[LLVMdev] gcc 4.8.x dragonegg support

[Duncan Sands]

Hi Jack,

On 09/05/13 18:21, Jack Howarth wrote:
> On Wed, May 08, 2013 at 06:53:05AM -0700, Peter Collingbourne wrote:
>> On Wed, May 08, 2013 at 09:25:55AM -0400, Jack Howarth wrote:
>>> Duncan,
>>>      I was wondering if you plan on supporting the build of dragonegg under gcc 4.8.1svn
>>> for the llvm 3.3 release? Is the deprecation and poisoning of IDENT_ASM_OP too problematic
>>> to work around without some additional substitute being added in FSF gcc upstream?
>>
>> Hi Jack,
>>
>> There's a patch under review to add gcc 4.8 support:
>> http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130401/170127.html
>
> Peter,
>     Thanks. With the second patch applied, current dragonegg 3.3svn builds under FSF gcc 4.8.1svn
> with the plugin header fix applied. There appears to be a regression in the Polyhedron 2005
> benchmarks for aermod and rnflow. The first fails to compile with the errror...
>
> % /sw/lib/gcc4.8/bin/gfortran -fplugin=/sw/lib/gcc4.8/lib/dragonegg.so -specs=/sw/lib/gcc4.8/lib/integrated-as.specs -O1  aermod.f90 -o aermod

does it happen without -specs=/sw/lib/gcc4.8/lib/integrated-as.specs ?

Ciao, Duncan.

> Undefined symbols for architecture x86_64:
>    "_iround", referenced from:
>        _stodbl_ in ccZmJVlP.o
>        _evper_ in ccZmJVlP.o
>    "_iroundf", referenced from:
>        _aver_ in ccZmJVlP.o
>        _vdp_ in ccZmJVlP.o
>        _stonum_ in ccZmJVlP.o
>        _terrst_ in ccZmJVlP.o
>        _hrqext_ in ccZmJVlP.o
>        _averev_ in ccZmJVlP.o
>        _wake_dfsn2_ in ccZmJVlP.o
>        ...
> ld: symbol(s) not found for architecture x86_64
> collect2: error: ld returned 1 exit status
>
> and the second as...
>
> % /sw/lib/gcc4.8/bin/gfortran -fplugin=/sw/lib/gcc4.8/lib/dragonegg.so -specs=/sw/lib/gcc4.8/lib/integrated-as.specs -O1 rnflow.f90 -o rnflow
> Undefined symbols for architecture x86_64:
>    "_iroundf", referenced from:
>        _cmpmat_ in ccaC6IRb.o
>        _MAIN__ in ccaC6IRb.o
> ld: symbol(s) not found for architecture x86_64
> collect2: error: ld returned 1 exit status
>
>           Jack
>
>>
>> Part of that patch has already been applied.  I gather that Duncan
>> has been busy with conference organisation so it may take some time
>> for him to review the rest of it.
>>
>> Thanks,
>> --
>> Peter