Clone of this repo fails to build Node 0.12 / 4.2.3, node-gyp 3.2.1, gcc

[brianfeister]

➜  node-xpc-connection git:(master) npm install

> xpc-connection@0.1.4 install /Users/brianfeister/dev/temp/node-xpc-connection
> node-gyp rebuild

  CXX(target) Release/obj.target/binding/src/XpcConnection.o
  SOLINK_MODULE(target) Release/binding.node
ld: library not found for -lgcc_s.10.5
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Release/binding.node] Error 1
gyp ERR! build error 
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:269:23)
gyp ERR! stack     at ChildProcess.emit (events.js:110:17)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (child_process.js:1067:12)
gyp ERR! System Darwin 14.3.0
gyp ERR! command "node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /Users/brianfeister/dev/temp/node-xpc-connection
gyp ERR! node -v v0.12.0
gyp ERR! node-gyp -v v2.0.2
gyp ERR! not ok 

npm ERR! Darwin 14.3.0
npm ERR! argv "node" "/usr/local/bin/npm" "install"
npm ERR! node v0.12.0
npm ERR! npm  v2.14.0
npm ERR! code ELIFECYCLE
npm ERR! xpc-connection@0.1.4 install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the xpc-connection@0.1.4 install script 'node-gyp rebuild'.
npm ERR! This is most likely a problem with the xpc-connection package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node-gyp rebuild
npm ERR! You can get their info via:
npm ERR!     npm owner ls xpc-connection
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/brianfeister/dev/temp/node-xpc-connection/npm-debug.log
➜  node-xpc-connection git:(master) node -v                
v0.12.0
➜  node-xpc-connection git:(master) node-gyp -v            
v3.2.1
➜  node-xpc-connection git:(master) node -v
v4.2.3
➜  node-xpc-connection git:(master) gcc -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.3.0
Thread model: posix
➜  node-xpc-connection git:(master) which gcc
/usr/bin/gcc
➜  node-xpc-connection git:(master) echo $PATH
/Users/brianfeister/.nvm/versions/node/v4.2.3/bin:/usr/local/heroku/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin

These config details all seem fine according to other open issues. Any ideas?

[brianfeister]

Also it fails on node v0.12 which I initially tried with

[brianfeister]

The fix for this ended up being fairly involved. I had Yosemite installed (long after release of El Capitain) and Xcode 6. I had installed Node via brew when Xcode 6 was active, but it was necessary to update to Xcode 7, then update my toolchain to use Xcode 7, then brew rm node and re-install brew install node. Before installing Node via Homebrew, I needed an Xcode version 7 or better in clang -v output like this:

➜  clang -v
Apple LLVM version 7.0.2 (clang-700.1.81)
Target: x86_64-apple-darwin14.5.0
Thread model: posix

Here's a more thorough walkthrough of that part:
Homebrew/legacy-homebrew#40653