AddExec in compiled code (static doesn't help)

[alexander.tuna]

Hi. I’m trying to implement an AddExec in a class, which will create a TCanvas and do things when the mouse does things. For reasons I don’t understand, this doesn’t work, despite seeing many posts about making AddExec work in compiled code. I receive errors like:

$ ./script.x
[ canvas pops up ]
[ I move the mouse over the canvas ]
input_line_35:2:2: error: 'MyClass' is not a class, namespace, or enumeration
 MyClass::MouseEvent()

I put instructions for a MWE below. Any suggestions would be appreciated!

script:
http://www.cern.ch/tuna/mwe/script.C

include:
http://www.cern.ch/tuna/mwe/MyClass.hh

compile:
g++ -I. -fPIC -Wall -O3 -g -std=c++11 -m64 -I/usr/local/Cellar/root/6.12.04/include/root -o script.x -L/usr/local/Cellar/root/6.12.04/lib/root -lGui -lCore -lImt -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree -lTreePlayer -lRint -lPostscript -lMatrix -lPhysics -lMathCore -lThread -lMultiProc -lpthread -lm -ldl script.C

run:
./script.x

[couet]

I seems find in ROOT:

$ root 
   ------------------------------------------------------------
  | Welcome to ROOT 6.15/01                  https://root.cern |
  |                               (c) 1995-2018, The ROOT Team |
  | Built for macosx64 on Sep 26 2018, 10:01:38                |
  | From heads/master@v6-13-04-1416-gacc3fcb985                |
  | Try '.help', '.demo', '.license', '.credits', '.quit'/'.q' |
   ------------------------------------------------------------

root [0] .L MyClass.C 
root [1]  auto obj = new MyClass();
root [2]   obj->Run();
root [3] MouseEvent
MouseEvent
MouseEvent
MouseEvent
MouseEvent
MouseEvent

[alexander.tuna]

Hi @couet. That works for me, too. Any idea why this doesn’t run from the command line?

My original errors were found on OSX, but I just tried running also on CentOS and find the same error.

[couet]

May be @pcanal would know. What you do seems correct …

[pcanal]

@alexander.tuna

That works for me, too. Any idea why this doesn’t run from the command line?

Most likely because that version does not ‘teach’ Cling about MyClass (for which you would either need to generate a dictionary via rootcling or genreflex) or at least ask cling to load the header

gInterpreter->Declare("#include \"MyClass.hh\"");

Cheers,
Philippe.

[alexander.tuna]

Thanks @pcanal. That works.