AC_CXX_NEW_FOR_SCOPING
, 
, 

2004年02月04日

Todd Veldhuizen Luc Maisonobe <luc@spaceroots.org>

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Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. Users of this software should generally follow the principles of the MIT License includings its disclaimer.

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

If the compiler accepts the new for scoping rules (the scope of a variable declared inside the parentheses is restricted to the for-body), define HAVE_NEW_FOR_SCOPING.

AC_DEFUN([AC_CXX_NEW_FOR_SCOPING],
[AC_CACHE_CHECK(whether the compiler accepts the new for scoping rules,
ac_cv_cxx_new_for_scoping,
[AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 AC_TRY_COMPILE(,[
 int z = 0;
 for (int i = 0; i < 10; ++i)
 z = z + i;
 for (int i = 0; i < 10; ++i)
 z = z - i;
 return z;],
 ac_cv_cxx_new_for_scoping=yes, ac_cv_cxx_new_for_scoping=no)
 AC_LANG_RESTORE
])
if test "$ac_cv_cxx_new_for_scoping" = yes; then
 AC_DEFINE(HAVE_NEW_FOR_SCOPING,,[define if the compiler accepts the new for scoping rules])
fi
])