I use clang for mg5amcnlo.
I have added :
export CFLAGS="-O -stdlib=libstdc++ -mmacosx-version-min=10.6 -Qunused-arguments"
before installing the pdf but I got the same error.

Cheers,

Celine
________________________________________
From: <email address hidden> [<email address hidden>] on behalf of marco zaro [<email address hidden>]
Sent: Friday, September 12, 2014 2:31 PM
To: DEGRANDE C.
Subject: Re: [Bug 1368721] [NEW] lhapdf error on mac ld: symbol(s) not found for architecture x86_64 collect2: error: ld returned 1 exit status

please check the syntax, i’m not sure if CFLAGS is the correct variable…

On 12 Sep 2014, at 15:30, Marco Zaro <email address hidden> wrote:

> wait
> so if you specify clang for lhapdf AND use clang as cpp compiler in amcatnlo, i think you should also specify
> CFLAGS="-O -stdlib=libstdc++ -mmacosx-version-min=10.6"
> when you configue…
>
> otherwise, if yo also have the gnu compilers (g++ and gcc) and compile lhapdf with it, you should also specify the same compiler for amcatnlo…
> let me know,
>
> Marco
>
>
> On 12 Sep 2014, at 15:18, celine degrande <email address hidden> wrote:
>
>> I try with and without specifying compiler in the configuration for the
>> lhapdf. I use clang for the case where I put it explicitly
>>
>> Cheers,
>>
>> Celine
>> ________________________________________
>> From: <email address hidden> [<email address hidden>] on behalf of marco zaro [<email address hidden>]
>> Sent: Friday, September 12, 2014 2:07 PM
>> To: DEGRANDE C.
>> Subject: Re: [Bug 1368721] [NEW] lhapdf error on mac ld: symbol(s) not found for architecture x86_64 collect2: error: ld returned 1 exit status
>>
>> mmm
>> did you specify the correct c compiler when you compiled lhapdf?
>> it may be a compiler clash…
>> Cheers,
>>
>> Marco
>>
>>
>> On 12 Sep 2014, at 15:00, celine degrande <email address hidden> wrote:
>>
>>> Hi Marco,
>>>
>>> I just try t t~ LO in the sm at the end with version 2.2.0 of MG.
>>>
>>> it on my mac version 10.9.4.
>>> The version for clang is
>>> Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
>>> Target: x86_64-apple-darwin13.3.0
>>> Thread model: posix
>>> I got gcc 4.9.0
>>>
>>> Do you need something else?
>>>
>>> The error is :
>>>
>>> INFO: NNPDF23_nlo_as_0119.LHgrid successfully downloaded and stored in /Users/degrande/lhapdf2/share/lhapdf/PDFsets
>>> write compile file for card: /Users/degrande/2.2.0/PROC_sm_2/Cards/param_card.dat
>>> run_card missed argument xmtcentral. Takes default: 0.0
>>> run_card missed argument d. Takes default: 1.0
>>> run_card missed argument gridrun. Takes default: False
>>> run_card missed argument fixed_couplings. Takes default: True
>>> Error detected in "generate_events run_01"
>>> write debug file /Users/degrande/2.2.0/PROC_sm_2/run_01_tag_1_debug.log
>>> If you need help with this issue please contact us on https://answers.launchpad.net/madgraph5
>>> MadGraph5Error : A compilation Error occurs when trying to compile /Users/degrande/2.2.0/PROC_sm_2/Source.
>>>      The compilation fails with the following output message:
>>>          gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132  -c -o combine_events.o combine_events.f
>>>          gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132  -c -o alfas_functions.o alfas_functions.f
>>>          gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -o ../bin/internal/combine_events combine_events.o  rw_events.o ranmar.o  kin_functions.o open_file.o rw_routines.o alfas_functions.o setrun.o -L../lib/ -lmodel -lpdf -lLHAPDF -lstdc++
>>>          Undefined symbols for architecture x86_64:
>>>            "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__init(char const*, unsigned long)", referenced from:
>>>                _getprefixpath_ in libLHAPDF.a(getdatapath.o)
>>>                _getindexpath_ in libLHAPDF.a(getdatapath.o)
>>>                _getdatapath_ in libLHAPDF.a(getdatapath.o)
>>>                _getlhapdfversion_ in libLHAPDF.a(version.o)
>>>            "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__init(char const*, unsigned long, unsigned long)", referenced from:
>>>                std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > std::__1::operator+<char, std::__1::char_traits<char>, std::__1::allocator<char> >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char const*) in libLHAPDF.a(getdatapath.o)
>>>            "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::append(char const*)", referenced from:
>>>                _getindexpath_ in libLHAPDF.a(getdatapath.o)
>>>            "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::append(char const*, unsigned long)", referenced from:
>>>                std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > std::__1::operator+<char, std::__1::char_traits<char>, std::__1::allocator<char> >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char const*) in libLHAPDF.a(getdatapath.o)
>>>            "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::assign(char const*)", referenced from:
>>>                _getprefixpath_ in libLHAPDF.a(getdatapath.o)
>>>            "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_string()", referenced from:
>>>                _getprefixpath_ in libLHAPDF.a(getdatapath.o)
>>>                _getindexpath_ in libLHAPDF.a(getdatapath.o)
