=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for labltk-8.06.3.tar.gz
=> Checksum RMD160 OK for labltk-8.06.3.tar.gz
=> Checksum SHA512 OK for labltk-8.06.3.tar.gz
===> Installing dependencies for labltk-8.06.3nb5
==========================================================================
The following variables will affect the build process of this package,
labltk-8.06.3nb5.  Their current value is shown below:

        * OCAML_USE_OPT_COMPILER = no

Based on these variables, the following variables have been set:

        * TERMCAP_TYPE = termcap

You may want to abort the process now with CTRL-C and change their value
before continuing.  Be sure to run `/usr/bin/make clean' after
the changes.
==========================================================================
=> Tool dependency gmake>=3.81: found gmake-4.2.1nb1
=> Build dependency x11-links>=1.19: found x11-links-1.19
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency ocaml-findlib>=1.8.0nb5: found ocaml-findlib-1.8.0nb5
=> Full dependency ocaml>=4.07.1nb3: found ocaml-4.07.1nb3
=> Full dependency tk>=8.6.8nb1: found tk-8.6.9.1
===> Overriding tools for labltk-8.06.3nb5
===> Extracting for labltk-8.06.3nb5
===> Patching for labltk-8.06.3nb5
=> Applying pkgsrc patches for labltk-8.06.3nb5
===> Creating toolchain wrappers for labltk-8.06.3nb5
===> Configuring for labltk-8.06.3nb5
Configuring LablTk...
tcl.h and/or tk.h not found.
Tcl library not found.
test: no: unexpected operator
test: no: unexpected operator
test: no: unexpected operator
test: no: unexpected operator
Tcl library found.
[WARNING] Tk library not found.

** Configuration summary **

The "labltk" library: not supported