ac_cxx_header_pre_stdcxx

Check whether pre-ISO-C++ headers exist.

AC_DEFUN([AC_CXX_HEADER_PRE_STDCXX], [
  AC_CACHE_CHECK(for pre-ISO C++ include files,
  ac_cv_cxx_pre_stdcxx,
  [AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -Wno-deprecated"

  # Omit defalloc.h, as compilation with newer compilers is problematic.
  AC_TRY_COMPILE([
  #include <new.h>
  #include <iterator.h>
  #include <alloc.h>
  #include <set.h>
  #include <hashtable.h>
  #include <hash_set.h>
  #include <fstream.h>
  #include <tempbuf.h>
  #include <istream.h>
  #include <bvector.h>
  #include <stack.h>
  #include <rope.h>
  #include <complex.h>
  #include <ostream.h>
  #include <heap.h>
  #include <iostream.h>
  #include <function.h>
  #include <multimap.h>
  #include <pair.h>
  #include <stream.h>
  #include <iomanip.h>
  #include <slist.h>
  #include <tree.h>
  #include <vector.h>
  #include <deque.h>
  #include <multiset.h>
  #include <list.h>
  #include <map.h>
  #include <algobase.h>
  #include <hash_map.h>
  #include <algo.h>
  #include <queue.h>
  #include <streambuf.h>
  ],,
  ac_cv_cxx_pre_stdcxx=yes, ac_cv_cxx_pre_stdcxx=no)
  CXXFLAGS="$ac_save_CXXFLAGS"
  AC_LANG_RESTORE
  ])
  if test "$ac_cv_cxx_pre_stdcxx" = yes; then
    AC_DEFINE(PRE_STDCXX_HEADERS,,[Define if pre-ISO C++ header files are present. ])
  fi
])

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