1. download source file (that is ffmpeg in this example)
2. retrieve development library/build dependecies
3. place header files and dependency libraries into toolchain path
4. configure with toolchain
5. make and create .deb installer package with checkinstall

cross-compile: Illustration of what's done on ARM-board and what's done on desktop

Prior to anything, install Linaro toolchain by adding their repo first:

$ sudo add-apt-repository ppa:linaro-maintainers/toolchain
$ sudo apt-get install gcc-arm-linux-gnueabi

A complete guide on how to compile ffmpeg can be found in their wiki. It applies generally. So, I’ll just skip to following configure:

[ubuntu-desktop]$ ./configure --cross-prefix=arm-linux-gnueabi- --enable-cross-compile --target-os=linux --arch=arm  --cpu=cortex-a8 --extra-cflags='-march=armv7-a -mfpu=neon -mfloat-abi=softfp' --enable-libtheora

As an example, the above configure requires Theora libraries. libtheora-dev itself requires libogg-dev. Use apt-get on the board to get them from Ubuntu ARM repository. Get the .deb files from /var/cache/apt/archives/ of the ARM-board to your desktop and extract them as root:

[root@ubuntu-desktop]$ dpkg -x libogg-dev_1.2.2~dfsg-1ubuntu1_armel.deb /usr/local/cross-compile
[root@ubuntu-desktop]$ dpkg -x libtheora-dev_1.1.1+dfsg.1-3_armel.deb /usr/local/cross-compile

The above /usr/local/cross-compile is just a temporary directory. The toolchain needs header files and dependency libraries to be placed inside /usr/arm-linux-gnueabi/include/ and /usr/arm-linux-gnueabi/lib/ consecutively. In my case I created the following link for header’s include:

[root@ubuntu-desktop]$ cd /usr/arm-linux-gnueabi/include
[root@ubuntu-desktop]$ ln -s /usr/local/cross-compile/usr/include/theora
[root@ubuntu-desktop]$ ln -s /usr/local/cross-compile/usr/include/ogg

and copied these from /usr/local/cross-compile/usr/lib:

libogg.a
libogg.so
libtheora.a
libtheoradec.a
libtheoradec.la
libtheoradec.so
libtheoraenc.a
libtheoraenc.la
libtheoraenc.so
libtheora.la
libtheora.so

After successful configure, run make (this will take some time), and then pack the whole working directory to the ARM-board. Instead of doing make install in the ARM-board, use checkinstall to install and create the .deb package. This way we can make use of dpkg to uninstall or re-install in the manner of package manager.

[root@beagleboard]$ sudo checkinstall --pkgname=ffmpeg --pkgversion="5:$(./version.sh)" \
     --backup=no --deldoc=yes --default

Please mind that even if we put “--install=no“, the above checkinstall will overwrite all ffmpeg binaries in /usr/local/bin/. This is the reason why I move the process to the ARM-board: to keep other running version on my desktop stays as it is.

Check the test of streaming from our cross-compiled ffmpeg in previous post.

A Little History

When first attempt to configure exited with ERROR: libtheora not found, I found the following test failed in the output log:

$ arm-linux-gnueabi-gcc -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -march=armv7-a -mfpu=neon -mfloat-abi=softfp -mcpu=cortex-a8 -std=c99 -fomit-frame-pointer -marm -pthread -E -o /tmp/ffconf.UdYctJgq.o /tmp/ffconf.mwXpf9Tl.c
...
/usr/lib/gcc/arm-linux-gnueabi/4.6.1/../../../../arm-linux-gnueabi/bin/ld: cannot find -ltheoraenc
/usr/lib/gcc/arm-linux-gnueabi/4.6.1/../../../../arm-linux-gnueabi/bin/ld: cannot find -ltheoradec
/usr/lib/gcc/arm-linux-gnueabi/4.6.1/../../../../arm-linux-gnueabi/bin/ld: cannot find -logg

What was inside the above temporary file (/tmp/ffconf.mwXpf9Tl.c):

1
2

#include <theora/theoraenc.h>
int x;

You can run that test to check whether all dependencies are met.

