Boost 1.58.0 was released on April 17th, and it breaks compilation with Caffe on OSX (when the build reaches one of the "NVCC" steps, you get a string of errors starting with complaining about the absence of a semicolon, that look like this: /usr/local/include/boost/smart_ptr/detail/sp_counted_base_clang.hpp(27): error: expected a ";"
Googling landed me on this page which suggested an incompatibility with boost 1.58.0 (https://groups.google.com/forum/#!topic/caffe-users/fY2r6bO3_0w). However, the steps suggested in the solution (as of May 26th; it seems to have been updated since) didn't work for me. So this is what I did, and it's kindof sketchy but oh well...
[July 16th update: Ian Blenke put together a boost-1.57 brew and mentioned how to use it in the comments; it looks a lot easier and less sketchy to install, but if that does not work for you, read on...]
1) cd $(brew --prefix) (for me this cd's to /usr/local/).
2) cd Library/Formula
3) Make a backup of the files boost.rb and boost-python.rb
4) Replace the boost.rb file with the contents of https://raw.githubusercontent.com/Homebrew/homebrew/6fd6a9b6b2f56139a44dd689d30b7168ac13effb/Library/Formula/boost.rb
5) Replace the boost-python.rb file with the contents of https://raw.githubusercontent.com/Homebrew/homebrew/3141234b3473717e87f3958d4916fe0ada0baba9/Library/Formula/boost-python.rb
6) brew uninstall boost (this should uninstall the 1.58.0 version)
7) brew install boost (this should install 1.57.0 since you've replaced the rb files)
(Edit: You *may* have to do "brew link boost" after this - can't recall exactly. Also, Parang Saraf pointed out a "no rule to make target" error in the comments, which they solved with "make clean")
Also, I missed this guide the first time I went through the page, so I'm linking to it in case you did too: http://caffe.berkeleyvision.org/install_osx.html
Googling landed me on this page which suggested an incompatibility with boost 1.58.0 (https://groups.google.com/forum/#!topic/caffe-users/fY2r6bO3_0w). However, the steps suggested in the solution (as of May 26th; it seems to have been updated since) didn't work for me. So this is what I did, and it's kindof sketchy but oh well...
[July 16th update: Ian Blenke put together a boost-1.57 brew and mentioned how to use it in the comments; it looks a lot easier and less sketchy to install, but if that does not work for you, read on...]
1) cd $(brew --prefix) (for me this cd's to /usr/local/).
2) cd Library/Formula
3) Make a backup of the files boost.rb and boost-python.rb
4) Replace the boost.rb file with the contents of https://raw.githubusercontent.com/Homebrew/homebrew/6fd6a9b6b2f56139a44dd689d30b7168ac13effb/Library/Formula/boost.rb
5) Replace the boost-python.rb file with the contents of https://raw.githubusercontent.com/Homebrew/homebrew/3141234b3473717e87f3958d4916fe0ada0baba9/Library/Formula/boost-python.rb
6) brew uninstall boost (this should uninstall the 1.58.0 version)
7) brew install boost (this should install 1.57.0 since you've replaced the rb files)
(Edit: You *may* have to do "brew link boost" after this - can't recall exactly. Also, Parang Saraf pointed out a "no rule to make target" error in the comments, which they solved with "make clean")
Also, I missed this guide the first time I went through the page, so I'm linking to it in case you did too: http://caffe.berkeleyvision.org/install_osx.html