script src/post-build-osx.sh does not run (and package the app) on OSX 10.10.

A successful build will be stored in extras/build/MacOSX/build/Debug

NOTE: If Save isn't ungrayed after Process, try toggling it some more

I got it working on 10.12.6 by following the README and doing these things:

eigen git submodule URL

Problem:

$ git submodule update
[...]
Failed to clone 'sdks/eigen' a second time, aborting

Run this (copy/paste while in project root):

<<! ed .gitmodules
/eigen.git/s,RLovelett/eigen,eigenteam/eigen-git-mirror,
w
!
git submodule sync

Works:

$ git submodule update
[...]
Submodule path 'sdks/eigen': checked out 'a46d2e7337c4656f00abe54a8115f6d76153a048'
[...]

(source: #2 (comment))

clang with openmp support

Building in Xcode gives:

Unsupported option '-fopenmp'

To fix:

1. Install clang with OpenMP support (example via brew).
   brew install llvm
2. Tell Xcode to compile with that clang.
   With Build Settings open: Menu Add User-Defined Setting CC /usr/local/opt/llvm/bin/clang
3. Make sure Xcode knows that clang's library directory.
   Build setting Library Search Paths /usr/local/opt/llvm/lib
4. Link to the OpenMP dynamic library.
   App target Build Phases Link Binary With Libraries /usr/local/opt/llvm/lib/libomp.dylib

(source: Clang + OpenMP Setup in Xcode)

architecture library mismatch

Building in Xcode gives:

ld: in '/usr/local/opt/llvm/lib/libunwind.dylib', file was built for x86_64 which is not the architecture being linked (i386): /usr/local/opt/llvm/lib/libunwind.dylib for architecture i386
clang-8: error: linker command failed with exit code 1 (use -v to see invocation)
Command /usr/local/opt/llvm/bin/clang++ failed with exit code 1

To fix, change the App target build setting Architectures to Standard Architectures (64-bit Intel) (x86_64) [...].

https://github.com/RLovelett/eigen/ doesn't exist anymore. Maybe https://github.com/libigl/eigen?