>>>                _getdatapath_ in libLHAPDF.a(getdatapath.o)
>>>                std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > std::__1::operator+<char, std::__1::char_traits<char>, std::__1::allocator<char> >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char const*) in libLHAPDF.a(getdatapath.o)
>>>                _getlhapdfversion_ in libLHAPDF.a(version.o)
>>>            "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::operator=(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
>>>                _getdatapath_ in libLHAPDF.a(getdatapath.o)
>>>          ld: symbol(s) not found for architecture x86_64
>>>          collect2: error: ld returned 1 exit status
>>>          make: *** [../bin/internal/combine_events] Error 1
>>>
>>> Cheers,
>>>
>>> Celine
>>> ________________________________________
>>> From: <email address hidden> [<email address hidden>] on behalf of marco zaro [<email address hidden>]
>>> Sent: Friday, September 12, 2014 1:45 PM
>>> To: DEGRANDE C.
>>> Subject: Re: [Bug 1368721] [NEW] lhapdf error on mac ld: symbol(s) not found for architecture x86_64 collect2: error: ld returned 1 exit status
>>>
>>> Hi Celine,
>>> what error do you get?
>>> on which machine and with version of OS/compilers are you using?
>>> wich process are you trying?
>>> Cheers,
>>>
>>> Marco
>>> On 12 Sep 2014, at 14:42, Launchpad Bug Tracker <email address hidden> wrote:
>>>
>>>> Olivier Mattelaer (olivier-mattelaer) has assigned this bug to you for MadGraph5_aMC@NLO:
>>>>
>>>> Hi,
>>>>
>>>> I can install pdf version 5 but then I got compilation error in MG. I
>>>> cannot install version 6 because I do not have the right version of
>>>> Boost.
>>>>
>>>> Cheers,
>>>>
>>>> Celine
>>>>
>>>> ** Affects: mg5amcnlo
>>>>   Importance: Undecided
>>>>   Assignee: marco zaro (marco-zaro)
>>>>       Status: New
>>>>
>>>> --
>>>> lhapdf error on mac ld: symbol(s) not found for architecture x86_64       collect2: error: ld returned 1 exit status
>>>> https://bugs.launchpad.net/bugs/1368721
>>>> You received this bug notification because you are a bug assignee.
>>>
>>> --
>>> You received this bug notification because you are subscribed to the bug
>>> report.
>>> https://bugs.launchpad.net/bugs/1368721
>>>
>>> Title:
>>> lhapdf error on mac ld: symbol(s) not found for architecture x86_64
>>> collect2: error: ld returned 1 exit status
>>>
>>> Status in MadGraph5_aMC@NLO Generator:
>>> New
>>>
>>> Bug description:
>>> Hi,
>>>
>>> I can install pdf version 5 but then I got compilation error in MG. I
>>> cannot install version 6 because I do not have the right version of
>>> Boost.
>>>
>>> Cheers,
>>>
>>> Celine
>>>
>>> To manage notifications about this bug go to:
>>> https://bugs.launchpad.net/mg5amcnlo/+bug/1368721/+subscriptions
>>>
>>> --
>>> You received this bug notification because you are a bug assignee.
>>> https://bugs.launchpad.net/bugs/1368721
>>>
>>> Title:
>>> lhapdf error on mac ld: symbol(s) not found for architecture x86_64
>>> collect2: error: ld returned 1 exit status
>>>
>>> Status in MadGraph5_aMC@NLO Generator:
>>> New
>>>
>>> Bug description:
>>> Hi,
>>>
>>> I can install pdf version 5 but then I got compilation error in MG. I
>>> cannot install version 6 because I do not have the right version of
>>> Boost.
>>>
>>> Cheers,
>>>
>>> Celine
>>>
>>> To manage notifications about this bug go to:
>>> https://bugs.launchpad.net/mg5amcnlo/+bug/1368721/+subscriptions
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1368721
>>
>> Title:
>>  lhapdf error on mac ld: symbol(s) not found for architecture x86_64
>>  collect2: error: ld returned 1 exit status
>>
>> Status in MadGraph5_aMC@NLO Generator:
>>  New
>>
>> Bug description:
>>  Hi,
>>
>>  I can install pdf version 5 but then I got compilation error in MG. I
>>  cannot install version 6 because I do not have the right version of
>>  Boost.
>>
>>  Cheers,
>>
>>  Celine
>>
>> To manage notifications about this bug go to:
>> https://bugs.launchpad.net/mg5amcnlo/+bug/1368721/+subscriptions
>>
>> --
>> You received this bug notification because you are a bug assignee.
>> https://bugs.launchpad.net/bugs/1368721
>>
>> Title:
>>  lhapdf error on mac ld: symbol(s) not found for architecture x86_64
>>  collect2: error: ld returned 1 exit status
>>
>> Status in MadGraph5_aMC@NLO Generator:
>>  New
>>
>> Bug description:
>>  Hi,
>>
>>  I can install pdf version 5 but then I got compilation error in MG. I
>>  cannot install version 6 because I do not have the right version of
>>  Boost.
>>
>>  Cheers,
>>
>>  Celine
>>
>> To manage notifications about this bug go to:
>> https://bugs.launchpad.net/mg5amcnlo/+bug/1368721/+subscriptions
>

--
You received this bug notification because you are subscribed to the bug
report.
https://bugs.launchpad.net/bugs/1368721

Title:
  lhapdf error on mac ld: symbol(s) not found for architecture x86_64
  collect2: error: ld returned 1 exit status

Status in MadGraph5_aMC@NLO Generator:
  New

Bug description:
  Hi,

  I can install pdf version 5 but then I got compilation error in MG. I
  cannot install version 6 because I do not have the right version of
  Boost.

  Cheers,

  Celine

To manage notifications about this bug go to:
https://bugs.launchpad.net/mg5amcnlo/+bug/1368721/+subscriptions