OpenMP support for parallel trees execution

.travis.yml

@@ -1,16 +1,27 @@
 sudo: false
-language: python
-python:
-    - "2.7"
-    - "3.5"
+language: c
+compiler:
+    - gcc
+    - clang
+os:
+    - osx
+    - linux
+env:
+    matrix:
+        - CONDA_PY=2.7
+        - CONDA_PY=3.5
 before_install:
-    - wget http://repo.continuum.io/miniconda/Miniconda-latest-Linux-x86_64.sh -O miniconda.sh
+    - ulimit -n 2048
+    - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then CONDA_FLAVOUR='Linux'; else CONDA_FLAVOUR='MacOSX'; fi;
+    - wget http://repo.continuum.io/miniconda/Miniconda-latest-${CONDA_FLAVOUR}-x86_64.sh -O miniconda.sh;
     - bash miniconda.sh -b -p $HOME/miniconda
     - export PATH="$HOME/miniconda/bin:$PATH"
     - conda update --yes conda
-    - conda create --name test_env --yes python=$TRAVIS_PYTHON_VERSION
+    - conda create --name test_env --yes python=$CONDA_PY
     - source activate test_env
+    - if [[ "$CC" == "gcc" && "$TRAVIS_OS_NAME" == "osx" ]]; then CC=gcc-4.9; CXX=g++-4.9; fi;
     - conda install --yes scipy nose scikit-learn joblib six
+    - $CC --version
 install:
     - python setup.py build_ext --inplace
     - pip install coverage codecov

appveyor.yml

@@ -50,7 +50,7 @@ install:
     - conda install -q  six numpy scikit-learn joblib nose
     - conda install -q -c mwojcikowski mingwpy dlfcn
     - pip install coverage codecov
-    - set "CXX=gcc -pthread"
+    - set "CXX=g++ -pthread"
     - python setup.py build_ext --inplace --compiler=mingw32 -llibdl
 
 build: false