Disable CXXFLAGS="-stdlib=libc++"; for mac

Author: anaegel

.travis.yml

@@ -55,7 +55,7 @@ before_install:
   # installing ccache and freetype packages via homebrew
 #  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install ccache; fi
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then export PATH="/usr/local/opt/ccache/libexec:$PATH"; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then export CXXFLAGS="-stdlib=libc++"; fi
+#  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then export CXXFLAGS="-stdlib=libc++"; fi
 
 # prepare compilation  
 before_script: