Compiling ROOT V4.00.08 on Scientific Linux : Pb with cernli

ROOT
1

Compilation of ROOT V4.00.08 fails here :

g++ -O -o bin/h2root main/src/h2root.o hbook/src/hntvar2.o
-Llib -lCore -lCint -lHist -lGraf -lGraf3d -lTree -lMatrix
/usr/remote/prive/cernlib/pro/lib/libpacklib.a /usr/remote/prive/cernlib/pro/lib/libkernlib.a
-lg2c -lnsl -lm -ldl -lpthread -rdynamic
/usr/remote/prive/cernlib/pro/lib/libpacklib.a(error.o)(.text+0x5c5): In function rfio_serror_r': /afs/cern.ch/project/cernlib/i386_redhat61/2001/build/packlib/kernlib/shift/archive/rfio/error.c:151:sys_errlist’ is deprecated; use strerror' orstrerror_r’ instead
/usr/remote/prive/cernlib/pro/lib/libpacklib.a(serror.o)(.text+0x29b): In function sstrerror_r': /afs/cern.ch/project/cernlib/i386_redhat61/2001/build/packlib/kernlib/shift/archive/common/serror.c:419:sys_nerr’ is deprecated; use strerror' orstrerror_r’ instead
/usr/remote/prive/cernlib/pro/lib/libpacklib.a(u64subr.o)(.text+0x2f): In function strtou64': /afs/cern.ch/project/cernlib/i386_redhat61/2001/build/packlib/kernlib/shift/archive/common/u64subr.c:23: undefined reference to__ctype_b’
/usr/remote/prive/cernlib/pro/lib/libpacklib.a(u64subr.o)(.text+0x61):/afs/cern.ch/project/cernlib/i386_redhat61/2001/build/packlib/kernlib/shift/archive/common/u64subr.c:25: undefined reference to __ctype_b' /usr/remote/prive/cernlib/pro/lib/libpacklib.a(u64subr.o)(.text+0x20f): In functionstrutou64’:
/afs/cern.ch/project/cernlib/i386_redhat61/2001/build/packlib/kernlib/shift/archive/common/u64subr.c:73: undefined reference to __ctype_b' /usr/remote/prive/cernlib/pro/lib/libpacklib.a(u64subr.o)(.text+0x241):/afs/cern.ch/project/cernlib/i386_redhat61/2001/build/packlib/kernlib/shift/archive/common/u64subr.c:75: undefined reference to__ctype_b’
collect2: ld returned 1 exit status
make: *** [bin/h2root] Error 1

GCC is SL native (3.2.3).

CERNLIB is 2001. I tried to disable the use of CERNLIB (–disable-cern) but could not.

=> What do I have to do to compile ROOT V4 without CERNLIB ? Then If I want
h2root, which version of cernlib is supported ?

=> By the way, what is the standard way to configure ROOT ? I used to do it with
the script : /afs/cern.ch/alice/library/root/new/cfg.sh
This script creates empty Pyhtia shared libraries… which I do not understand…

Thanks.

2

upgrade to cernlib 2003 or newer

The ROOT install procedure is described at:
root.cern.ch/root/Install.html

Rene

3

Thanks Rene,

Yes ROOT 4.00.08 compiles with cernlib 2003. I had checked the install doc but this
requirement does not show or I missed it.

There is still a problem on Scientific Linux that I never came accross on RedHat 7.3.
It seems that creating an empty libPythia.so does not fool anymore the linker :

g++ -shared -Wl,-soname,libEGPythia.so -O -o lib/libEGPythia.so pythia/src/TMCParticle.o pythia/src/TPythia.o pythia/src/G__Pythia.o -L/scratch/info/build/root_4.00.08-sl302/lib -lPythia
/scratch/info/build/root_4.00.08-sl302/lib/libPythia.so: file not recognized: File truncated
collect2: ld returned 1 exit status
make: *** [lib/libEGPythia.so] Error 1

I am not sure if we need to compile ROOT with Pythia support but the script
/afs/cern.ch/alice/library/root/new/cfg.sh was not causing problems before.

4

Why do you want to create an empty libPythia.so?
You better do not enable Pythia when you run the configure command.

Rene

5

Thanks René,

I was always doing this way because ROOT is for AliRoot and the AliRoot documentation
states that ROOT should be compiled this way :

aliweb.cern.ch/offline/faq_alice … e.html#1.7

The configuation script /afs/cern.ch/alice/library/root/new/cfg.sh looks like this :

#! /bin/sh
command cd $ROOTSYS
if [ ! -d $ROOTSYS/lib ]; then
command mkdir -p $ROOTSYS/lib
fi
command touch lib/libPythia.so lib/libPythia6.so lib/libVenus.so
command ./configure linux --with-shift-libdir=/opt/shift/lib
–with-pythia-libdir=$ROOTSYS/lib
–with-pythia6-libdir=$ROOTSYS/lib
–with-venus-libdir=$ROOTSYS/lib
–with-shift-libdir=/usr/local/lib
–enable-rfio --enable-cern

I have to understand better the relationship between AliRoot/ROOT and Pythia.
The script above was working before I switch for Scientific Linux.

Now the problem is more with AliRoot than with ROOT. Thanks again.

JM Barbet.