slackbuilds_ponce/libraries/dietlibc/README.SLACKWARE

You can verify that dietlibc was successfully installed on your system
by entering the following on a bash prompt, f.e.:

printf '#include <unistd.h>\nint main(){write(1,"hello\\n",6);}\n' >_tmp.c
diet gcc -O2 -s _tmp.c
./a.out

you should see "hello" printed on screen

"size a.out" entered on prompt should print something like like this: 

text    data     bss     dec     hex filename
679        8      40     727     2d7 a.out

Please note: You may get strange results on Slackware 13-64 multilib systems,
(like $ARCH being ignored by dietlibc's make itself).
Therefore it is recommended to build only on clean (64/32bit) installs.