Could not find pcre.h in /opt/ntphp/pcre

[idagroup]

Installation fails with:

checking for PCRE support... yes
configure: error: Could not find pcre.h in /opt/ntphp/pcre
COMPILE ERROR FOR 52
Exiting Installation

Server details:
# cat /etc/centos-release
CentOS release 6.7 (Final)
# php --version
PHP 5.5.32 (cli) (built: Mar 7 2016 22:13:14)


Steps taken:
tried install with
https://nixtree.com/download/free/ntphp ... ge_beta.sh
and also with
wget https://nixtree.com/blog/ntphpselector- ... -0-0-beta/
both showed the same error

[idagroup]

...additionally also tried with https://nixtree.com/download/free/ntphp ... _manage.sh , but again same error.