-`-DWITH_QT4=1` Force compilation to use Qt4 instead of Qt5.
-`-DWITH_QT4=1` Force compilation to use Qt4 instead of Qt5 (default 0 = no).
-`-DCMAKE_BUILD_TYPE=Debug` Compile in debug mode. Enables extra logging output, debug symbols, and much more verbose compiler warnings.
-`-DCMAKE_BUILD_TYPE=Debug` Compile in debug mode. Enables extra logging output, debug symbols, and much more verbose compiler warnings (default `Release`).
-`-DUPDATE_TRANSLATIONS=1` Configure `make` to update the translation .ts files for new strings in the source code. Note: Running `make clean` will remove the .ts files.
-`-DUPDATE_TRANSLATIONS=1` Configure `make` to update the translation .ts files for new strings in the source code. Note: Running `make clean` will remove the .ts files (default 0 = no).
-`-DTEST=1` Enable regression tests (default 0 = no). Note: needs googletest, will be downloaded on the fly if unavailable. To run tests: ```make test```.