Fixing installation for OSX

configure.ac

@@ -182,9 +182,11 @@ AC_MSG_CHECKING([whether CXX supports -fext-numeric-literals])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
     [AC_MSG_RESULT([yes])
      AM_CXXFLAGS="-fext-numeric-literals"
+     echo "-fext-numeric-literals" > openfpm_flags
     ],
     [
      AC_MSG_RESULT([no])
+     echo "" > openfpm_flags
     ]
 )
 AC_LANG_POP([C++])

install

@@ -308,7 +308,7 @@ fi
 
 ### Create example.mk
 install_base=$(cat install_dir)
-openmp_flags=$(cat openmp_flags)
+openmp_flags=$(cat openmp_flags) $(cat openfpm_flags)
 echo "INCLUDE_PATH= $openmp_flags  -I. -I$install_base/openfpm_numerics/include -I$install_base/openfpm_pdata/include/config -I$install_base/openfpm_pdata/include -I$install_base/openfpm_data/include -I$install_base/openfpm_vcluster/include -I$install_base/openfpm_io/include -I$install_base/openfpm_devices/include -I$i_dir/METIS/include -I$i_dir/PARMETIS/include -I$i_dir/BOOST/include -I$i_dir/HDF5/include -I$i_dir/LIBHILBERT/include  $lin_alg_inc" > example.mk
 echo "LIBS_PATH= $openmp_flags -L$install_base/openfpm_devices/lib -L$install_base/openfpm_pdata/lib  -L$install_base/openfpm_vcluster/lib -L$i_dir/METIS/lib -L$i_dir/PARMETIS/lib  -L$i_dir/BOOST/lib -L$i_dir/HDF5/lib -L$i_dir/LIBHILBERT/lib  $lin_alg_dir" >> example.mk
 echo "LIBS=-lvcluster -lofpm_pdata -lofpmmemory -lparmetis -lmetis -lboost_iostreams -lhdf5 -llibhilbert  $lin_alg_lib" >> example.mk