installation on mac issue

[olivier]

on this thread: ​https://answers.launchpad.net/mg5amcnlo/+question/696852

Someone reported the following:

Juan Antonio Aguilar Saavedra confirmed that the question is solved:
Dear Olivier, thanks a lot. I managed to compile it but not without some
pain. I list here the errors and fixes, for reference. The first
compilation error I got was

classes/DelphesTF2.cc:35:12: error: no viable overloaded '='

which I solved by inserting

TFormula * fFormula;

on line 35 before

fFormula = new TFormula();

With that fix, compilation continued until the second error:

error: invalid deployment target for -stdlib=libc++ (requires OS X 10.7
or later)

which I solved by writing

export MACOSX_DEPLOYMENT_TARGET=10.15

as suggested by Benj elsewhere. This prompted many warnings but
otherwise the compilation continued. The third error was

validation/DelphesValidation.cpp:1196:17: error: allocation of
incomplete type 'TF1'

which I solved by adding

#include "TF1.h"

to the header in that file. With that, I've been able to pass through
Delphes a test hepmc file. It remains to be checked whether simulated
events are fine, but I guess so.

Best,

Juan Antonio

[shuer]

I have run across the same problem as your on ubuntu 18.04 using python3.8 and c++ 7.5.

I have fixed it as u suggestion. Thanks a lot.

[Pavel Demin]

The fix is in the new release (3.5.0).