Drop osx builds with Node 0.12

.travis.yml

@@ -21,6 +21,10 @@ env:
  - TRAVIS_NODE_VERSION="7"
  - TRAVIS_NODE_VERSION="8"
  - TRAVIS_NODE_VERSION="9"
+matrix:
+ exclude:
+ - os: osx
+ env: TRAVIS_NODE_VERSION="0.12"
 install:
  - rm -rf ~/.nvm && git clone https://github.com/creationix/nvm.git ~/.nvm && (cd ~/.nvm && git checkout `git describe --abbrev=0 --tags`) && source ~/.nvm/nvm.sh && nvm install $TRAVIS_NODE_VERSION
  - if [[ $TRAVIS_OS_NAME == "linux" ]]; then export CXX=g++-4.8; fi

README.md

@@ -21,6 +21,7 @@ This project also contains some helper utilities that make addon development a b
  * **[Example](#example)**
  * **[API](#api)**
  * **[Tests](#tests)**
+ * **[Knowns issues](#issues)**
  * **[Governance & Contributing](#governance)**
 
 <a name="news"></a>
@@ -341,6 +342,33 @@ npm install
 make test
 ```
 
+<a name="issues"></a>
+
+## Known issues
+
+### Compiling against Node.js 0.12 on OSX
+
+With new enough compilers available on OSX, the versions of V8 headers corresponding to Node.js 0.12
+do not compile anymore. The error looks something like:
+
+```
+❯ CXX(target) Release/obj.target/accessors/cpp/accessors.o
+In file included from ../cpp/accessors.cpp:9:
+In file included from ../../nan.h:51:
+In file included from /Users/ofrobots/.node-gyp/0.12.18/include/node/node.h:61:
+/Users/ofrobots/.node-gyp/0.12.18/include/node/v8.h:5800:54: error: 'CreateHandle' is a protected member of 'v8::HandleScope'
+ return Handle<T>(reinterpret_cast<T*>(HandleScope::CreateHandle(
+ ~~~~~~~~~~~~~^~~~~~~~~~~~
+```
+
+This can be worked around by patching your local versions of v8.h corresponding to Node 0.12 to make
+`v8::Handle` a friend of `v8::HandleScope`. Since neither Node.js not V8 support this release line anymore
+this patch cannot be released by either project in an official release.
+
+For this reason, we do not test against Node.js 0.12 on OSX in this project's CI. If you need to support
+that configuration, you will need to either get an older compiler, or apply a source patch to the version
+of V8 headers as a workaround.
+
 <a name="governance"></a>
 
 ## Governance & Contributing