This should build on OS X. Use homebrew to install deps & this command:

Within src directory:

    make USE_UPNP=1 -j $(sysctl -n hw.ncpu) -f Makefile.osx all
Update checkpoint to block 193000
Merge pull request #171 from phelixnmc/Checkpoint193000

Update checkpoint to block 193000
Fixed missing return from non-void fn
Merge pull request #174 from pmconrad/namecoinq

Fixed missing return from non-void fn
SetupEnvironment() commit
Tweak name_list a little bit.

Remove unused variable and create other variable later (where it is
needed).  This "fixes" some oversights from the latest name_list
optimisations.
Merge branch 'namecoinq' into macosx
Macro guards to make it compile on non-clang compilers.
Switched to Berkeley DB 4. Other changes (see details below!!!)

- got rid of gthread
+ removed a bunch of unused and irrelevant-to-osx stuff from Makefile
+ no need to specify `USE_UPNP=1`, it is done for you (make sure to install it!)

Instructions:

1. `brew install openssl berkeley-db4 boost miniupnpc`
2. cd src && make -f Makefile.osx -j $(sysctl -n hw.ncpu) all
Bloody MSG_NOSIGNAL defines for linux/mac/win compat.

Thanks for pointing it out @luke-jr!
Fix last breaking change on linux. Now compiles (at least with clang :P)
Merge pull request #176 from itoffshore/namecoinq

SetupEnvironment() commit **(revised)**
Merge pull request #177 from domob1812/namelist-tweak

Tweak name_list a little bit.
fix util.cpp
Merge pull request #179 from itoffshore/namecoinq

fix util.cpp
Merge pull request #136 from okTurtles/macosx

Minimal changes to get building on OS X with clang and Homebrew
Update README.md

Updated link for build instructions.
Merge pull request #186 from shobute/patch-1

Update README.md
Re-enable "getheaders" network command.