gcc/config/lynx.h

   1 /* Target independent definitions for LynxOS.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1999, 2000, 2002, 2003, 2004,
   3    2007 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC 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, or (at your option)
  10 any later version.
  11
  12 GCC 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 GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 /* In this file we set up defaults that can be chosen by
  22    <target>/lynx.h files.  A target-specific lynx.h file can decide
  23    either to define and override these definitions or to use them by
  24    ensuring they are undefined at this point.  If we were to #undef
  25    them here we might accidentally disable some target-specific
  26    defines.  */
  27
  28 #ifndef EXTRA_OS_LYNX_TARGET_SPECS
  29 # define EXTRA_OS_LYNX_TARGET_SPECS
  30 #endif
  31
  32 #ifndef EXTRA_OS_LYNX_SPECS
  33 # define EXTRA_OS_LYNX_SPECS \
  34   { "cpp_os_lynx", CPP_OS_LYNX_SPEC }, \
  35   { "lib_os_lynx", LIB_OS_LYNX_SPEC }, \
  36   { "link_os_lynx", LINK_OS_LYNX_SPEC }, \
  37   { "startfile_os_lynx", STARTFILE_OS_LYNX_SPEC }, \
  38   { "endfile_os_lynx", ENDFILE_OS_LYNX_SPEC }, \
  39   EXTRA_OS_LYNX_TARGET_SPECS
  40 #endif
  41
  42 #ifndef SUBTARGET_EXTRA_SPECS
  43 # define SUBTARGET_EXTRA_SPECS EXTRA_OS_LYNX_SPECS
  44 #endif
  45
  46 #ifndef CPP_SPEC
  47 # define CPP_SPEC "%(cpp_cpu) %(cpp_os_lynx)"
  48 #endif
  49
  50 #ifndef LIB_SPEC
  51 # define LIB_SPEC "%(lib_os_lynx)"
  52 #endif
  53
  54 #ifndef LINK_SPEC
  55 # define LINK_SPEC "%(link_os_lynx)"
  56 #endif
  57
  58 #ifndef STARTFILE_SPEC
  59 # define STARTFILE_SPEC "%(startfile_os_lynx)"
  60 #endif
  61
  62 #ifndef ENDFILE_SPEC
  63 # define ENDFILE_SPEC "%(endfile_os_lynx)"
  64 #endif
  65
  66 #ifndef CPP_OS_LYNX_SPEC
  67 # define CPP_OS_LYNX_SPEC \
  68 "%{mthreads: \
  69    %{mlegacy-threads: \
  70      %ecannot use mthreads and mlegacy-threads together}} \
  71  %{mthreads: -D_MULTITHREADED} \
  72  %{mlegacy-threads: -D_THREADS_POSIX4ad4} \
  73  -Asystem=lynx -Asystem=unix -D__Lynx__ -D__unix__"
  74 #endif
  75
  76 #ifndef LIB_OS_LYNX_SPEC
  77 # define LIB_OS_LYNX_SPEC \
  78 "%{mlegacy-threads:-lposix-pre1c} -lm -lc"
  79 #endif
  80
  81 /* We link static executables for LynxOS by default unless -mshared is
  82    used when linking an executable.  Along the same line, we link to
  83    shared libraries when linking a shared object by default unless
  84    -static is used.
  85
  86    We have to pass in our -L options here otherwise the translated
  87    startfile directories (%D) will take priority over this.
  88    Furthermore since we have to pass in -L options here we have to
  89    make sure that -L options provided by the user take priority over
  90    everything we specify.  */
  91
  92 #ifndef LINK_OS_LYNX_SPEC
  93 # define LINK_OS_LYNX_SPEC \
  94 "%{shared} %{static} \
  95  %{mshared: %{static: %ecannot use mshared and static together}} \
  96  %{!mshared: %{!shared: %{!static: -static}}} \
  97  %{L*} \
  98  %{mthreads: \
  99    %{mshared: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
 100    %{shared: \
 101      %{!static: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
 102    %{!mshared: -L/lib/thread}} \
 103    %{shared: %{static: -L/lib/thread}}} \
 104  %{!mthreads: \
 105    %{mshared: -L/lib/shlib -rpath /lib/shlib} \
 106    %{shared: -L/lib/shlib -rpath /lib/shlib}} \
 107  %{mlegacy-threads:-lposix-pre1c} -lm -lc"
 108 #endif
 109
 110 #ifndef STARTFILE_OS_LYNX_SPEC
 111 # define STARTFILE_OS_LYNX_SPEC \
 112 "%{!shared: \
 113    %{!mthreads: \
 114      %{p:gcrt1.o%s} %{pg:gcrt1.o%s} \
 115      %{!p:%{!pg:crt1.o%s}}} \
 116    %{mthreads: \
 117      %{p:thread/gcrt1.o%s} %{pg:thread/gcrt1.o%s} \
 118      %{!p:%{!pg:thread/crt1.o%s }}}}\
 119  %{mthreads: thread/crti.o%s} %{!mthreads: crti.o%s} \
 120  %{!shared: crtbegin.o%s} \
 121  %{shared: crtbeginS.o%s}"
 122 #endif
 123
 124 #ifndef ENDFILE_OS_LYNX_SPEC
 125 # define ENDFILE_OS_LYNX_SPEC \
 126 "%{!shared: crtend.o%s} \
 127  %{shared: crtendS.o%s} \
 128  %{mthreads: thread/crtn.o%s} %{!mthreads: crtn.o%s}"
 129 #endif
 130
 131 /* Define the actual types of some ANSI-mandated types.  */
 132
 133 #ifndef SIZE_TYPE
 134 # define SIZE_TYPE "unsigned int"
 135 #endif
 136
 137 #ifndef  PTRDIFF_TYPE
 138 # define PTRDIFF_TYPE "int"
 139 #endif
 140
 141 #ifndef  WCHAR_TYPE
 142 # define WCHAR_TYPE "long int"
 143 #endif
 144
 145 #ifndef  WCHAR_TYPE_SIZE
 146 # define WCHAR_TYPE_SIZE BITS_PER_WORD
 147 #endif
 148
 149 /* Define ASM_OUTPUT_ALIGN to use the .balign directive rather that
 150    the .align directive with GAS.  */
 151
 152 #ifndef ASM_OUTPUT_ALIGN
 153 # define ASM_OUTPUT_ALIGN(FILE, LOG)                    \
 154   do                                                    \
 155     {                                                   \
 156       if ((LOG) != 0)                                   \
 157         fprintf ((FILE), "\t.balign %d\n", 1 << (LOG)); \
 158     }                                                   \
 159   while (0)
 160 #endif
 161
 162 /* Keep the *_DEBUGGING_INFO defines from elfos.h except that stabs is
 163    the default on LynxOS.  */
 164
 165 #ifndef PREFERRED_DEBUGGING_TYPE
 166 # define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 167 #endif
 168
 169 /* We have C++ support in our system headers.  */
 170
 171 #ifndef NO_IMPLICIT_EXTERN_C
 172 # define NO_IMPLICIT_EXTERN_C
 173 #endif
 174
 175 #ifndef TARGET_POSIX_IO
 176 # define TARGET_POSIX_IO
 177 #endif