Installation Issue - no rule to make target

[Trevor_Russell]

I am installing root on my laptop which runs the latest version of macOS (Big Sur 11.4). I need root for python3 so I am trying to build it and was using the following commands:

git clone GitHub - root-project/root: The official repository for ROOT: analyzing, storing and visualizing big data, scientifically
mkdir build
cd build
cmake …/root
make -j8

cmake didn’t give any warnings but the build failed at 90%. I pasted the last bit of output below

[ 88%] Linking CXX shared library …/…/lib/libMinuit.so

[ 88%] Built target Minuit

[ 88%] Building CXX object net/http/CMakeFiles/RHTTP.dir/src/THttpWSEngine.cxx.o

[ 88%] Building CXX object html/CMakeFiles/Html.dir/src/TDocInfo.cxx.o

make[2]: *** No rule to make target roofit/roofitcore/Minuit2', needed by roofit/roofitcore/G__RooFitCore.cxx’. Stop.

make[1]: *** [roofit/roofitcore/CMakeFiles/G__RooFitCore.dir/all] Error 2

make[1]: *** Waiting for unfinished jobs…

[ 88%] Building CXX object net/http/CMakeFiles/RHTTP.dir/src/THttpWSHandler.cxx.o

[ 88%] Building CXX object html/CMakeFiles/Html.dir/src/TDocOutput.cxx.o

[ 88%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TGeoVolume.cxx.o

[ 88%] Building CXX object net/http/CMakeFiles/RHTTP.dir/src/TRootSniffer.cxx.o

[ 88%] Linking CXX shared library …/…/lib/libPostscript.so

[ 88%] Built target Postscript

[ 88%] Building CXX object html/CMakeFiles/Html.dir/src/TDocParser.cxx.o

[ 88%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TGeoVoxelFinder.cxx.o

[ 90%] Building CXX object html/CMakeFiles/Html.dir/src/THtml.cxx.o

[ 90%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TGeoXtru.cxx.o

[ 90%] Building CXX object net/http/CMakeFiles/RHTTP.dir/src/TRootSnifferStore.cxx.o

[ 90%] Building C object net/http/CMakeFiles/RHTTP.dir/civetweb/civetweb.c.o

[ 90%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TGeoTessellated.cxx.o

[ 90%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TGeoVector3.cxx.o

[ 90%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TVirtualGeoConverter.cxx.o

[ 90%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TVirtualGeoPainter.cxx.o

[ 90%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TVirtualGeoTrack.cxx.o

[ 90%] Building CXX object geom/geom/CMakeFiles/Geom.dir/src/TVirtualMagField.cxx.o

[ 90%] Linking CXX shared library …/lib/libHtml.so

[ 90%] Built target Html

[ 90%] Linking CXX shared library …/…/lib/libGeom.so

[ 90%] Built target Geom

[ 90%] Linking CXX shared library …/…/lib/libRHTTP.so

[ 90%] Built target RHTTP

make: *** [all] Error 2

[jblomer]

While we should be able to make ROOT compile on your Mac, if you don’t need a version compiled from sources it is probably quicker to use a prebuild 6.24 release. We have some instructions on how to install the pre-built binaries.

[Trevor_Russell]

Are those not only compiled for python 2 for macOS?

[jblomer]

Sorry, I overlooked the python3 part. In this case, you can install ROOT from conda or homebrew.