WHIZARD

Two errors: make libtool error unrecognised option '-c' and File "command line", line 1: Error: Unbound module Stdlib

Asked by Alexander Schuy

Hi,

I'm trying to install Whizard on lxplus, and I ran into some issue with compilation. I'm attempting to install version 3.0.3 http://whizard.hepforge.org/whizard-3.0.3.tar.gz and before installation, I setup the LCG_101 x86_64-centos7-gcc8-opt environment. Whizard reports the following configuration:

**************************************************************
--------------------------------------------------------------
--- WHIZARD CONFIGURATION SUMMARY ---
**************************************************************
Package name: WHIZARD
Version: 3.0.3
Date: Apr 06 2022
Status: release
**************************************************************
--- Compilers ---
--------------------------------------------------------------
Fortran compiler: --- gfortran ---
         Version: --- 8.3.0 ---
           Flags: --- -g -O2 ---
 float precision: --- double ---
  debug features: --- off ---
          OpenMP: --- off ---
             MPI: --- off ---
--------------------------------------------------------------
  OCaml compiler: --- /cvmfs/sft.cern.ch/lcg/views/LCG_101/x86_64-centos7-gcc8-opt/bin/ocamlopt.opt ---
         Version: --- 4.12.0 ---
           Flags: --- ---
--------------------------------------------------------------
    C++ compiler: --- /cvmfs/sft.cern.ch/lcg/releases/gcc/8.3.0-cebb0/x86_64-centos7/bin/g++ --- [interfaces only]
           Flags: --- -g -O2 ---
--------------------------------------------------------------
 Python compiler: --- /cvmfs/sft.cern.ch/lcg/views/LCG_101/x86_64-centos7-gcc8-opt/bin/python --- [interfaces only]
         Version: --- 3.9 ---
 WhiPy interface: --- yes ---
**************************************************************
--- Internal and shipped packages ---
--------------------------------------------------------------
VAMP (multi-channel adapative integrator) : yes, v3.0.3
O'Mega (matrix element generator) : yes, v3.0.3
CIRCE1 (lepton beam spectra, parameterized): yes, v3.0.3
CIRCE2 (lepton beam spectra, sampled) : yes, v3.0.3
    incl. tools for generating new spectra : yes
--------------------------------------------------------------
PYTHIA6 (parton showering & hadronization) : yes, v6.427
        (settings for eh collisions) : no
TAUOLA (tau decays) : yes
StdHEP (event format) : yes, v5.06.01
--------------------------------------------------------------
--- External packages ---
--------------------------------------------------------------
HepMC (event format): yes, v3.02.04
HDF5 (binary format): yes, v1.10.6
LCIO (event format) : yes, v2.16.1
LHAPDF (PDF sets) : no
HOPPET (PDF match.) : no
FastJet (clustering): no
PYTHIA8 (QCD) : no
GoSam (OLP) : no
OpenLoops (OLP) : no
RECOLA (OLP) : no
LoopTools : no
--------------------------------------------------------------

 After running `make` there is the following message:

Making all in circe1
make[1]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1'
Making all in src
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/src'
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/src'
Making all in minuit
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/minuit'
  F77 minuit.lo
Usage: /afs/cern.ch/user/a/aschuy/work/private/VBS_WGamma/muon_collider/event-generation/whizard_build/libtool [OPTION]... [MODE-ARG]...
Try 'libtool --help' for more information.
libtool: error: unrecognised option: '-c'
make[2]: *** [minuit.lo] Error 1
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/minuit'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1'
make: *** [all-recursive] Error 1

Any help would be appreciated, thanks!

