PYTHIA 8 for ROOT

Newbie
21

I sent the command that you suggest:
after configure the terminal says:
WARNING: Disabling ROOT - header TROOT.h missing.
WARNING: Disabling ROOT - library Core missing.
WARNING: Disabling ROOT - library Gpad missing.
WARNING: Disabling ROOT - library Graf missing.
WARNING: Disabling ROOT - library Hist missing.
WARNING: Disabling ROOT - library MathCore missing.
WARNING: Disabling ROOT - library Matrix missing.
WARNING: Disabling ROOT - library Thread missing.
WARNING: Disabling ROOT - library Tree missing.

now the problem relative to

WARNING: Disabling ROOT - binary root-config missing

disappear.

22

What do you get from:

source /full/path/to/your/ROOT/bin/thisroot.sh
root-config --prefix
root-config --bindir
23

source /full/path/to/your/ROOT/bin/thisroot.sh

nothing

root-config --prefix

/Users/Michele/root/sw/osx_x86-64/ROOT/v6-14-04-1

root-config --incdir

/Users/Michele/root/sw/osx_x86-64/ROOT/v6-14-04-1/include

24

So try (assuming that “/Users/Michele/root/sw/osx_x86-64/ROOT/v6-14-04-1/bin/root-config” exists):

./configure --enable-shared --with-root=/Users/Michele/root/sw/osx_x86-64/ROOT/v6-14-04-1
25

after

./configure --enable-shared --with-root=/Users/Michele/root/sw/osx_x86-64/ROOT/v6-14-04-1

the therminal says:

Running PYTHIA configuration script. Now is Lun 24 Feb 2020 20:05:31 CET
WARNING: setting default C++ compiler CXX=g++ (CXX environment variable not set)

PYTHIA Configuration Summary
Architecture = DARWIN
C++ Compiler CXX = g++
C++ Flags CXX_COMMON = -O2 -pedantic -W -Wall -Wshadow -fPIC
C++ Flags (.so) CXX_SHARED = -dynamiclib
Further options = --enable-shared

The following optional external packages will be used:

  • ROOT (in /Users/Michele/root/sw/osx_x86-64/ROOT/v6-14-04-1/lib)

so I launch the command make.
Pythia now is correctly installed but when I do:

make main91

the therminal says:

g++ main91.cc -o main91 -w -I -I…/include -O2 -pedantic -W -Wall -Wshadow -fPIC -L…/lib -Wl,-rpath,…/lib -lpythia8 -ldl \

root-config --cflags\

-Wl,-rpath, /Users/Michele/root/sw/osx_x86-64/ROOT/v6-14-04-1/binroot-config --glibs

bash: /Users/Michele/root/sw/osx_x86-64/ROOT/v6-14-04-1/binroot-config: No such file or directory

main91.cc:15:10: fatal error: ‘Pythia8/Pythia.h’ file not found

#include “Pythia8/Pythia.h”

^~~~~~~~~~~~~~~~~~

1 error generated.

Basically this is the problem that I encountered from yesterday

26

Fix the “examples/Makefile”:

main91: $$@.cc $(PREFIX_LIB)/libpythia8.a
ifeq ($(ROOT_USE),true)
	$(CXX) $< -o $@ -w $(CXX_COMMON) \
	`$(ROOT_BIN)/root-config --cflags` \
	-Wl,-rpath,`$(ROOT_BIN)/root-config --libdir` `$(ROOT_BIN)/root-config --glibs`
else
	@echo "Error: $@ requires ROOT"
endif
27

I do it, but the error remain the same

28

Make sure that you modified the “examples/Makefile” EXACTLY like shown in my previous post above.

29

Sorry, now I change it correctly. Now the .exe is produced but when

./main91

the terminal says

PYTHIA Error: settings file /xmldoc/Index.xml not found
PYTHIA Abort from Pythia::Pythia: settings unavailable
PYTHIA Abort from Pythia::init: constructor initialization failed
PYTHIA Error in Settings::flag: unknown key Stat:showProcessLevel
Info in TCanvas::MakeDefCanvas: created default TCanvas with name c1

and the Canvas is blank

30

You can try to:

export PYTHIA8DATA=/full/path/to/your/share/Pythia8/xmldoc
31

I launch the command while I was in PYTHIA directory, correct?
In this condition I launch your command, ./configure once again, make once again.
The erro for main91 is the same

32

Why don’t you read the Pythia 8 “README” file?

33

thank you very much for your help.