Zabbix Proxy Distributed NMS

An example set out for Zabbix Proxy on Debian appears to be pretty straightforward to follow. With the ARM board already installed with build-essential, snmp, and snmpd, the following needs to be added:

$ sudo apt-get install libsnmp-dev libcurl4-openssl-dev fping curl sqlite libsqlite3-dev ntpdate

then start the pre-compilation configure (in this case Zabbix 1.8.7 is used):

cd zabbix-1.8.7
./configure --enable-proxy --enable-agent --with-sqlite3 --with-net-snmp --with-libcurl

It will go smooth. However, during make there are complains about undefined references to ‘sqlite3_open‘, ‘sqlite3_close‘, etc.:

../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_connect':
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:331: undefined reference to `sqlite3_open'
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:343: undefined reference to `sqlite3_busy_timeout'
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:334: undefined reference to `sqlite3_errmsg'
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:335: undefined reference to `sqlite3_close'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_init':
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:385: undefined reference to `sqlite3_open'
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:387: undefined reference to `sqlite3_errmsg'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_close':
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:446: undefined reference to `sqlite3_close'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_vexecute':
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:827: undefined reference to `sqlite3_exec'
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:852: undefined reference to `sqlite3_changes'
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:833: undefined reference to `sqlite3_free'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `SQ_DBfree_result':
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:1363: undefined reference to `sqlite3_free_table'
../../src/libs/zbxdb/libzbxdb.a(db.o): In function `zbx_db_vselect':
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:1121: undefined reference to `sqlite3_get_table'
/home/zabbix/zabbix-1.8.7/src/libs/zbxdb/db.c:1127: undefined reference to `sqlite3_free'

this is obviously from the database related code compilation. I run the gcc manually for the db.c file inside its directory by adding the flag ‘-lsqlite3‘ in the tail of ‘../../src/libs/zbxdb/libzbxdb.a‘ to make it work. Afterward by going to the initial directory first, running make again will then continue successfully.

$ cd src/zabbix_proxy
$ gcc -DZABBIX_DAEMON -g -O2     -L/usr/lib/arm-linux-gnueabi    -I/usr/local/include -I/usr/lib/perl/5.12/CORE -I. -I/usr/include      -I/usr/include -lsqlite3  -L/usr/lib/arm-linux-gnueabi -lcurl  -L/usr/lib -lnetsnmp -lcrypto  -L/usr/lib -lnetsnmp -lcrypto   -rdynamic    -o zabbix_proxy zabbix_proxy-servercomms.o zabbix_proxy-events.o zabbix_proxy-zlog.o zabbix_proxy-proxy.o heart/libzbxheart.a ../../src/zabbix_server/dbsyncer/libzbxdbsyncer.a ../../src/zabbix_server/discoverer/libzbxdiscoverer.a housekeeper/libzbxhousekeeper.a ../../src/zabbix_server/httppoller/libzbxhttppoller.a proxyconfig/libzbxproxyconfig.a ../../src/zabbix_server/pinger/libzbxpinger.a ../../src/zabbix_server/poller/libzbxpoller.a ../../src/zabbix_server/trapper/libzbxtrapper.a ../../src/zabbix_server/nodewatcher/libzbxnodewatcher.a datasender/libzbxdatasender.a ../../src/zabbix_server/selfmon/libzbxselfmon.a ../../src/libs/zbxsysinfo/libzbxserversysinfo.a ../../src/libs/zbxsysinfo/linux/libspecsysinfo.a ../../src/libs/zbxsysinfo/common/libcommonsysinfo.a ../../src/libs/zbxsysinfo/simple/libsimplesysinfo.a ../../src/libs/zbxlog/libzbxlog.a ../../src/libs/zbxdbcache/libzbxdbcache.a ../../src/libs/zbxmemory/libzbxmemory.a ../../src/libs/zbxalgo/libzbxalgo.a ../../src/libs/zbxnix/libzbxnix.a ../../src/libs/zbxsys/libzbxsys.a ../../src/libs/zbxconf/libzbxconf.a ../../src/libs/zbxcommon/libzbxcommon.a ../../src/libs/zbxcrypto/libzbxcrypto.a ../../src/libs/zbxcomms/libzbxcomms.a ../../src/libs/zbxcommshigh/libzbxcommshigh.a ../../src/libs/zbxjson/libzbxjson.a ../../src/libs/zbxexec/libzbxexec.a ../../src/libs/zbxself/libzbxself.a ../../src/libs/zbxserver/libzbxserver.a ../../src/libs/zbxicmpping/libzbxicmpping.a ../../src/libs/zbxdbhigh/libzbxdbhigh.a ../../src/libs/zbxdb/libzbxdb.a -lsqlite3 -lcurl  -lnetsnmp    -lm  -lresolv
$ cd ../../
$ make