Question information

Language:
English Edit question
Status:
Solved
For:
WHIZARD Edit question
Assignee:
Juergen Reuter Edit question
Last query:
Last reply:
Revision history for this message
Juergen Reuter (j.r.reuter) said (last edit ): 		#1

Hi Alexander,
this looks like that the first thing happening is compiling the old minuit code in CIRCE1, using F77, but then the F77 variable seems to be empty, such that the employed command
libtool F77 -c .....
which normally should translate into
libtool gfortran -c ....
is translated into
libtool -c ....
and libtool now complains about the unrecognized option -c (intended for the Fortran compiler).
In your configure step, could you set the F77 compiler explicitly, like
./configure FC=<your gfortran> F77=<your gfortran> .....
please?
If that doesn't solve the problem, I will try to reproduce it on our DESY CentOS-7 machines.
Cheers,
    JRR (Juergen Reuter)

Revision history for this message
Alexander Schuy (schuya) said : 		#2

Thanks for the quick response! After modifying ./configure as per your suggestion, there is now the following log:

Making all in circe1
make[1]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1'
Making all in src
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/src'
  FC kinds.lo
  FC circe1.lo
  FCLD libcirce1.la
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/src'
Making all in minuit
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/minuit'
  F77 minuit.lo
  F77 mncomd.lo
  F77 mndxdi.lo
  F77 mnexin.lo
  F77 mnhess.lo
  F77 mnlims.lo
  F77 mnparm.lo
  F77 mnprin.lo
  F77 mnsave.lo
  F77 mnstat.lo
  F77 mnwarn.lo
  F77 mnamin.lo
  F77 mncont.lo
  F77 mneig.lo
  F77 mnfixp.lo
  F77 mnimpr.lo
  F77 mnline.lo
  F77 mnpars.lo
  F77 mnpsdf.lo
  F77 mnscan.lo
  F77 mnstin.lo
  F77 mnwerr.lo
  F77 mnbins.lo
  F77 mncrck.lo
  F77 mnemat.lo
  F77 mnfree.lo
  F77 mninex.lo
  F77 mnmatu.lo
  F77 mnpfit.lo
  F77 mnrazz.lo
  F77 mnseek.lo
  F77 mntiny.lo
  F77 stand.lo
  F77 mncalf.lo
  F77 mncros.lo
  F77 mnerrs.lo
  F77 mngrad.lo
  F77 mninit.lo
  F77 mnmigr.lo
  F77 mnpint.lo
  F77 mnread.lo
  F77 mnset.lo
  F77 mnunpt.lo
  F77 mncler.lo
  F77 mncuve.lo
  F77 mneval.lo
  F77 mnhelp.lo
  F77 mninpu.lo
  F77 mnmnos.lo
  F77 mnplot.lo
  F77 mnrn15.lo
  F77 mnseti.lo
  F77 mnvers.lo
  F77 mncntr.lo
  F77 mnderi.lo
  F77 mnexcm.lo
  F77 mnhes1.lo
  F77 mnintr.lo
  F77 mnmnot.lo
  F77 mnpout.lo
  F77 mnrset.lo
  F77 mnsimp.lo
  F77 mnvert.lo
  CC intrac.lo
  F77LD libminuit.la
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/minuit'
Making all in tools
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/tools'
Makefile:1121: Makefile.depend: No such file or directory
for src in ../../../whizard-3.0.3/circe1/tools/circe1_plot.f90 ../../../whizard-3.0.3/circe1/tools/circe1_fit.f90 ../../../whizard-3.0.3/circe1/tools/circe1_sample.f90 ../../../whizard-3.0.3/circe1/tools/circe1_int.f90; do \
          module="`basename $src | sed 's/\.f90//'`"; \
  grep '^ *use ' $src \
    | grep -v '!NODEP!' \
    | sed -e 's/^ *use */'$module'.lo: /' \
          -e 's/, *only:.*//' \
          -e 's/, *&//' \
          -e 's/, *.*=>.*//' \
          -e 's/ *$/.lo/' \
                          ; \
done > Makefile.depend
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/tools'
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/tools'
  FC circe1_plot.o
  FCLD circe1_plot
  FC circe1_fit.o
  FCLD circe1_fit
  FC circe1_sample.o
  FCLD circe1_sample
  FC circe1_minuit1.o
  FCLD circe1_minuit1
  FC circe1_minuit2.o
  FCLD circe1_minuit2
  FC circe1_int.o
  FCLD circe1_int
/usr/bin/sed 's|@name@|circe1_fit|g' ../../../whizard-3.0.3/circe1/tools/circe1_fit.sh >circe1_fit.run
chmod +x circe1_fit.run
/usr/bin/sed 's|@name@|circe1_minuit1|g' ../../../whizard-3.0.3/circe1/tools/circe1_minuit1.sh >circe1_minuit1.run
