"
> --with-persistent-directory="/var/net-snmp"
> --host=arm-none-linux-gnueabi --disable-ipv6 --with-endianness=little
> --disable-embedded-perl --disable-perl-cc-checks
> --with-mib-modules="IPCBA-MIB" --disable-debugging
> --disable-applications --with-ldflags=-Bstatic
> For some reason,I don't use --enable-mini-agent .
> when I run snmpd in my embedded device,I encounter an error like
> this：
> Inconsistency detected by ld.so: dl-deps.c: 622: _dl_map_object_deps:
> Assertion `nlist > 1' failed!
> Then，I copy all libs into /usr/lib of my embedded device，these libs
> are below：
> libnetsnmp.a libnetsnmp.so.30.0.2 libnetsnmpagent.so.30
> libnetsnmp.la libnetsnmpagent.a
> libnetsnmpagent.so.30.0.2
> libnetsnmp.so libnetsnmpagent.la
> libnetsnmp.so.30 libnetsnmpagent.so
> After I do this, I run snmpd again. This time,everything is ok.
> But these lib are 16M . It's too large for my embedded device.
> Please help me solove this problem!!
The libraries contains parts of the application code so they are
necessary, but see below.
I will try to list your options in order of increasing painfulness :-)
* Add "CFLAGS=-Os" to the configure command line. This tell the
compiler to optimize for size.
* You do not need the .a and .la files, so do not copy those.
* Add "--enable-minimalist" to the configure command line, this
will remove a bunch of unused code.
Note that this option implicitly sets --enable-mini-agent so you
have to disable that manually with an extra --disable-mini-agent
after it on the configure command line.
* Add "--without-opaque-special-types" to the configure command
line, this removes an extension to the snmp protocol that you
probably won't need.
* Add "--disable-deprecated" to the configure command line, this
removes compatibility code that provided older interfaces that
shouldn't be used.
* You do not say it outright but if snmpd is the only program on
your device that uses the net-snmp libs then you could try to
link the application statically, this is done through the
configure flag "--disable-shared".
* Do consider using --enable-mini-agent - it's effect is to remove
some mib modules that aren't required.
Good luck.
/MF
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