gcc/config/lynx.h

   1 /* Target independent definitions for LynxOS.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1999, 2000, 2002, 2003, 2004
   3    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 2, 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 COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 /* In this file we set up defaults that can be chosen by
  23    <target>/lynx.h files.  A target-specific lynx.h file can decide
  24    either to define and override these definitions or to use them by
  25    ensuring they are undefined at this point.  If we were to #undef
  26    them here we might accidentally disable some target-specific
  27    defines.  */
  28
  29 #ifndef EXTRA_OS_LYNX_TARGET_SPECS
  30 # define EXTRA_OS_LYNX_TARGET_SPECS
  31 #endif
  32
  33 #ifndef EXTRA_OS_LYNX_SPECS
  34 # define EXTRA_OS_LYNX_SPECS \
  35   { "cpp_os_lynx", CPP_OS_LYNX_SPEC }, \
  36   { "lib_os_lynx", LIB_OS_LYNX_SPEC }, \
  37   { "link_os_lynx", LINK_OS_LYNX_SPEC }, \
  38   { "startfile_os_lynx", STARTFILE_OS_LYNX_SPEC }, \
  39   { "endfile_os_lynx", ENDFILE_OS_LYNX_SPEC }, \
  40   EXTRA_OS_LYNX_TARGET_SPECS
  41 #endif
  42
  43 #ifndef SUBTARGET_EXTRA_SPECS
  44 # define SUBTARGET_EXTRA_SPECS EXTRA_OS_LYNX_SPECS
  45 #endif
  46
  47 #ifndef CPP_SPEC
  48 # define CPP_SPEC "%(cpp_cpu) %(cpp_os_lynx)"
  49 #endif
  50
  51 #ifndef LIB_SPEC
  52 # define LIB_SPEC "%(lib_os_lynx)"
  53 #endif
  54
  55 #ifndef LINK_SPEC
  56 # define LINK_SPEC "%(link_os_lynx)"
  57 #endif
  58
  59 #ifndef STARTFILE_SPEC
  60 # define STARTFILE_SPEC "%(startfile_os_lynx)"
  61 #endif
  62
  63 #ifndef ENDFILE_SPEC
  64 # define ENDFILE_SPEC "%(endfile_os_lynx)"
  65 #endif
  66
  67 #ifndef CPP_OS_LYNX_SPEC
  68 # define CPP_OS_LYNX_SPEC \
  69 "%{mthreads: \
  70    %{mlegacy-threads: \
  71      %eCannot use mthreads and mlegacy-threads together.}} \
  72  %{mthreads: -D_MULTITHREADED} \
  73  %{mlegacy-threads: -D_THREADS_POSIX4ad4} \
  74  -Asystem=lynx -Asystem=unix -D__Lynx__ -D__unix__"
  75 #endif
  76
  77 #ifndef LIB_OS_LYNX_SPEC
  78 # define LIB_OS_LYNX_SPEC \
  79 "%{mlegacy-threads:-lposix-pre1c} -lm -lc"
  80 #endif
  81
  82 /* We link static executables for LynxOS by default unless -mshared is
  83    used when linking an executable.  Along the same line, we link to
  84    shared libraries when linking a shared object by default unless
  85    -static is used.
  86
  87    We have to pass in our -L options here otherwise the translated
  88    startfile directories (%D) will take priority over this.
