point to gfortran location for RcppEigen

Author: cdeterman

.travis.yml

@@ -28,6 +28,7 @@ before_install:
   - sudo apt-get install -qq g++-4.8
   - export CXX="g++-4.8"
   - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 90
+  - sudo ln -s /usr/lib/x86_64-linux-gnu/libgfortran.so.3 /usr/lib/libgfortran.so
   - cd /usr/include
   - sudo mkdir CL 
   - cd ~