[Users] 'Ambiguous' g++ collisions on isnan (cmath), -std=gnu++0x

Fri Aug 3 06:45:10 CDT 2012

I don't know why the __builtin_isnan etc. are not defined for some
versions of the Intel compilers. I suspect an incompatibility with the
Intel compiler and the respective system libraries (which provide
math.h). I have updated the Simfactory option lists.

-erik

On Fri, Aug 3, 2012 at 3:44 AM, Ian Hinder <ian.hinder at aei.mpg.de> wrote:
>
> On 2 Aug 2012, at 22:40, Erik Schnetter wrote:
>
>> Try now.
>
> This causes a build failure on Datura:
>
>         http://git.barrywardell.net/EinsteinToolkitTestResults.git/blob/c32794e5e57db36da2fede2f1eec451daf108a9c:/build.log
>
>> /home/ianhin/Cactus/EinsteinToolkitTests/configs/EinsteinToolkitTests_bb930fc2b4a2900b3c5a780e79244bb0ddefb81d/lib/libthorn_Vectors.a(test.cc.o): In function `Vectors_Test':
>> /home/ianhin/Cactus/EinsteinToolkitTests/arrangements/LSUThorns/Vectors/src/test.cc:252: undefined reference to `__builtin_isnan'
>> /home/ianhin/Cactus/EinsteinToolkitTests/arrangements/LSUThorns/Vectors/src/test.cc:252: undefined reference to `__builtin_isnan'
>> /home/ianhin/Cactus/EinsteinToolkitTests/arrangements/LSUThorns/Vectors/src/test.cc:251: undefined reference to `__builtin_isnan'
>> /home/ianhin/Cactus/EinsteinToolkitTests/arrangements/LSUThorns/Vectors/src/test.cc:251: undefined reference to `__builtin_isnan'
>> /home/ianhin/Cactus/EinsteinToolkitTests/arrangements/LSUThorns/Vectors/src/test.cc:249: undefined reference to `__builtin_isnan'
>> /home/ianhin/Cactus/EinsteinToolkitTests/configs/EinsteinToolkitTests_bb930fc2b4a2900b3c5a780e79244bb0ddefb81d/lib/libthorn_Vectors.a(test.cc.o):/home/ianhin/Cactus/EinsteinToolkitTests/arrangements/LSUThorns/Vectors/src/test.cc:249: more undefined references to `__builtin_isnan' follow
>> make[1]: *** [/home/ianhin/Cactus/EinsteinToolkitTests/exe/cactus_EinsteinToolkitTests_bb930fc2b4a2900b3c5a780e79244bb0ddefb81d] Error 1
>> make: *** [EinsteinToolkitTests_bb930fc2b4a2900b3c5a780e79244bb0ddefb81d] Error 2
>> 0.10user 0.27system 12:11.56elapsed 0%CPU (0avgtext+0avgdata 14928maxresident)k
>> 0inputs+3032outputs (0major+1354minor)pagefaults 0swaps
>> Build failed
>
>>
>> -erik
>>
>> On 2012-08-02, at 15:36 , Erik Schnetter <schnetter at cct.lsu.edu> wrote:
>>
>>> The solution is likely to wrap the calls to isnan into a my_isnan function, similar to the way in which signbit is wrapped. I am testing a patch.
>>>
>>> -erik
>>>
>>> On 2012-08-02, at 15:14 , Scott Hawley <scott.hawley at belmont.edu> wrote:
>>>
>>>> I added '-D__builtin_isinf=::isinf -D__builtin_isnan=::isnan' as I saw in
>>>> a few simfactory .cfg files, but no luck.
>>>>
>>>> (Thanks to
>>>> http://lists.einsteintoolkit.org/pipermail/users/2011-June/001151.html)
>>>>
>>>> There is currently no nautilus.cfg file, but if someone would like access
>>>> to Nautilus in order to make one (which is what I seem to be doing,
>>>> slowly), I'd be happy to add you to my allocation! :-)
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On 8/2/12 1:58 PM, "Scott Hawley" <scott.hawley at belmont.edu> wrote:
>>>>
>>>>> Hi.  The following is a well-documented collision that occurs with the
>>>>> cmath header.
>>>>>
>>>>> The fixes I've seen around the 'net all involve modifying the source and
>>>>> putting in #define statements. But the code in question isn't mine.
>>>>>
>>>>> Is there a "-f_____" compiler flag I set instead?
>>>>>
>>>>> Thanks,
>>>>> Scott
>>>>>
>>>>>
>>>>>
>>>>> COMPILING
>>>>> /nics/c/home/hawleys/Cactus/arrangements/LSUThorns/Vectors/src/test.cc
>>>>> current_wd=`pwd` ; cd /nics/c/home/hawleys/Cactus/configs/texmex/scratch ;
>>>>> g++ -LMPICH_IGNORE_CXX_SEEK -g -DCARPET_DEBUG  -fopenmp  -O2 -m64
>>>>> -std=gnu++0x -g -O0 -O3 -fopenmp  -c -o $current_wd/test.cc.o
