code.delx.au - gnu-emacs/blob - src/s/freebsd.h

   1 /* System description header for FreeBSD systems.
   2    This file describes the parameters that system description files
   3    should define or not.
   4    Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   5                  2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
   6                  Free Software Foundation, Inc.
   7
   8 Author: Shawn M. Carey
   9 (according to authors.el)
  10
  11 This file is part of GNU Emacs.
  12
  13 GNU Emacs is free software: you can redistribute it and/or modify
  14 it under the terms of the GNU General Public License as published by
  15 the Free Software Foundation, either version 3 of the License, or
  16 (at your option) any later version.
  17
  18 GNU Emacs is distributed in the hope that it will be useful,
  19 but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 GNU General Public License for more details.
  22
  23 You should have received a copy of the GNU General Public License
  24 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  25
  26 /* Get most of the stuff from bsd-common */
  27 #include "bsd-common.h"
  28
  29 /* For mem-limits.h. */
  30 #define BSD4_2
  31
  32 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base)
  33
  34 #define LIBS_SYSTEM -lutil
  35 #if __FreeBSD_version < 400000
  36 #define LIBS_TERMCAP -ltermcap
  37 #else
  38 #define TERMINFO
  39 #define LIBS_TERMCAP -lncurses
  40 #endif
  41
  42 /* Let `ld' find image libs and similar things in /usr/local/lib.  The
  43    system compiler, GCC, has apparently been modified to not look
  44    there, contrary to what a stock GCC would do.  */
  45
  46 #define LD_SWITCH_SYSTEM  -L/usr/local/lib
  47 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o /usr/lib/crtbegin.o
  48 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtend.o /usr/lib/crtn.o
  49 #undef LIB_GCC
  50 #define LIB_GCC
  51
  52 #define HAVE_GETLOADAVG 1
  53 #define DECLARE_GETPWUID_WITH_UID_T
  54
  55 /* this silences a few compilation warnings */
  56 #undef BSD_SYSTEM
  57 #if __FreeBSD__ == 1
  58 #define BSD_SYSTEM 199103
  59 #elif __FreeBSD__ == 2
  60 #define BSD_SYSTEM 199306
  61 #elif __FreeBSD__ >= 3
  62 #define BSD_SYSTEM 199506
  63 #endif
  64
  65 /* Don't close pty in process.c to make it as controlling terminal.
  66    It is already a controlling terminal of subprocess, because we did
  67    ioctl TIOCSCTTY.  */
  68 #define DONT_REOPEN_PTY
  69
  70 /* The following is needed to make `configure' find Xpm, Xaw3d and
  71    image include and library files if using /usr/bin/gcc.  That
  72    compiler seems to be modified to not find headers in
  73    /usr/local/include or libs in /usr/local/lib by default.  */
  74
  75 #define C_SWITCH_SYSTEM -I/usr/X11R6/include -I/usr/local/include -L/usr/local/lib
  76
  77 /* Circumvent a bug in FreeBSD.  In the following sequence of
  78    writes/reads on a PTY, read(2) returns bogus data:
  79
  80    write(2)  1022 bytes
  81    write(2)   954 bytes, get EAGAIN
  82    read(2)   1024 bytes in process_read_output
  83    read(2)     11 bytes in process_read_output
  84
  85    That is, read(2) returns more bytes than have ever been written
  86    successfully.  The 1033 bytes read are the 1022 bytes written
  87    successfully after processing (for example with CRs added if the
  88    terminal is set up that way which it is here).  The same bytes will
  89    be seen again in a later read(2), without the CRs.  */
  90
  91 #define BROKEN_PTY_READ_AFTER_EAGAIN 1
  92
  93 /* Tell that garbage collector that setjmp is known to save all
  94    registers relevant for conservative garbage collection in the
  95    jmp_buf.  */
  96
  97 #define GC_SETJMP_WORKS 1
  98
  99 /* Use the GC_MAKE_GCPROS_NOOPS (see lisp.h) method for marking the
 100    stack.  */
 101
 102 #define GC_MARK_STACK   GC_MAKE_GCPROS_NOOPS
 103
 104 /* Define USE_MMAP_FOR_BUFFERS to let Emacs use mmap(2) to allocate
 105    buffer text.  This overrides REL_ALLOC.  */
 106
 107 #define USE_MMAP_FOR_BUFFERS    1
 108
 109 /* Use sigprocmask(2) and friends instead of sigblock(2); the man page
 110    of sigblock says it is obsolete.  */
 111
 112 #define POSIX_SIGNALS           1
 113
 114 /* The `combreloc' setting became the default, and it seems to be
 115    incompatible with unexec.  Symptom is an immediate SEGV in
 116    XtInitializeWidget when starting Emacs under X11.  */
 117
 118 #if defined __FreeBSD_version && __FreeBSD_version >= 500042
 119 #define LD_SWITCH_SYSTEM_TEMACS -znocombreloc
 120 #endif
 121
 122 /* arch-tag: 426529ca-b7c4-448f-b10a-d4dcdc9c78eb
 123    (do not change this comment) */