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AC_CXX_HAVE_LONG_LONG_FOR_IOSTREAM
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;
$2.0 09/04/2002$
Alain BARBET <alian@cpan.org>
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 <iostream> #ifdef HAVE_SSTREAM #include <strstream> #else #include <sstream> #endif #ifdef HAVE_NAMESPACES using namespace std; #endif],[ ostream str((streambuf *)0); long long l=1; str << 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 ])