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build problems on Ubuntu with gcc 4.6
Issue #1122
closed
Building ET trunk on a "Linux version 3.2.0-29-generic-pae (buildd@roseapple) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #46-Ubuntu SMP Fri Jul 27 17:25:43 UTC 2012" Ubuntu virtual machine (32bit) I get:
COMPILING /home/lovelace/trunk/Cactus/arrangements/Carpet/CarpetLib/src/backtrace.cc
In file included from /home/lovelace/trunk/Cactus/arrangements/Carpet/CarpetLib/src/dist.hh:20:0,
from /home/lovelace/trunk/Cactus/arrangements/Carpet/CarpetLib/src/backtrace.cc:405:
/home/lovelace/trunk/Cactus/arrangements/Carpet/CarpetLib/src/defs.hh: In function ‘int myisinf(double)’:
/home/lovelace/trunk/Cactus/arrangements/Carpet/CarpetLib/src/defs.hh:234:18: error: call of overloaded ‘isinf(const double&)’ is ambiguous
/home/lovelace/trunk/Cactus/arrangements/Carpet/CarpetLib/src/defs.hh:234:18: note: candidates are:
/usr/include/i386-linux-gnu/bits/mathcalls.h:203:1: note: int isinf(double)
/usr/include/c++/4.6/cmath:534:3: note: bool std::isinf(long double)
/usr/include/c++/4.6/cmath:530:3: note: bool std::isinf(double)
/usr/include/c++/4.6/cmath:526:3: note: bool std::isinf(float)
/home/lovelace/trunk/Cactus/arrangements/Carpet/CarpetLib/src/defs.hh: In function ‘int myisnan(double)’:
/home/lovelace/trunk/Cactus/arrangements/Carpet/CarpetLib/src/defs.hh:249:18: error: call of overloaded ‘isnan(const double&)’ is ambiguous
/home/lovelace/trunk/Cactus/arrangements/Carpet/CarpetLib/src/defs.hh:249:18: note: candidates are:
/usr/include/i386-linux-gnu/bits/mathcalls.h:236:1: note: int isnan(double)
/usr/include/c++/4.6/cmath:552:3: note: bool std::isnan(long double)
/usr/include/c++/4.6/cmath:548:3: note: bool std::isnan(double)
/usr/include/c++/4.6/cmath:544:3: note: bool std::isnan(float)
make[3]: *** [backtrace.cc.o] Error 1
make[2]: *** [make.checked] Error 2
make[1]: *** [/home/lovelace/trunk/Cactus/configs/sim/lib/libthorn_CarpetLib.a] Error 2
make: *** [sim] Error 2
lovelace@ETUbuntu:~/trunk/Cactus$
This might be related to http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48891 . The options list used was the simfactory ubuntu.cfg one.
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Comments (6)
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I believe I had trouble getting the 64bit version to install in VirtualBox. This was on my laptop which lacks full hardware (ie. eg HVM does not work) virtualization. It would crash right at the installation menu I think. This might work on my workstation where I have a somewhat more featureful CPU.
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My compiler is gnu 4.7.2 on Fedora 17 and it shows the problem. The idiom
using namespace std; isnan(x);is not handled correctly on my platform. Alas.
However, this error seems tied to the use of -std=c++0x. If I compile with -std=c++03 everything appears to be fine. Maybe the fix is to remove std=c++0x from simfactory settings?
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I am working on a patch.
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I treat this as a duplicate of
#1121, which now has a patch for review. -
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A slightly unrelated question: Why are you using a 32 bit machine? A 64 bit machine would presumably be faster.