gnuradio/cmake "make fake" problems again

I hit this again (after a successful previous build), more information
below in case someone has an idea what might be up.

CMake Error at gnuradio-runtime/lib/cmake_install.cmake:52 (file):
file INSTALL cannot find
"/pobj/gnuradio-3.8.2.0/build-i386/gnuradio-runtime/lib/libgnuradio-runtime.so.3.8.2.0":
No such file or directory.

Diffing with a working build log (+ lines are in the 'fail' log) it
regenerates cmake files during fake-install in the failed one for some
reason..

Tarred up build dir https://junkpile.org/gnuradio-fail.tar.xz
Failed and good build logs attached.

===> comms/gnuradio
===> Faking installation for gnuradio-3.8.2.0
+[0/1] /usr/local/bin/cmake --regenerate-during-build -S/pobj/gnuradio-3.8.2.0/gnuradio-3.8.2.0 -B/pobj/gnuradio-3.8.2.0/build-i386
+Re-run cmake no build system arguments
+-- Build type set to Release.
+--
+-- The build system will automatically enable all components.
+-- Use -DENABLE_DEFAULT=OFF to disable components by default.
+--
+-- Configuring testing-support support...
+-- Enabling testing-support support.
[...]
+-- Using install prefix: /usr/local
+-- Building for version: 3.8.2.0 / 3.8.2
+-- Configuring done
+-- Generating done
+-- Build files have been written to: /pobj/gnuradio-3.8.2.0/build-i386
[0/1] cd /pobj/gnuradio-3.8.2.0/build-i386 && /usr/local/bin/cmake -P cmake_install.cmake
-- Install configuration: "Release"
-- Installing: /pobj/gnuradio-3.8.2.0/fake-i386/usr/local/share/doc/gnuradio/README.md
[...]