System Configuration
Ubuntu 14.04
Xampp v 5.6.3
installed php5-dev after xampp on
sudo /opt/lampp/lampp start
now want to install Xdebug wihin xampp and I tried available 3 method but nothing is working out , please see the whole process.
1)Ubuntu software package
sudo apt-get install php5-xdebug
command exceuted successfully but no such file in .usr/lib/php5/...
uninstalled
2)Tailored Installation Instructions
downloaded xdebug.tar.gz after checking with wizard
ice@cold:~/Downloads/xdebug-2.2.6$ /usr/bin/phpize5
/usr/bin/phpize5 Cannot find config.m4.
Make sure that you run '/usr/bin/phpize5' in the top level source directory of the module
also tried with phpize, /opt/lampp/bin/phpize but not working out
3)PECL Installation
before that let me check with pecl help version
PEAR Version: 1.9.4
PHP Version: 5.5.9-1ubuntu4.5 Zend Engine Version: 2.5.0
Running on: Linux ice-cold 3.13.0-39-generic #66-Ubuntu SMP Tue Oct 28 13:30:27 UTC 2014 x86_64
pecl install xdebug
...
...
Build process completed successfully
Installing '/usr/lib/php5/20121212/xdebug.so'
install ok: channel://pecl.php.net/xdebug-2.2.6
configuration option "php_ini" is not set to php.ini location
You should add "zend_extension=xdebug.so" to php.ini
executed completely
I can see the file
644 /usr/lib/php5/20121212/xdebug.so
added below line in /opt/lampp/etc/php.ini
[xdebug]
zend_extension="/usr/lib/php5/20121212/xdebug.so"
restart lampp
but still xdebug icon is missing 
Please tell me what is wrong

php.inimake sure enable it.php.iniI havn't seen any entry for xdebug in latest xamppp