chmod +x circe1_minuit1.run
/usr/bin/sed 's|@name@|circe1_minuit2|g' ../../../whizard-3.0.3/circe1/tools/circe1_minuit2.sh >circe1_minuit2.run
chmod +x circe1_minuit2.run
/usr/bin/sed 's|@name@|circe1_int|g' ../../../whizard-3.0.3/circe1/tools/circe1_int.sh >circe1_int.run
chmod +x circe1_int.run
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/tools'
Making all in share
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/share'
Making all in doc
make[3]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/share/doc'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/share/doc'
Making all in data
make[3]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/share/data'
make[3]: Nothing to be done for `all'.
make[3]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/share/data'
make[3]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/share'
make[3]: Nothing to be done for `all-am'.
make[3]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/share'
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1/share'
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1'
make[2]: Nothing to be done for `all-am'.
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1'
make[1]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe1'
Making all in circe2
make[1]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe2'
Making all in src
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe2/src'
Makefile:1374: Makefile.depend: No such file or directory
Makefile:1396: Makefile.depend_ocaml: No such file or directory
  OCAMLDEP Makefile.depend_ocaml
echo parser.mli: parser.ml >>Makefile.depend_ocaml
echo lexer.cmi: parser.cmi >>Makefile.depend_ocaml
echo parser.cmi: syntax.cmi >>Makefile.depend_ocaml
echo commands.cmi: parser.cmi lexer.cmi >>Makefile.depend_ocaml
echo commands.cmo: parser.cmi lexer.cmi >>Makefile.depend_ocaml
echo commands.cmx: parser.cmx lexer.cmx >>Makefile.depend_ocaml
echo lexer.cmo: lexer.cmi >>Makefile.depend_ocaml
echo lexer.cmx: lexer.cmi parser.cmx >>Makefile.depend_ocaml
echo parser.cmo: parser.cmi syntax.cmi >>Makefile.depend_ocaml
echo parser.cmx: parser.cmi syntax.cmi syntax.cmx >>Makefile.depend_ocaml
echo events_lexer.cmo: events_lexer.cmi >>Makefile.depend_ocaml
echo events_lexer.cmx: events_lexer.cmi >>Makefile.depend_ocaml
for src in ../../../whizard-3.0.3/circe2/src/circe2.f90 ../../../whizard-3.0.3/circe2/src/tao_random_numbers.f90 ../../../whizard-3.0.3/circe2/src/tao_random_objects.f90 ../../../whizard-3.0.3/circe2/src/circe2_moments.f90 ../../../whizard-3.0.3/circe2/src/circe2_ls.f90 ../../../whizard-3.0.3/circe2/src/circe2_generate.f90; do \
          module="`basename $src | sed 's/\.f90//'`"; \
  grep '^ *use ' $src \
    | grep -v '!NODEP!' \
    | sed -e 's/^ *use */'$module'.lo: /' \
          -e 's/, *only:.*//' \
          -e 's/, *&//' \
          -e 's/, *.*=>.*//' \
          -e 's/ *$/.lo/'; \
  grep '^ *use ' $src \
    | grep -v '!NODEP!' \
    | sed -e 's/^ *use */'$module'.lo: /' \
          -e 's/, *only:.*//' \
          -e 's/, *&//' \
          -e 's/, *.*=>.*//' \
          -e 's/ *$/.$(FCMOD)/'; \
done > Makefile.depend
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe2/src'
make[2]: Entering directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe2/src'
  FC kinds.lo
  FC circe2.lo
  FC tao_random_numbers.lo
  FC tao_random_objects.lo
  FC circe2_moments.o
  FCLD libcirce2.la
  FCLD libtaorng_objs.la
  FCLD libtaorng.la
  FCLD circe2_moments
  FC circe2_ls.o
  FCLD circe2_ls
  FC circe2_generate.o
  FCLD circe2_generate
  OCAMLC OUnit.cmi
File "command line", line 1:
Error: Unbound module Stdlib
make[2]: *** [OUnit.cmi] Error 2
make[2]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe2/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/circe2'
make: *** [all-recursive] Error 1

