emacs/m4/explicit_bzero.m4

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dnl Copyright 2017-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_EXPLICIT_BZERO],
[
AC_REQUIRE([gl_STRING_H_DEFAULTS])
dnl Persuade glibc <string.h> to declare explicit_bzero.
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
AC_CHECK_FUNCS_ONCE([explicit_bzero])
if test $ac_cv_func_explicit_bzero = no; then
HAVE_EXPLICIT_BZERO=0
fi
])
AC_DEFUN([gl_PREREQ_EXPLICIT_BZERO],
[
AC_CHECK_FUNCS([explicit_memset])
AC_CHECK_FUNCS_ONCE([memset_s])
])