wxWidgets: ./configure --enable-monolithic --with-osx_cocoa --with-macosx-version-min=10.7 --with-opengl CC=clang CXX=clang++ CXXFLAGS="-stdlib=libc++ -std=c++11" OBJCXXFLAGS="-stdlib=libc++ -std=c++11" LDFLAGS=-stdlib=libc++