I decided to install in RedHat 5.2. Maybe it is easier in Ubuntu (Nagios 3 already listed in the repository, but I haven’t tried it). As pointed out by the quickstart (it is meant for Fedora by the way), requirements are:

1. php, httpd
2. gcc, glibc, glibc-common
3. gd, gd-devel

After getting those, the configure-make-install procedure runs well, except that I don’t check the warnings. It turns out that only some of Nagios core components are installed. It can be seen from the content of /usr/local/nagios/libexec directory. There is no check_snmp etc. Error also appears in statusmap page of Nagios.

Compile More Nagios Core Components

I run through ./configure once more, check out all warnings, and begin to evaluate requirements (found this text inside nagios-plugins-1.4.14 tarball)

MySQL

For check_mysql functionality, mysql (MySQL client for linux) must be installed. ./configure also test this client, by default config, to the local MySQL socket, hence mysql-server must also exist.

Radius Client

Client from freeradius package doesn’t meet Nagios requirements. It must be the ones from original radiusclient, I found RPMs for radiusclient-0.3.2-0.2.el5.rf.i386.rpm and radiusclient-devel-0.3.2-0.2.el5.rf.i386.rpm.

GD

It is quite tricky to get statusmap.c to be compiled for the .cgi of Nagios status map. Compilation needs gd library from http://www.libgd.org/. gd requires zlib, libjpeg, and libpng. On first attempt, I installed from RPMs. This appeared to be not working as I could still see warnings about gd2 during ./configure.

So, I choose to compile from the source gd-2.0.33.tar.bz2. This tarball was found in the older section of current gd2 web. I chose this version because the RPM used was gd-2.0.33-9.4.el5_1.1.rpm. I removed this RPM first which made me to remove also libmwf and ImageMagick.

After straightforward  configure-make-install the library will be installed under /usr/local/lib i.e libgd.so.2.0.0. Header files will also be available in /usr/local/include i.e gd.h. These are different from the situation when I installed from RPM where libgd.so.2.0.0 is under /usr/lib/ and no gd.h found under /usr/include.

So, I make devclean and rerun

./configure --with-gd-lib=/usr/local/lib --with-gd-inc=/usr/local/include --with-command-group=nagcmd

I configure the /usr/local/nagios/etc/cgi.conf but status map page is still empty. Next workaround is to install back  gd-2.0.33-9.4.el5_1.1.rpm. (which also bring back libmwf and ImageMagick) and point the gd library to the ones created from RPM. I make devclean and rerun:

./configure --with-gd-lib=/usr/lib --with-gd-inc=/usr/local/include --with-command-group=nagcmd

At this point I regret not to have Ubuntu implementation in the first place. Just a small regret.

Other library needed for check_smtp, check_http, etc. don’t seem to trouble me much, I need openssl, openldap, etc. and simply get them from RPMs.

$ sudo make install

After that I test tagsistant to organize /data/tags/

$ tagsistant /data/tags

The tagging works as expected but not too handy since no browser GUI is embedded. It is just like browsing through multiple OR and AND folders.

The installation process will also install tagman (a tag manager GUI) if libgtk2.0-dev and libglib2.0-dev are installed.

wget http://foo2zjs.rkkda.com/foo2zjs.tar.gz
wget http://foo2zjs.rkkda.com/firmware/sihpP1006.tar.gz

First, I remove foo2zjs that was installed by default. After (1) make and (2) copy the unpacked HP driver to foo2zjs directory. Do the (3) make install and make install-hotplug.

Run cups and the printer will be listed in the usual list (after a series of regular add new printer).