Buiding QGIS master on MacOS How to build $ brew tap codebutler/brew $ brew install codebutler/brew/gdal $ brew install codebutler/brew/qtkeychain $ brew install bison geos libzip qca python3 pyqt qscintilla2 gsl qwt spatialindex libpq $ pip3 install six $ git clone https://github.com/qgis/QGIS.git $ cd QGIS $ mkdir build-master $ cd build-master $ cmake ../CMakeLists.txt -DBISON_EXECUTABLE=/usr/local/opt/bison/bin -DWITH_QTWEBKIT=false -DCMAKE_PREFIX_PATH=/usr/local/opt/qt $ cd .. $ make Python packages needed at runtime: $ pip3 install psycopg2 $ pip3 install owslib $ pip3 install jinja2 $ pip3 install pygments $ pip3 install gdal $ pip3 install pyyaml $ pip3 install numpy
-DBISON_EXECUTABLE=/usr/local/opt/bison/binneeds to be changed to-DBISON_EXECUTABLE=/usr/local/opt/bison/bin/bison