src/s/darwin.h

   1 /* System description header file for Darwin (Mac OS X).
   2
   3 Copyright (C) 2001-2012  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software: you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation, either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20
  21 /* Define symbols to identify the version of Unix this is.
  22    Define all the symbols that apply correctly.  */
  23 #define BSD4_2
  24 /* BSD4_3 and BSD4_4 are already defined in sys/param.h */
  25 #define BSD_SYSTEM
  26
  27 /* More specific than the above two.  We cannot use __APPLE__ as this
  28    may not be defined on non-OSX Darwin, and we cannot define DARWIN
  29    here because Panther and lower CoreFoundation.h uses DARWIN to
  30    distinguish OS X from pure Darwin.  */
  31 #define DARWIN_OS
  32
  33 /* PTYs only work correctly on Darwin 7 or higher.  So make the default
  34    for process-connection-type dependent on the kernel version.  */
  35 #define MIN_PTY_KERNEL_VERSION '7'
  36
  37 /* Definitions for how to compile & link.  */
  38 #ifdef emacs
  39 #define malloc unexec_malloc
  40 #define realloc unexec_realloc
  41 #define free unexec_free
  42 /* Don't use posix_memalign because it is not compatible with unexmacosx.c.  */
  43 #undef HAVE_POSIX_MEMALIGN
  44 #endif
  45
  46 /* The following solves the problem that Emacs hangs when evaluating
  47    (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile
  48    does not exist.  Also, setsid is not allowed in the vfork child's
  49    context as of Darwin 9/Mac OS X 10.5.  */
  50 #undef HAVE_WORKING_VFORK
  51 #define vfork fork