sysdeps/generic/dl-sysdep.h

   1 /* System-specific settings for dynamic linker code.  Generic version.
   2    Copyright (C) 2002-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 /* No multiple inclusion protection need here because it's just macros.
  20    We don't want to use _DL_SYSDEP_H in case we are #include_next'd.  */
  21
  22 /* This macro must be defined to either 0 or 1.
  23
  24    If 1, then an errno global variable hidden in ld.so will work right with
  25    all the errno-using libc code compiled for ld.so, and there is never a
  26    need to share the errno location with libc.  This is appropriate only if
  27    all the libc functions that ld.so uses are called without PLT and always
  28    get the versions linked into ld.so rather than the libc ones.  */
  29
  30 #if IS_IN (rtld)
  31 # define RTLD_PRIVATE_ERRNO 1
  32 #else
  33 # define RTLD_PRIVATE_ERRNO 0
  34 #endif