On 22 May 2015, at 18:34, Ian Hinder <[email protected]> wrote: > > On 22 May 2015, at 16:10, Roberto De Pietri <[email protected]> wrote: > >> Hi Ian: >> >> >> Thanks for the answer. I followed exactly your procedure and I was very >> surprised of having >> a failing compilation. Than I starting tracing back the problem. >> * All the thorns except one were compiling correctly. >> * The failing thorn was CarpetIOHDF5 and of the 5 source files present only >> 3 failed >> * The error was very strange because the only real problem was related to >> a system include >> “/opt/local/lib/gcc49/gcc/x86_64-apple-darwin14/4.9.2/include/mmintrin.h” >> and was related to conversion using AVX intel intrinsic. The error were of >> the type: >> >> error: can’t convert between vector values of different size >> return (__m64) __builtin_ia32_vec_init_v2si (__i, 0); > > There is a stackoverflow post > (http://stackoverflow.com/questions/19043109/gcc-4-8-1-combining-c-code-with-c11-code > ) which describes a similar problem, which I haven't studied in depth, but > they seem to suggest that it's a bug in gcc, and that setting --std=gnu++11 > instead of --std=c++11 in CXXFLAGS will work around the problem. We > currently have > > CXXFLAGS = -g -std=c++14 > > so I'm guessing that changing this to > > CXXFLAGS = -g -std=gnu++14 > > might have the same effect. > > What I don't understand is why we didn't pick this up in testing. I > successfully compiled the whole ET using exactly that set of MacPorts > packages and the optionlist before the release, and the gcc49 macports > package hasn't been updated since 4 weeks ago.
I should add that I tested it on 10.9.5, since I haven't been brave enough to update to 10.10 yet. I think Erik was testing on 10.10, but he can confirm that. -- Ian Hinder http://members.aei.mpg.de/ianhin
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