dnl @
synopsis AC_CXX_HAVE_STRSTREAM
dnl
        dnl
If the
C++
library has
a working
strstream,
define HAVE_CLASS_STRSTREAM
.
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        dnl
Adapted from
ac_cxx_have_sstream.
m4 by
Steve Robbins
dnl
        AC_DEFUN([AC_CXX_HAVE_STRSTREAM],
[AC_REQUIRE([AC_CXX_NAMESPACES])
AC_LANG_SAVE
        AC_LANG_CPLUSPLUS
AC_CHECK_HEADERS(strstream)
AC_CACHE_CHECK([
whether the
STL defines
strstream],
[ac_cv_cxx_have_class_strstream],
[AC_TRY_COMPILE([#if
HAVE_STRSTREAM

#  include <strstream>

#else

#  include <strstream.h>

#endif
#ifdef HAVE_NAMESPACES
using namespace std;
#endif],[ostrstream message; message << "Hello"; return 0;],
        ac_cv_cxx_have_class_strstream = yes, ac_cv_cxx_have_class_strstream = no
)
])
if test "$ac_cv_cxx_have_class_strstream" =
yes;
then
        AC_DEFINE(HAVE_CLASS_STRSTREAM, 1,[define
if
the library
defines strstream
])
fi
        AC_LANG_RESTORE
])