OSX support

[tjhei]

current workflow:
compile gcc and openmpi using default compilers of homebrew, then set the wrapper to use gcc (I couldn't compile openmpi successfully with gcc):

git clone https://github.com/Homebrew/brew.git $BREWDIR
export PATH=$BREWDIR/bin:$PATH
export HOMEBREW_BUILD_FROM_SOURCE=1
brew tap homebrew/science
brew install --build-bottle ninja cmake gcc openmpi
export OMPI_CXX=g++-6
export OMPI_CC=gcc-6

git clone https://github.com/dealii/candi.git
cd candi
./candi.sh -j 2 --packages="p4est trilinos" -p $BREWDIR/

Current problems:

• opencascade 0.17 and 0.18 don't work, only master
• trilinos can not find parmetis (so disable)
• ...

[koecher]

for superlu_dist, and parmetis with trilions I think I have a patch - but compilation still runs

[tjhei]

Everything else runs through when disabling parmetis, so that is pretty good.

[tjhei]

except that I am getting:

step-3(68848,0x7fffcd5fc3c0) malloc: *** error for object 0x7f96fa020c00: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
Abort trap: 6

when any program exits. Let me know if you also see this.

[tjhei]

Oh, and I am getting

step.debug: RUN failed. Output:
dyld: Library not loaded: libz.so.1.2.8
  Referenced from: /Users/heister/deal.ii-candi/tmp/build/deal.II-v8.5.0/tests/quick_tests/./step.debug
  Reason: image not found

when I do make test inside the deal.II build directory.

[koecher]

Well, we need to update the DYLD_LIBRARY_PATH in several places to get rid of this runtime errors.
My solution for parmetis and superlu_dist is working, I prepare a PR for this.

[koecher]

as compiler I used only brew install open-mpi --c++11 --with-mpi-threads-enable and let candi to pick up. Your alloc error might be from swiching the underlying c++ compiler.

[tjhei]

Your alloc error might be from swiching the underlying c++ compiler.

Yes, I would like to switch to gcc for packing deal.II as an app, so that we are not relying on the exact same clang version installed on the machine.

[koecher]

I have an older candi version, which allows me to install gcc (5) and a mpi compiler on top of it, I think I will update this for the mac version. Then we could install gcc/open-mpi and with that compiler the candi-dealii installation should be fine
The project is located under github.com/koecher/cli but needs several updates for the current state of candi

[tjhei]

I have an older candi version, which allows me to install gcc

I don't think requiring an installation using homebrew is too much of a problem, certainly not for me when packaging. So don't spend time on that unless you need it.

[koecher]

this issue will be resolved by PR #26

[jppelteret]

@koecher FYI: If you write something like

closes #25

in the commit message to #26 then this issue would be closed automatically when the PR is merged :-) More magic words for github are listed here.

[koecher]

ah okay, good to know