CloudLinux Uninstall : Easyapache error : configure: error: C preprocessor “/lib/cpp” fails sanity check

I was testing CloudLinux on a production server however it turned out bad and had to remove it. After removing the kernel and reboot, last step was to run easyapache which gave errors as below :

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checking how to run the C preprocessor... /lib/cpp
configure: error: in `/home/cpeasyapache/src/httpd-2.2.23/srclib/apr':
configure: error: C preprocessor "/lib/cpp" fails sanity check
See `config.log' for more details
configure failed for srclib/apr
==========

Further checking i found that the kernel-headers package was missing which was installed using command :

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yum install kernel-headers-$(uname -r)
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After installing kernel headers easyapache executed fine and the server was free from CloudLinux. 🙂