Error during building custom image

Used this manual for building latest OpenWRT version

Fedora 32 latest update. All rpm dependencies from this link for Fedora 30 is resolved (i think).

Cannot resolve this issue. Any ideas? Thx for reading this post!

CFLAGS="-O2 -I/home/rootware/openwrt/staging_dir/host/include " CPPFLAGS="-I/home/rootware/openwrt/staging_dir/host/include " CXXFLAGS="" LDFLAGS="-L/home/rootware/openwrt/staging_dir/host/lib " make  -C /home/rootware/openwrt/build_dir/host/flex-2.6.4  
make[4]: Entering directory '/home/rootware/openwrt/build_dir/host/flex-2.6.4'
Making all in src
make[5]: Entering directory '/home/rootware/openwrt/build_dir/host/flex-2.6.4/src'
make  all-am
make[6]: Entering directory '/home/rootware/openwrt/build_dir/host/flex-2.6.4/src'
depbase=`echo libmain.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
/usr/bin/env bash ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I.  -DLOCALEDIR=\"/home/rootware/openwrt/staging_dir/host/share/locale\" -I/home/rootware/openwrt/staging_dir/host/include   -O2 -I/home/rootware/openwrt/staging_dir/host/include  -MT libmain.lo -MD -MP -MF $depbase.Tpo -c -o libmain.lo libmain.c &&\
mv -f $depbase.Tpo $depbase.Plo
**libtool: Version mismatch error.  This is libtool 2.4.6 Debian-2.4.6-0.1, but the**
**libtool: definition of this LT_INIT comes from libtool 2.4.**
**libtool: You should recreate aclocal.m4 with macros from libtool 2.4.6 Debian-2.4.6-0.1**
**libtool: and run autoconf again.**
**make[6]: *** [Makefile:794: libmain.lo] Error 63**
make[6]: Leaving directory '/home/rootware/openwrt/build_dir/host/flex-2.6.4/src'
make[5]: *** [Makefile:539: all] Error 2

seems relevant... poke around the fedora support channels re: downgrading libtool maybe?

No version for downgrading via dnf...

Update package has no result.

Any other ideas?

What is the full output of make tools/flex/{clean,compile} V=sc ?

Full log file avaible on this link log.txt