Revision history for this message
Juergen Reuter (j.r.reuter) said : 		#3

Dear Alexander,
that is an additional issue, independent of the previous one. It looks like there is a conflict between two different versions of the OCaml compiler for our matrix element generator. Your configure summary in your first post above shows that Whizard is using the OCaml v4.12 from /cvmfs/sft.cern.ch/lcg/views/LCG_101/x86_64-centos7-gcc8-opt/bin/ocamlopt
but when actually compiling, it takes ocamlc I assume from your local node, /usr/bin/ocamlc, so the native one from your CentOS 7 which is v4.05. The name of the standard library changed between the two from Pervasives to Stdlib which creates the error message. You could see what is used in the Makefile in your build directory
/afs/cern.ch/work/a/aschuy/private/VBS_WGamma/muon_collider/event-generation/whizard_build/Makefile
OCAML = /usr/bin/ocaml
OCAMLBEST = opt
OCAMLBUILD = no
OCAMLC = /usr/bin/ocamlc.opt
OCAMLCDOTOPT = /usr/bin/ocamlc.opt
OCAMLCP = /usr/bin/ocamlcp
OCAMLDEFUN = no
OCAMLDEP = /usr/bin/ocamldep
OCAMLDOC = /usr/bin/ocamldoc
OCAMLDOT = no
OCAMLFLAGS =
OCAMLINTEGERVERSION = 405000
OCAMLLEX = /usr/bin/ocamllex.opt
OCAMLLEXDOTOPT = /usr/bin/ocamllex.opt
OCAMLLIB = /usr/lib/ocaml
OCAMLMKLIB = /usr/bin/ocamlmklib
OCAMLMKTOP = /usr/bin/ocamlmktop
OCAMLOPT = /usr/bin/ocamlopt.opt
OCAMLOPTDOTOPT = /usr/bin/ocamlopt.opt
OCAMLVERSION = 4.05.0
OCAMLWEB = /usr/bin/ocamlweb
OCAMLWEBVERSION =
OCAMLYACC = /usr/bin/ocamlyacc
OCAML_BIGARRAY_CMA = bigarray.cma
OCAML_BIGARRAY_CMXA = bigarray.cmxa
OCAML_BIGARRAY_COMPAT = bigarray_library
I suppose there is a mixture in your case between /usr/lib /usr/bin and
/cvmfs/sft.cern.ch/lcg/views/LCG_101/x86_64-centos7-gcc8-opt/bin/
My guess is that either
(1) the installation on your local centos7 machine is incomplete, the one on cvmfs I can access and it looks fully functional
or
(2)
you changed your environmental variables between configuration and building/making.
Could you please check this?
Cheers,
    JRR

Revision history for this message
Aram Apyan (arapyan) said : 		#4

Hi Juergen,

Alex and I are looking at this together but just to answer your question, I don't think there is a mixture in versions? If I check my MakeFile I do see that it points to the OCAML version from /cvfms/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocaml (*)

Alex and I are using different LCG versions but we get the same error.

