Hello,
I am using the default httpd in CentOS 7.1, that is version 2.4.6-40.
I need to set the LD_LIBRARY_PATH variable so that it is available to CGI scripts as native system environment variable.
I do this by setting at the end of the file /etc/httpd/conf/httpd.conf:
setenv LD_LIBRARY_PATH <path>
I have always done this in previous versions and that has always worked fine.