When using the zip distribution with a non-default SSLCryptoDevice on httpd (mod_ssl) httpd cannot start

1) Install JBCS httpd and cd into the $JBCS_HOME/httpd directory 2) Configure SSLCryptoDevice in conf.d/ssl.conf to use something other than builtin, such as SSLCryptoDevice chil . Note that you don't have to have the hardware to demonstrate the issue. 3) Try and start httpd using strace so that you can check the directory that it checks for engines # strace -fvttT -s 256 -o strace.out sbin/apachectl start 4) Check the strace to see that it's checking the wrong path for engines. It should be using $JBCS_HOME/httpd/lib/engines to lookup the libchil.so library. # grep libchil strace.out -A2 1767 11:51:37.321058 open("/opt/rh/jbcs-httpd24/root/usr/lib64/openssl/engines/libchil.so", O_RDONLY) = -1 ENOENT (No such file or directory) <0.000005> 1767 11:51:37.321096 write(2, "AH00526: Syntax error on line 71 of /root/jbcs-httpd24-2.4/httpd/conf.d/ssl.conf:\n", 82) = 82 <0.000008> 1767 11:51:37.321116 write(2, "SSLCryptoDevice: Invalid argument; must be one of: 'builtin' (none), 'rdrand' (Intel RDRAND engine), 'dynamic' (Dynamic engine loading support)\n", 144) = 144 <0.000004> 5) Observe that httpd has not started and you see an error in the httpd.log. Note that httpd shouldn't start if the engine is missing, but here mod_ssl is checking the wrong place for the engine.