Homebrew and TUnfold how to?

as5365 · April 28, 2026, 11:29am

Hello,

I’m using root through a homebrew installation. Everything works fine but I just tried to run one of the TUnfold tutorial and I got:
fatal error: ‘TUnfoldDensity.h’ file not found

Any idea how to fix it or do I have to drop homebrew and install root from source?

Thanks for any suggestion

Attilio

bellenot · April 28, 2026, 11:32am

Maybe @couet can give some hints

couet · April 28, 2026, 11:41am

I think @moneta might know better.

Wile_E_Coyote · April 28, 2026, 1:08pm

Try (returns “yes” or “no”): root-config --has-unfold

as5365 · April 28, 2026, 4:16pm

I returns no

Attilio

Wile_E_Coyote · April 28, 2026, 4:50pm

So, you either build ROOT from source (with “-Dunfold=ON”), or you try to compile/add: the latest “standalone” TUnfold_V17.9 release

For the latter, you will probably also need this:

Note: in any case, it needs that: root-config --has-xml