=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Checksum BLAKE2s OK for RE-flex-5.2.2.tar.gz
=> Checksum SHA512 OK for RE-flex-5.2.2.tar.gz
===> Installing dependencies for RE-flex-5.2.2
==========================================================================
The supported build options for RE-flex are:

	cpu-optimization doxygen examples

The currently selected options are:

	examples

You can select which build options to use by setting PKG_DEFAULT_OPTIONS
or the following variable.  Its current value is shown:

	PKG_OPTIONS.RE-flex (not defined)

==========================================================================
=> Tool dependency libtool-base>=2.4.2nb9: NOT found
=> Verifying /nonexistent for ../../devel/libtool-base
make[1]: don't know how to make /nonexistent. Stop

make[1]: stopped in /usr/pkgsrc/devel/libtool-base
*** Error code 2

Stop.
make: stopped in /usr/pkgsrc/devel/RE-flex