xref: /Universal-ctags/m4/strnlen.m4 (revision a939078a69878851c19820eb92e6cb95ba429546)
1*a939078aSHiroo HAYASHI# strnlen.m4 serial 14
2*a939078aSHiroo HAYASHIdnl Copyright (C) 2002-2003, 2005-2007, 2009-2021 Free Software Foundation,
3*a939078aSHiroo HAYASHIdnl Inc.
4*a939078aSHiroo HAYASHIdnl This file is free software; the Free Software Foundation
5*a939078aSHiroo HAYASHIdnl gives unlimited permission to copy and/or distribute it,
6*a939078aSHiroo HAYASHIdnl with or without modifications, as long as this notice is preserved.
7*a939078aSHiroo HAYASHI
8*a939078aSHiroo HAYASHIAC_DEFUN([gl_FUNC_STRNLEN],
9*a939078aSHiroo HAYASHI[
10*a939078aSHiroo HAYASHI  AC_REQUIRE([gl_STRING_H_DEFAULTS])
11*a939078aSHiroo HAYASHI
12*a939078aSHiroo HAYASHI  dnl Persuade glibc <string.h> to declare strnlen().
13*a939078aSHiroo HAYASHI  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
14*a939078aSHiroo HAYASHI
15*a939078aSHiroo HAYASHI  AC_CHECK_DECLS_ONCE([strnlen])
16*a939078aSHiroo HAYASHI  if test $ac_cv_have_decl_strnlen = no; then
17*a939078aSHiroo HAYASHI    HAVE_DECL_STRNLEN=0
18*a939078aSHiroo HAYASHI  else
19*a939078aSHiroo HAYASHI    m4_pushdef([AC_LIBOBJ], [:])
20*a939078aSHiroo HAYASHI    dnl Note: AC_FUNC_STRNLEN does AC_LIBOBJ([strnlen]).
21*a939078aSHiroo HAYASHI    AC_FUNC_STRNLEN
22*a939078aSHiroo HAYASHI    m4_popdef([AC_LIBOBJ])
23*a939078aSHiroo HAYASHI    if test $ac_cv_func_strnlen_working = no; then
24*a939078aSHiroo HAYASHI      REPLACE_STRNLEN=1
25*a939078aSHiroo HAYASHI    fi
26*a939078aSHiroo HAYASHI  fi
27*a939078aSHiroo HAYASHI])
28*a939078aSHiroo HAYASHI
29*a939078aSHiroo HAYASHI# Prerequisites of lib/strnlen.c.
30*a939078aSHiroo HAYASHIAC_DEFUN([gl_PREREQ_STRNLEN], [:])
31