Ensure host libraries are not picked up
--- ../configure.orig	2020-07-06 08:56:18.121237416 +0200
+++ ./configure	2020-07-06 08:56:42.224520722 +0200
@@ -7361,24 +7361,6 @@
 _ACEOF
 
 
-for lib in bsd BSD 44bsd socket nsl dld dl
-do
- lib=$lib
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -l$lib" >&5
-$as_echo_n "checking for -l$lib... " >&6; }
- extlib="not found"
- for dir in /lib /usr/lib /usr/local/lib /usr/ucblib /usr/ccslib /usr/ccs/lib /lib64 /usr/lib64
- do
-   if test -f $dir/lib$lib.a -o -f $dir/lib$lib.so ; then
-    LIBS="$LIBS -l$lib"
-    extlib="found at $dir"
-    break
-   fi
- done
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $extlib" >&5
-$as_echo "$extlib" >&6; }
-done
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking if IPv6 support is enabled" >&5
 $as_echo_n "checking if IPv6 support is enabled... " >&6; }
 # Check whether --enable-ipv6 was given.