[MOAB-dev] crash with clang compiler

[Robert Maynard]

Starting with Snow Leopard the gcc 4.2 front end has been forwarding
to the llvm compiler ( You can see this by looking at the --version
output). Starting with Mountain Lion the default compiler ( cc / c++ )
is llvm-clang with gcc-llvm being provided for backwards
compatibility. The next major update to XCode should completely remove
gcc-llvm 4.2 from macs.

On Mon, Jun 3, 2013 at 6:29 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
>
> On Jun 3, 2013, at 3:40 PM, Rajeev Jain <jain at mcs.anl.gov> wrote:
>
>> For some reason Mac still ships gcc-4.2 and the default compiler and that's what I use.
>> My bad. I thought the default was a clang compiler on OSX, I use the default gcc compiler on OSX.
>
>    You can try --with-cc=/usr/bin/clang --with-cxx=/usr/bin/clang++ to use the clang compilers when configuring MPI.
>
>     I have noticed less than perfect behavior by clang++ on code that it should compile in the past.
>
>    Barry
>
>>
>> Rajeev
>>
>> From: Jed Brown <jedbrown at mcs.anl.gov>
>> To: Rajeev Jain <jain at mcs.anl.gov>; Barry Smith <bsmith at mcs.anl.gov>; "moab-dev at mcs.anl.gov" <moab-dev at mcs.anl.gov>
>> Sent: Monday, June 3, 2013 3:13 PM
>> Subject: Re: [MOAB-dev] crash with clang compiler
>>
>> Rajeev Jain <jain at mcs.anl.gov> writes:
>>
>> > I use clang compilers.
>>
>> What Clang compiler?  The output below shows a 6-year old version of gcc.
>>
>> > Haven't seen the error that you see.
>> >
>> >
>> > ==> gcc -v
>> > Using built-in specs.
>> > Target: i686-apple-darwin11
>> > Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.11~182/src/configure --disable-checking --enable-werror --prefix=/Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2336.11~182/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1
>> > Thread model: posix
>> > gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
>>
>>
>