Error ./configure?

Question

linux

Good afternoon.
I made a similar error, which I have never identified before:

[keepalived-1.2.7]$ ./configure --prefix=/opt/local/keepalived --enable-snmp

checking how to run the C preprocessor... gcc -E
checking for grep that handles long lines and -e... configure: error: no acceptable grep could be found in /opt/sbin:/opt/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/xpg4/bin

There is an asus wl-500 router, it needs keepalived software, there is no such package in the repository. I decided to collect their sorts by hand www.keepalived.org/

Answer 1

Says that there is no suitable grep. So you also need to find grep first.

Answer 2

Are you collecting chtol directly on the router?
Your grep is missing, which is actually very strange.
ipkg install coreutils
ipkg install findutils
ipkg install diffutils
Try to run these commands on the router first, only then build it.