realloc.m4

来自「制作2.6内核的CLFS时 patch包」· M4 代码 · 共 26 行

# realloc.m4 serial 7
dnl Copyright (C) 2002 Free Software Foundation, Inc.
dnl This file is free software, distributed under the terms of the GNU
dnl General Public License.  As a special exception to the GNU General
dnl Public License, this file may be distributed as part of a program
dnl that contains a configuration script generated by Autoconf, under
dnl the same distribution terms as the rest of that program.

dnl From Jim Meyering.
dnl Determine whether realloc works when both arguments are 0.
dnl If it doesn't, arrange to use the replacement function.

AC_DEFUN([jm_FUNC_REALLOC],
[
  AC_REQUIRE([AC_FUNC_REALLOC])
  dnl autoconf < 2.57 used the symbol ac_cv_func_realloc_works.
  if test X"$ac_cv_func_realloc_0_nonnull" = Xno || test X"$ac_cv_func_realloc_works" = Xno; then
    gl_PREREQ_REALLOC
  fi
])

# Prerequisites of lib/realloc.c.
AC_DEFUN([gl_PREREQ_REALLOC], [
  :
])