malloc.m4

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

# malloc.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 malloc accepts 0 as its argument.
dnl If it doesn't, arrange to use the replacement function.

AC_DEFUN([jm_FUNC_MALLOC],
[
  AC_REQUIRE([AC_FUNC_MALLOC])
  dnl autoconf < 2.57 used the symbol ac_cv_func_malloc_works.
  if test X"$ac_cv_func_malloc_0_nonnull" = Xno || test X"$ac_cv_func_malloc_works" = Xno; then
    gl_PREREQ_MALLOC
  fi
])

# Prerequisites of lib/malloc.c.
AC_DEFUN([gl_PREREQ_MALLOC], [
  :
])