The following steps should enable you to build the installation bundle which is described as the hybrid approach here.

cd ~/Recoll
git clone https://framagit.org/medoc92/recoll
git clone https://framagit.org/medoc92/recoll-antiword antiword
 cd antiword
 make -f Makefile.Linux
 cd ../xapian-core-1.4.18
 ./configure --disable-shared
 make
cd ~/Recoll/recoll
cp src/common/autoconfig-mac.h to src/common/autoconfig.h
src/windows/qmkrecoll/librecoll.pro
src/windows/qmkrecoll/recollindex.pro
src/windows/qmkrecoll/recollq.prod
src/qtgui/recoll-win.pro

You need to build librecoll.pro first, then the rest.

This should give you a .dmg