Ld not finding library installed in /usr/local/lib

Welp, I don’t know what is going on here, but, I have no issues doing this:

# cat /etc/ld.so.conf
include /etc/ld.so.conf.d/*.conf
# cat /etc/ld.so.conf.d/local.conf 
/usr/local/lib
# ldconfig
# ldconfig -p | grep local
	libwhich.so.0 (libc6,x86-64) => /usr/local/lib/libwhich.so.0
<snip>

It… just works, sorry. (29690)