On Wed, May 9, 2012 at 8:57 AM, Noel O'Boyle <baoille...@gmail.com> wrote:
> On 9 May 2012 13:22, David Lonie <david.lo...@kitware.com> wrote:
>
>> On Wed, May 9, 2012 at 7:42 AM, David Lonie <david.lo...@kitware.com>wrote:
>>
>>> On Wed, May 9, 2012 at 4:42 AM, Noel O'Boyle <baoille...@gmail.com>wrote:
>>>
>>>> In the OB docs, there's an example C++ program. Can you edit this so
>>>> that it reproduces the problem?
>>>>
>>>
>>> I'll give this a try.
>>>
>>
>> Surprisingly, I was able to reproduce this on the first try :-)
>>
>> Steps to reproduce with MSVC C++ 2010 Express:
>>
>> 1) File > New > Project
>> 2) Win32 Console Application, name openbabel-test
>> 3) Ok
>> 4) Next
>> 5) Check "Empty Project"
>> 6) Right click on Source Files in solution explorer, Add > New Item > C++
>> file, name main.cpp > Add
>> 7) Write source file:
>>
>> #include <iostream>
>> #include <openbabel/mol.h>
>>
>> int main(int argc, char **argv)
>> {
>> int atomicNum = 4;
>> std::cout << OpenBabel::etab.GetSymbol(atomicNum)
>> << " has an atomic number of " << atomicNum << std::endl;
>> return 0;
>> }
>>
>> 8) Right click on openbabel-test in solution explorer > Properties
>> 9) Select C/C++ in tree, add "C:\Program Files
>> (x86)\openbabel\include\openbabel-2" to Additional Include Directories
>> 10) Select "Linker" in tree, add "C:\Program Files (x86)\openbabel\bin"
>> to Additional Library Directories
>> 11) Select "Linker" > "Input" in tree, add openbabel-2.lib to Additional
>> Dependencies
>> 12) Build and fail:
>>
>> 1>------ Build started: Project: openbabel-test, Configuration: Debug
>> Win32 ------
>> 1>main.obj : error LNK2001: unresolved external symbol "class
>> OpenBabel::OBElementTable OpenBabel::etab" (?etab@OpenBabel
>> @@3VOBElementTable@1@A)
>> 1>c:\users\dl\documents\visual studio
>> 2010\Projects\openbabel-test\Debug\openbabel-test.exe : fatal error
>> LNK1120: 1 unresolved externals
>> ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped
>> ==========
>>
>> Can anyone reproduce?
>>
>>
> Confirmed. It works fine if you create your own OBElementTable, but the
> linker cannot find the global etab. I'm going to have to bounce this on to
> Chris, whether he understands what's going on... That's strange though,
> because it's possible to access all of these from the Python interface, so
> they must be exposed (although I haven't checked this with MSVC 2010).
Hate to be a nag, but this is holding up my next release of XtalOpt. Any
ideas what may be the problem?
Dave
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