1# wmempcpy.m4 serial 1 2dnl Copyright (C) 2020-2021 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7AC_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]) 22