  89    Furthermore since we have to pass in -L options here we have to
  90    make sure that -L options provided by the user take priority over
  91    everything we specify.  */
  92
  93 #ifndef LINK_OS_LYNX_SPEC
  94 # define LINK_OS_LYNX_SPEC \
  95 "%{shared} %{static} \
  96  %{mshared: %{static: %eCannot use mshared and static together.}} \
  97  %{!mshared: %{!shared: %{!static: -static}}} \
  98  %{L*} \
  99  %{mthreads: \
 100    %{mshared: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
 101    %{shared: \
 102      %{!static: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
 103    %{!mshared: -L/lib/thread}} \
 104    %{shared: %{static: -L/lib/thread}}} \
 105  %{!mthreads: \
 106    %{mshared: -L/lib/shlib -rpath /lib/shlib} \
 107    %{shared: -L/lib/shlib -rpath /lib/shlib}} \
 108  %{mlegacy-threads:-lposix-pre1c} -lm -lc"
 109 #endif
 110
 111 #ifndef STARTFILE_OS_LYNX_SPEC
 112 # define STARTFILE_OS_LYNX_SPEC \
 113 "%{!shared: \
 114    %{!mthreads: \
 115      %{p:gcrt1.o%s} %{pg:gcrt1.o%s} \
 116      %{!p:%{!pg:crt1.o%s}}} \
 117    %{mthreads: \
 118      %{p:thread/gcrt1.o%s} %{pg:thread/gcrt1.o%s} \
 119      %{!p:%{!pg:thread/crt1.o%s }}}}\
 120  %{mthreads: thread/crti.o%s} %{!mthreads: crti.o%s} \
 121  %{!shared: crtbegin.o%s} \
 122  %{shared: crtbeginS.o%s}"
 123 #endif
 124
 125 #ifndef ENDFILE_OS_LYNX_SPEC
 126 # define ENDFILE_OS_LYNX_SPEC \
 127 "%{!shared: crtend.o%s} \
 128  %{shared: crtendS.o%s} \
 129  %{mthreads: thread/crtn.o%s} %{!mthreads: crtn.o%s}"
 130 #endif
 131
 132 /* Because of the %{m*} in cc1_options these options get substituted
 133    for cc1.  We ignore them here.  */
 134
 135 #ifndef SUBTARGET_OS_LYNX_SWITCHES
 136 # define SUBTARGET_OS_LYNX_SWITCHES                             \
 137   { "shared",           0, N_("Use shared libraries") },        \
 138   { "threads",          0, N_("Support multi-threading") },     \
 139   { "legacy-threads",   0, N_("Support legacy multi-threading") },
 140 #endif
 141
 142 #ifndef SUBTARGET_SWITCHES
 143 # define SUBTARGET_SWITCHES SUBTARGET_OS_LYNX_SWITCHES
 144 #endif
 145
 146 /* Define the actual types of some ANSI-mandated types.  */
 147
 148 #ifndef SIZE_TYPE
 149 # define SIZE_TYPE "unsigned int"
 150 #endif
 151
 152 #ifndef  PTRDIFF_TYPE
 153 # define PTRDIFF_TYPE "int"
 154 #endif
 155
 156 #ifndef  WCHAR_TYPE
 157 # define WCHAR_TYPE "long int"
 158 #endif
 159
 160 #ifndef  WCHAR_TYPE_SIZE
 161 # define WCHAR_TYPE_SIZE BITS_PER_WORD
 162 #endif
 163
 164 /* Define ASM_OUTPUT_ALIGN to use the .balign directive rather that
 165    the .align directive with GAS.  */
 166
 167 #ifndef ASM_OUTPUT_ALIGN
 168 # define ASM_OUTPUT_ALIGN(FILE, LOG)                    \
 169   do                                                    \
 170     {                                                   \
 171       if ((LOG) != 0)                                   \
 172         fprintf ((FILE), "\t.balign %d\n", 1 << (LOG)); \
 173     }                                                   \
 174   while (0)
 175 #endif
 176
 177 /* Keep the *_DEBUGGING_INFO defines from elfos.h except that stabs is
 178    the default on LynxOS.  */
 179
 180 #ifndef PREFERRED_DEBUGGING_TYPE
 181 # define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 182 #endif
 183
 184 /* We have C++ support in our system headers.  */
 185
 186 #ifndef NO_IMPLICIT_EXTERN_C
 187 # define NO_IMPLICIT_EXTERN_C
 188 #endif
 189
 190 #ifndef TARGET_HAS_F_SETLKW
 191 # define TARGET_HAS_F_SETLKW
 192 #endif