1 dnl AX_CHECK_SSTREAM - check if local sstream is needed to compile OK 2 AC_DEFUN([AX_CHECK_SSTREAM], 3 [ 4 AC_MSG_CHECKING([whether to use included sstream]) 5 AC_TRY_COMPILE([#include <sstream>], [], 6 AC_MSG_RESULT([no]);, 7 AC_MSG_RESULT([yes]); OP_CXXFLAGS="$OP_CXXFLAGS -I\${top_srcdir}/include") 8 ] 9 ) 10