Solaris apachectl script is using variable OPTIONS to start httpd, but it do not set is anywhere...
This can lead to issues when variable OPTIONS is set in system.

case $ACMD in
start|stop|restart|graceful|graceful-stop)
 $HTTPD $ROOTDIR $OPTIONS -k $ARGV
 ERROR=$?
;;

This will fail with httpd help message, but there is no info what's wrong.

export OPTIONS="I have no meaning!"
./apachectl start