[molpro-user] -nocxx option when configuring Molpro installation

[Evgeniy Gromov]

Andy,

Thanks for your response. I posted the question because I cannot
compile Molpro (2012.1) using intel-12, namely the c++ part.
The problem relates to the c++ headers that comes from gnu
version 4.7 . I tried to use gnu 4.6 but there is anyway
some problems, for example:

$(CXX) -c $(CXXFLAGS) -O2 DftiCxx.cpp

...

/usr/include/c++/4.6/bitset(389): error: identifier "__SIZEOF_LONG__" is 
undefined
         { return __pos / _GLIBCXX_BITSET_BITS_PER_WORD; }
                          ^

/usr/include/c++/4.6/bitset(393): error: identifier "__SIZEOF_LONG__" is 
undefined
         { return (__pos % _GLIBCXX_BITSET_BITS_PER_WORD) / __CHAR_BIT__; }



Don't you happen to know what one can do in this case.

Regards,
Evgeniy




Andy May wrote:
> Evgeniy,
>
> The -nocxx option was introduced for 2010.1 where we were still
> supporting some systems which did not have a C++ compiler, or at least
> one modern enough for Molpro. If the option is given, any features coded
> in C++ are not available.
>
>  From 2012.1 onwards you need a C++ compiler and the code will fail to
> link with unresolved references if you give -nocxx option. The option
> was left in 2012.1 just in case we needed to get the code working on
> some old system again, but it has been removed in the trunk and will not
> feature in any new version.
>
> Best wishes,
>
> Andy
>
> On 05/06/13 18:39, Evgeniy Gromov wrote:
>> Dear Developers and Users of Molpro,
>>
>> There is a short question: there is option "-nocxx"
>> for the configure file that suppresses use of c++ compiler.
>> I wonder how the c++ part of the code will be then
>> compiled (or will it be not compiled?)?
>>
>> Best regards,
>> Evgeniy
>>
>>
>> _______________________________________
>> Dr. Evgeniy Gromov
>> Theoretische Chemie
>> Physikalisch-Chemisches Institut
>> Im Neuenheimer Feld 229
>> D-69120 Heidelberg
>> Germany
>>
>> Telefon: +49/(0)6221/545263
>> Fax: +49/(0)6221/545221
>> E-mail: evgeniy at pci.uni-heidelberg.de
>> _______________________________________
>>
>>
>>
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-- 
_______________________________________
Dr. Evgeniy Gromov
Theoretische Chemie
Physikalisch-Chemisches Institut
Im Neuenheimer Feld 229
D-69120 Heidelberg
Germany

Telefon: +49/(0)6221/545263
Fax: +49/(0)6221/545221
E-mail: evgeniy at pci.uni-heidelberg.de
_______________________________________