Error in invoking target ‘agent nmhs’ of makefile when installing Oracle 11g in Linux 7

Solution
add parameters linking libnnz11 Library in makefile
Modify $Oracle_HOME/sysman/lib/ins_ emagent. MK, modify
$(mk_event_nmectl) to $(mk_event_nmectl) – lnnz11
it is recommended to back up the original file before modification
[ oracle@ysserver ~]$ cd $ORACLE_ HOME/sysman/lib
[ oracle@ysserver lib]$ cp ins_emagent.mk ins_emagent.mk.bak
[ oracle@ysserver lib]$ vi ins_emagent. mk

After entering the VI editor, enter/nmectl in the command mode to quickly locate the line to be modified
append parameters -lnnz11 þ the first is the letter L þ the last two are the numbers 1

Save and exit retry