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

[Scott Hawley]

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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