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generated...
2007-08-05

(C) 2007 guidod
Download the M4 Source.

ac_cxx_have_long_long_for_iostream

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Synopsis
AC_CXX_HAVE_LONG_LONG_FOR_IOSTREAM
,
Version

2002-09-04

Author

Alain BARBET <alian@cpan.org>

License

GPLWithACException
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation. As a special exception, the respective Autoconf Macro's copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts

Category

cryp.to ac-archive's C++ Support (released)

Documentation

Check if the compiler allow long long for [i|o]stream Seems that OpenBSD / gcc-3 don't have it.

Eg: 

 #include <iostream>
 #ifdef HAVE_SSTREAM
 #include <strstream>
 #else
 #include <sstream>
 #endif
 #ifdef HAVE_NAMESPACES
 using namespace std;
 #endif
 ostream str((streambuf *)0);
 long long lo=1;
 str <<
 #ifdef HAVE_LONG_LONG_FOR_IOSTREAM
   (long int)
 #endif
         lo;

M4 Source Code
AC_DEFUN([AC_CXX_HAVE_LONG_LONG_FOR_IOSTREAM],
[AC_CACHE_CHECK(whether the compiler allow long long for [i|o]stream,
ac_cv_cxx_have_ll_for_iostream,
[AC_REQUIRE([AC_CXX_NAMESPACES])
  AC_REQUIRE([AC_CXX_HAVE_SSTREAM])
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_COMPILE([#include &lt;iostream&gt;
#ifdef HAVE_SSTREAM
#include &lt;strstream&gt;
#else
#include &lt;sstream&gt;
#endif
#ifdef HAVE_NAMESPACES
using namespace std;
#endif],[ ostream str((streambuf *)0); long long l=1; str &lt;&lt; l; return 0;],
  ac_cv_cxx_have_ll_for_iostream=yes, ac_cv_cxx_have_ll_for_iostream=no)
  AC_LANG_RESTORE
])
if test "$ac_cv_cxx_have_ll_for_iostream" = yes; then
   AC_DEFINE(HAVE_LONG_LONG_FOR_IOSTREAM,,[define if the compiler allow long long for [i|o]stream])
fi
])