Debug root script called with arguments

ROOT
1

In Debug root script
it was found that a root script can be debugged by calling it with ++g.

root -l script.cc++g

How to format this command if I call the root script with arguments (Start root with a root file and script ):

root -l 'script.cc("opt1", "opt2")'

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ROOT Version: Not Provided
Platform: Not Provided
Compiler: Not Provided

2

root.exe -l 'script.cc++g("opt1", "opt2")'

3

Is it important to add .exe?
I work in Linux

4

When I call the script like that root does not recognise itself, e.g.

use of undeclared identifier 'TFile'

5

“root.exe” is the real executable which you want to debug (“root” is just a superfluous driver on top of it).

You seem to be missing: #include "TFile.h"

6

But normally it is not necessary to provide the #include's for root classes in root scripts. Where is the difference?

7

compiler versus interpreter

8

This time the script will be compiled rather than interpreted?

9

You explicitly ask for it using “++g” (as you want to debug it).

10

Then there is an incompatibility with such statements:

R__ADD_INCLUDE_PATH($CUSTOMLIB/interface)
#include "ClassInCustomLib.hh"

The error is:

fatal error: ClassInCustomLib.hh: No such file or directory
 #include "ClassInCustomLib.hh"
                                     ^
compilation terminated.

What to do?

11

This is a known deficiency which nobody cares about: JIRA -> ROOT -> ROOT-10104

Create a simple “rootlogon.C” file (in the current working directory):

{
  if (gSystem->Getenv("CUSTOMLIB")) {
    gInterpreter->AddIncludePath(gSystem->ExpandPathName("${CUSTOMLIB}/interface"));
  }
}
12

How do I accomodate this line:

R__ADD_LIBRARY_PATH($CUSTOMLIB/lib)

I see a lot of errors like this:

script_cc_ACLiC_dict.cxx:(.text+0x1ebf): undefined reference to somefunction(TH1*)'

and

(.text+0x20): undefined reference to main’`

Does it mean I should rename int script() to int main()?

13

In the “rootlogon.C” file, add:

    gSystem->AddDynamicPath(gSystem->ExpandPathName("${CUSTOMLIB}/lib"));
14

What to do for this line:

R__LOAD_LIBRARY(libCustomLib.so)

15 
{ // rootlogon.C
  if (gSystem->Getenv("CUSTOMLIB")) {
    gInterpreter->AddIncludePath(gSystem->ExpandPathName("${CUSTOMLIB}/interface"));
    gSystem->AddDynamicPath(gSystem->ExpandPathName("${CUSTOMLIB}/lib"));
    gSystem->Load("libCustomLib");
  }
}
16

Does gSystem have an equivalent of echo $LD_LIBRARY_PATH?

17

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