httpd fails to start if apr/apr-util is installed prior to installing jbcs-httpd24-httpd

1) Install apr and apr-util: $ yum install apr apr-util -y 2) Install jbcs-httpd24-httpd: $ yum install jbcs-httpd24-httpd -y 3) Try to start the service (this is rhel-6 output, but the problem affects rhel-7 too it just manifests a bit differently): Starting httpd: /opt/rh/jbcs-httpd24/root/usr/sbin/httpd: symbol lookup error: /opt/rh/jbcs-httpd24/root/usr/sbin/httpd: undefined symbol: apr_crypto_init [FAILED] 4) (Optional) You can verify that the linkages in the httpd binary are incorrect with ldd: # ldd /opt/rh/jbcs-httpd24/root/usr/sbin/httpd | grep apr libaprutil-1.so.0 => /lib64/libaprutil-1.so.0 (0x00007fa5b5147000) libapr-1.so.0 => /lib64/libapr-1.so.0 (0x00007fa5b492f000) The ldd output should look like this: # ldd /opt/rh/jbcs-httpd24/root/usr/sbin/httpd | grep apr libaprutil-1.so.0 => /opt/rh/jbcs-httpd24/root/usr/lib64/libaprutil-1.so.0 (0x00007fe11191d000) libapr-1.so.0 => /opt/rh/jbcs-httpd24/root/usr/lib64/libapr-1.so.0 (0x00007fe111100000)