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      1 # mempcpy.m4 serial 12
      2 dnl Copyright (C) 2003-2004, 2006-2007, 2009-2022 Free Software Foundation,
      3 dnl Inc.
      4 dnl This file is free software; the Free Software Foundation
      5 dnl gives unlimited permission to copy and/or distribute it,
      6 dnl with or without modifications, as long as this notice is preserved.
      7 
      8 AC_DEFUN([gl_FUNC_MEMPCPY],
      9 [
     10   dnl Persuade glibc <string.h> to declare mempcpy().
     11   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
     12 
     13   dnl The mempcpy() declaration in lib/string.in.h uses 'restrict'.
     14   AC_REQUIRE([AC_C_RESTRICT])
     15 
     16   AC_REQUIRE([gl_STRING_H_DEFAULTS])
     17   AC_CHECK_FUNCS([mempcpy])
     18   if test $ac_cv_func_mempcpy = no; then
     19     HAVE_MEMPCPY=0
     20   fi
     21 ])
     22 
     23 # Prerequisites of lib/mempcpy.c.
     24 AC_DEFUN([gl_PREREQ_MEMPCPY], [
     25   :
     26 ])
     27