a) When installing some package you might get the error: .
This happens because you have an old version of: tar (<1.28), xz (<5.2.0) and/or gzip (<1.6).
Upgrade your system with exactly these packages: 
tar-1.28-arm-0. and xz-5.2.0-arm-0. (e.g.: funpkg -u tar-1.28-arm-0.tgz).
And don't worry, old archive will unpack too with these new versions.
Then install/upgrade the gzip package too: slacker -iu gzip.

b) These packages are compiled with optimizations for NSA310's processor:
root@nsa310:~# cat /proc/cpuinfo
Processor       : Feroceon 88FR131 rev 1 (v5l)
BogoMIPS        : 1199.30
Features        : swp half thumb fastmult edsp
CPU implementer : 0x56
CPU architecture: 5TE
CPU variant     : 0x2
CPU part        : 0x131
CPU revision    : 1
Hardware        : Feroceon-KW
Revision        : 0000
Serial          : 0000000000000000
root@nsa310:~# /bin/dmesg | grep 'ARM'
CPU: Feroceon 88FR131 [56251311] revision 1 (), cr=00053977

c) It's important to install the kernel headers 2.6.31.8:
Take it from here (from Mijzelf's repository).
Or take it from my repository too (I copied from Mijzelf's reopsitory just as a convenience for you).

d) It's mandatory to install the following packages (my packages depend on them):
br2:uClibc-0.9.33.3_git-arm-3
br2:uClibc-solibs-0.9.33.3_git-arm-3
Use the command:
slacker -a uClibc

e) Required libraries can be detected using lddd (see lddd software and usage here-short-story or here-long-story).
Any required library will be found above.
Usually when a missing-library error occurs the message provided it's enough for detecting the missing library/package.

f) Special naming conventions:
php-mysql-5.6.21-5.5.18-arm-0.txz	-> it's php-5.5.18 using mysql-5.6.21 at compile time
php-mysql-5.6.21-5.6.5-zts-arm-0.txz	-> it's php-5.6.5 with threads support (zts) using mysql-5.6.21 at compile time
There's no big difference between mysql-5.6.x versions so php compiled with mysql-5.6.21 will work well with any mysql-5.6.x.

g) When more packages for same library/software exists than the last is the best; just as 
a safeguard I keep for some time the previous compiled versions too. Here's an example:	
sample_package-1.01-arm-0.txz
sample_package-1.01-arm-1.txz		-> this is the last

h) The mysql's building process does not create the system database so I don't include it into the package.
After installing mysql package you'll have to create it by yourself using /ffp/scripts/mysql_install_db. 
If you are really lazy just use the commands written here (CREATE MYSQL SYSTEM DB).
Also you might need mysqld.sh in order to automatically start mysql at boot time (put it in /ffp/start/).

i) the package wget-1.16-arm-0.txz supports https