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# ===========================================================================
# http://www.nongnu.org/autoconf-archive/ax_cxx_dtor_after_atexit.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CXX_DTOR_AFTER_ATEXIT
#
# DESCRIPTION
#
# 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.
#
# LICENSE
#
# Copyright (c) 2008 Todd Veldhuizen
# Copyright (c) 2008 Luc Maisonobe <luc@spaceroots.org>
#
# 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.
AU_ALIAS([AC_CXX_DTOR_AFTER_ATEXIT], [AX_CXX_DTOR_AFTER_ATEXIT])
AC_DEFUN([AX_CXX_DTOR_AFTER_ATEXIT],
[AC_CACHE_CHECK(whether the compiler calls global destructors after functions registered through atexit,
ax_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;
}
],
ax_cv_cxx_dtor_after_atexit=yes, ax_cv_cxx_dtor_after_atexit=yes=no,
ax_cv_cxx_dtor_after_atexit=yes)
AC_LANG_RESTORE
])
if test "$ax_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
])
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