Using Linux(Ubuntu) for Symbian.C++ 3rd edition application

Below are the steps i followed.
Step 1: Setup EPOCROOT and Points where you have symbian tools.
a) export PATH=~/gnupoc:${PATH}
b) export EPOCROOT=~/symbian-sdks/s60_31/

Step 2: Compile source code
a) cd ~/symbian-sdks/s60_31/s60ex/helloworldbasic/group
b) bldmake bldfiles
c) abld build gcce urel

Step 3: Create a SIS File
a) cd ../sis
b) makesis helloworldbasic_gcce.pkg helloworldbasic.sis

Step 4: Genearet key and certificate pair
makekeys -cert myselfcer.key myselfcer.cer

Step 5: Sign SIS
signsis helloworldbasic.sis helloworldbasic.sisx myselfcer.cer myselfcer.key