Thanks,

Aram

(*)
OCAML = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocaml
OCAMLBEST = opt
OCAMLBUILD = no
OCAMLC = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamlc.opt
OCAMLCDOTOPT = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamlc.opt
OCAMLCP = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamlcp
OCAMLDEFUN = no
OCAMLDEP = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamldep
OCAMLDOC = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamldoc
OCAMLDOT = no
OCAMLFLAGS =
OCAMLINTEGERVERSION = 410000
OCAMLLEX = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamllex.opt
OCAMLLEXDOTOPT = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamllex.opt
OCAMLLIB = /workspace/install/97a_FCC_1/ocaml/4.10.0/x86_64-centos7-gcc8-opt/lib/ocaml
OCAMLMKLIB = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamlmklib
OCAMLMKTOP = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamlmktop
OCAMLOPT = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamlopt.opt
OCAMLOPTDOTOPT = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamlopt.opt
OCAMLVERSION = 4.10.0
OCAMLWEB = no
OCAMLWEBVERSION =
OCAMLYACC = /cvmfs/sft.cern.ch/lcg/views/LCG_99/x86_64-centos7-gcc8-opt/bin/ocamlyacc
OCAML_BIGARRAY_CMA =
OCAML_BIGARRAY_CMXA =
OCAML_BIGARRAY_COMPAT = bigarray_module

Revision history for this message
Juergen Reuter (j.r.reuter) said : 		#5

Indeed, using the OCaml installation from cvmfs (mounted to DESY, running on a DESY cluster, I can reproduce your problem). But to me this looks like all these ocaml installations are either broken, or there is some directory not being properly mounted. If I do:
$ /cvmfs/sft.cern.ch/lcg/views/LCG_101/x86_64-centos7-gcc8-opt/bin/ocamlc -config
version: 4.12.0
standard_library_default: /build/jenkins/workspace/lcg_release_pipeline/install/ocaml/4.12.0/x86_64-centos7-gcc8-opt/lib/ocaml
standard_library: /build/jenkins/workspace/lcg_release_pipeline/install/ocaml/4.12.0/x86_64-centos7-gcc8-opt/lib/ocaml
ccomp_type: cc
c_compiler: /cvmfs/sft.cern.ch/lcg/releases/gcc/8.3.0-cebb0/x86_64-centos7/bin/gcc
ocamlc_cflags: -O2 -fno-strict-aliasing -fwrapv -fPIC
ocamlc_cppflags: -D_FILE_OFFSET_BITS=64 -D_REENTRANT
ocamlopt_cflags: -O2 -fno-strict-aliasing -fwrapv -fPIC
ocamlopt_cppflags: -D_FILE_OFFSET_BITS=64 -D_REENTRANT

So, this OCaml binary expects the Standard library (Stdlib) in
/build/jenkins/workspace/lcg_release_pipeline/install/ocaml/4.12.0/x86_64-centos7-gcc8-opt/lib/ocaml
which is not mounted/accessible, at least to me.
Either you
(1) need to be able to access this directory
or
(2) need to tell the software people at CERN that the OCaml compiler has been wrongly installed, and they should correct the installation.
Best,
    JRR

Revision history for this message
Aram Apyan (arapyan) said : 		#6

Thanks for checking Juergen. At the end I installed a local version of OCaml and used that version for the whizard installation and it worked. From my side this is resolved.

Best,

Aram

Revision history for this message
Juergen Reuter (j.r.reuter) said : 		#7

Thanks, Aram. Great that you found a working solution. The problem has been reported to the maintainers of the LCG software stacks:
https://sft.its.cern.ch/jira/browse/SPI-2187

In case, this also works for Alexander, could we mark this as (re)solved?
Cheers,
    JRR

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Juergen Reuter (j.r.reuter) said : 		#8

The CERN LCG team suggested that exporting the OCAMLLIB in your environment settings will solve the problem:
export OCAMLLIB=/cvmfs/sft.cern.ch/lcg/views/LCG_101/x86_64-centos7-gcc8-opt/lib/ocaml

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Juergen Reuter (j.r.reuter) said : 		#9

I think we can declare this question as solved. In case there are some direct issues, reopen, otherwise please open a new question.