[Dune] UG-3.10.0 with Apple's clang compiler

[Oliver Sander]

Hi Christoph,
setting either _2 or _3 from the command line is the UG way of setting the grid dimension.
Apparently, the same cpp symbol is also used somewhere inside clang++.  Luckily, UG
renames the _2 macro almost immediately.  Try renaming the occurrences of _2 in
ug/low/dimension.h to something else, and make the corresponding change in the build
system.  No guarantees, though.
Cheers,
Oliver

Am 11.04.2014 12:06, schrieb Christoph Grüninger:
> Hi Dune and UG and Mac users,
> one of our students uses a Mac (10.9, current command line tools) and
> tried to compile UG. He got an error from the libc++:
> 
>> libtool: compile:  clang++ -DHAVE_CONFIG_H -I. -I../.. -I../.. -I../../low -I../../gm -I../../dev -I../../dom -I../../np -I../../ui -I../../graphics/uggraph -I../../np/algebra -I../../np/udm -I../../np/procs -I../../parallel -I../../parallel/ddd -I../../parallel/ppif -I../../parallel/ddd/include -I../../parallel/dddif -I../../parallel/util -DUGLIB -DFOR_DUNE -D_2 -g -O2 -MT libdomS2_la-std_domain.lo -MD -MP -MF .deps/libdomS2_la-std_domain.Tpo -c std_domain.c -o libdomS2_la-std_domain.o
>> clang: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated
>> In file included from std_domain.c:54:
>> In file included from /Library/Developer/CommandLineTools/usr/bin/../lib/c++/v1/set:388:
>> In file included from /Library/Developer/CommandLineTools/usr/bin/../lib/c++/v1/functional:1203:
>> /Library/Developer/CommandLineTools/usr/bin/../lib/c++/v1/__functional_03:1876:18: error: expected unqualified-id
>> extern __ph<2>   _2;
>>                  ^
>> <command line>:4:12: note: expanded from here
>> #define _2 1
>>            ^
> 
> I don't know what to do about that. Because of some other constraints he
> doesn't want to install GCC or Clang from MacPorts.
> Has anybody successfully compiled UG with Apple' clang? Or any hint?
> 
> Thanks
> Christoph
> 
> 
> 
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