>>>>> $current_wd/test.cc
>>>>> -I"/nics/c/home/hawleys/Cactus/arrangements/LSUThorns/Vectors/src"
>>>>> -I"/nics/c/home/hawleys/Cactus/arrangements/LSUThorns/Vectors/src/include"
>>>>> -I"/nics/c/home/hawleys/Cactus/configs/texmex/config-data"
>>>>> -I"/nics/c/home/hawleys/Cactus/configs/texmex/bindings/include"
>>>>> -I"/nics/c/home/hawleys/Cactus/src/include"
>>>>> -I"/nics/c/home/hawleys/Cactus/arrangements"
>>>>> -I"/nics/c/home/hawleys/Cactus/configs/texmex/bindings/Configuration/Thorn
>>>>> s
>>>>> " -I"/nics/c/home/hawleys/Cactus/configs/texmex/bindings/include/Vectors"
>>>>> -I"/nics/c/home/hawleys/Cactus/arrangements/LSUThorns/Vectors/src"
>>>>> -I"/nics/c/home/hawleys/Cactus/arrangements/LSUThorns/Vectors/src/include"
>>>>> -I"/nics/c/home/hawleys/Cactus/configs/texmex/bindings/include/Vectors"
>>>>> -DCCODE
>>>>> /nics/c/home/hawleys/Cactus/configs/texmex/build/Vectors/test.cc: In
>>>>> function Œvoid Vectors_Test(cGH*)¹:
>>>>> /nics/c/home/hawleys/Cactus/configs/texmex/build/Vectors/test.cc:112:3:
>>>>> error: call of overloaded Œisnan(double&)¹ is ambiguous
>>>>> /nics/c/home/hawleys/Cactus/configs/texmex/build/Vectors/test.cc:112:3:
>>>>> note: candidates are:
>>>>> /usr/include/bits/mathcalls.h:235:1: note: int isnan(double)
>>>>> /nics/e/sw/local/nautilus/opt/gcc/4.6.3/bin/../lib/gcc/x86_64-unknown-linu
>>>>> x
>>>>> -gnu/4.6.3/../../../../include/c++/4.6.3/cmath:552:3: note: bool
>>>>> std::isnan(long double)
>>>>> /nics/e/sw/local/nautilus/opt/gcc/4.6.3/bin/../lib/gcc/x86_64-unknown-linu
>>>>> x
>>>>> -gnu/4.6.3/../../../../include/c++/4.6.3/cmath:548:3: note: bool
>>>>> std::isnan(double)
>>>>> /nics/e/sw/local/nautilus/opt/gcc/4.6.3/bin/../lib/gcc/x86_64-unknown-linu
>>>>> x
>>>>> -gnu/4.6.3/../../../../include/c++/4.6.3/cmath:544:3: note: bool
>>>>> std::isnan(float)
>>>>> /nics/c/home/hawleys/Cactus/configs/texmex/build/Vectors/test.cc:112:3:
>>>>> error: call of overloaded Œisnan(double&)¹ is ambiguous
>>>>> /nics/c/home/hawleys/Cactus/configs/texmex/build/Vectors/test.cc:112:3:
>>>>> note: candidates are:
>>>>> /usr/include/bits/mathcalls.h:235:1: note: int isnan(double)
>>>>> (  ...more of the same...   )
>>>>> make[3]: *** [test.cc.o] Error 1
>>>>> make[3]: Leaving directory
>>>>> `/nics/c/home/hawleys/Cactus/configs/texmex/build/Vectors'
>>>>> make[2]: *** [make.checked] Error 2
>>>>> make[2]: Leaving directory
>>>>> `/nics/c/home/hawleys/Cactus/configs/texmex/build/Vectors'
>>>>> make[1]: ***
>>>>> [/nics/c/home/hawleys/Cactus/configs/texmex/lib/libthorn_Vectors.a] Error
>>>>> 2
>>>>> make[1]: Leaving directory `/nics/c/home/hawleys/Cactus'
>>>>> make: *** [texmex] Error 2
>>>>>
>>>>> hawleys/Cactus> g++ --version
>>>>> g++ (GCC) 4.6.3
>>>>> Copyright (C) 2011 Free Software Foundation, Inc.
>>>>> This is free software; see the source for copying conditions.  There is NO
>>>>> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
>>>>> PURPOSE.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>
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>>> --
>>> Erik Schnetter <eschnetter at perimeterinstitute.ca>
>>> http://www.perimeterinstitute.ca/personal/eschnetter/
>>> AIM: eschnett247, Skype: eschnett, Google Talk: schnetter at gmail.com
>>>
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>>
>> --
>> Erik Schnetter <eschnetter at perimeterinstitute.ca>
>> http://www.perimeterinstitute.ca/personal/eschnetter/
>> AIM: eschnett247, Skype: eschnett, Google Talk: schnetter at gmail.com
>>
>> _______________________________________________
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>
> --
> Ian Hinder
> http://numrel.aei.mpg.de/people/hinder
>

-- 
Erik Schnetter <schnetter at cct.lsu.edu>
http://www.perimeterinstitute.ca/personal/eschnetter/