Problems trying to compile Delphes

[Alfonso Zerwekh]

Dear Delphes team:
I'm trying to compile Delphes (current version) on Ubuntu 20.04 with gcc 9.3 and root 6.22/06 and I get the following error:

validation/DelphesValidation.cpp: In function ‘std::pair<double, double> GausFit(TH1*)’:
validation/DelphesValidation.cpp:1196:109: error: invalid use of incomplete type ‘class TF1’

1196 | () - 2 * hist->GetRMS(), hist->GetMean() + 2 * hist->GetRMS());

|

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1199:37: error: invalid use of incomplete type ‘class TF1’

1199 | TF1 *f2 = new TF1("f2", "gaus", f1->GetParameter(1) - 2 * f1->GetParameter(2), f1->GetParameter(1) + 2 * f1->GetParameter(2));

| ^~

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1199:63: error: invalid use of incomplete type ‘class TF1’

1199 | TF1 *f2 = new TF1("f2", "gaus", f1->GetParameter(1) - 2 * f1->GetParameter(2), f1->GetParameter(1) + 2 * f1->GetParameter(2));

| ^~

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1199:84: error: invalid use of incomplete type ‘class TF1’

1199 | 2", "gaus", f1->GetParameter(1) - 2 * f1->GetParameter(2), f1->GetParameter(1) + 2 * f1->GetParameter(2));

| ^~

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1199:110: error: invalid use of incomplete type ‘class TF1’

1199 | er(1) - 2 * f1->GetParameter(2), f1->GetParameter(1) + 2 * f1->GetParameter(2));

| ^~

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1199:127: error: invalid use of incomplete type ‘class TF1’

1199 | etParameter(2), f1->GetParameter(1) + 2 * f1->GetParameter(2));

|

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1202:20: error: invalid use of incomplete type ‘class TF1’

1202 | Double_t sig = f2->GetParameter(2);

| ^~

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1203:23: error: invalid use of incomplete type ‘class TF1’

1203 | Double_t sigErr = f2->GetParError(2);

| ^~

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1205:10: warning: possible problem detected in invocation of delete operator: [-Wdelete-incomplete]

1205 | delete f1;

| ^~

validation/DelphesValidation.cpp:1196:8: warning: ‘f1’ has incomplete type

1196 | TF1 *f1 = new TF1("f1", "gaus", hist->GetMean() - 2 * hist->GetRMS(), hist->GetMean() + 2 * hist->GetRMS());

| ^~

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1205:10: note: neither the destructor nor the class-specific operator delete will be called, even if they are declared when the class is defined

1205 | delete f1;

| ^~

validation/DelphesValidation.cpp:1206:10: warning: possible problem detected in invocation of delete operator: [-Wdelete-incomplete]

1206 | delete f2;

| ^~

validation/DelphesValidation.cpp:1199:8: warning: ‘f2’ has incomplete type

1199 | TF1 *f2 = new TF1("f2", "gaus", f1->GetParameter(1) - 2 * f1->GetParameter(2), f1->GetParameter(1) + 2 * f1->GetParameter(2));

| ^~

In file included from validation/DelphesValidation.cpp:32:
/home/alfonso/Apps/root/include/TGraph.h:36:7: note: forward declaration of ‘class TF1’

36 | class TF1;

|

validation/DelphesValidation.cpp:1206:10: note: neither the destructor nor the class-specific operator delete will be called, even if they are declared when the class is defined

1206 | delete f2;

| ^~

validation/DelphesValidation.cpp: In function ‘void DelphesValidation(const char*, const char*, const char*, const char*, const char*, const char*, const char*, const char*, const char*, const char*, const char*)’:
validation/DelphesValidation.cpp:1497:17: warning: unused variable ‘branchParticleBJet’ [-Wunused-variable]

1497 | TClonesArray *branchParticleBJet = treeReaderBJet->UseBranch("Particle");

| ^~

validation/DelphesValidation.cpp:1500:17: warning: unused variable ‘branchParticleCJet’ [-Wunused-variable]

1500 | TClonesArray *branchParticleCJet = treeReaderCJet->UseBranch("Particle");

| ^~

make: * [Makefile:2447: tmp/validation/DelphesValidation.o] Error 1

Any solution ?

Thanks in advance

[Pavel Demin]

This error was already discussed in #1448 and the fix is in the git repository.

Please try the latest version from the following link:

​​​​https://github.com/delphes/delphes/archive/master.zip

[Pavel Demin]

The fix is in the new release (3.5.0).