AC_CXX_DTOR_AFTER_ATEXIT
, 
, 

2004-02-04

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 C++ compiler calls global destructors after atexit functions, define HAVE_DTOR_AFTER_ATEXIT. WARNING: If cross-compiling, the test cannot be performed, the default action is to define HAVE_DTOR_AFTER_ATEXIT.

AC_DEFUN([AC_CXX_DTOR_AFTER_ATEXIT],
[AC_CACHE_CHECK(whether the compiler calls global destructors after functions registered through atexit,
ac_cv_cxx_dtor_after_atexit,
[AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 AC_TRY_RUN([
#include <unistd.h>
#include <stdlib.h>

static int dtor_called = 0;
class A { public : ~A () { dtor_called = 1; } };
static A a;

void f() { _exit(dtor_called); }

int main (int , char **)
{
  atexit (f);
  return 0;
}
],
 ac_cv_cxx_dtor_after_atexit=yes, ac_cv_cxx_dtor_after_atexit=yes=no,
 ac_cv_cxx_dtor_after_atexit=yes)
 AC_LANG_RESTORE
])
if test "$ac_cv_cxx_dtor_after_atexit" = yes; then
  AC_DEFINE(HAVE_DTOR_AFTER_ATEXIT,,
            [define if the compiler calls global destructors after functions registered through atexit])
fi
])