gnulib/import/m4/wmempcpy.m4

   1 # wmempcpy.m4 serial 1
   2 dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([gl_FUNC_WMEMPCPY],
   8 [
   9   AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
  10
  11   dnl Persuade glibc <wchar.h> to declare wmempcpy().
  12   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
  13
  14   dnl The wmempcpy() declaration in lib/wchar.in.h uses 'restrict'.
  15   AC_REQUIRE([AC_C_RESTRICT])
  16
  17   AC_CHECK_FUNCS_ONCE([wmempcpy])
  18   if test $ac_cv_func_wmempcpy = no; then
  19     HAVE_WMEMPCPY=0
  20   fi
  21 ])