gcc/config/lynx.h

   1 /* Target independent definitions for LynxOS.
   2    Copyright (C) 1993-2018 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 /* In this file we set up defaults that can be chosen by
  21    <target>/lynx.h files.  A target-specific lynx.h file can decide
  22    either to define and override these definitions or to use them by
  23    ensuring they are undefined at this point.  If we were to #undef
  24    them here we might accidentally disable some target-specific
  25    defines.  */
  26
  27 #ifndef EXTRA_OS_LYNX_TARGET_SPECS
  28 # define EXTRA_OS_LYNX_TARGET_SPECS
  29 #endif
  30
  31 #ifndef EXTRA_OS_LYNX_SPECS
  32 # define EXTRA_OS_LYNX_SPECS \
  33   { "cpp_os_lynx", CPP_OS_LYNX_SPEC }, \
  34   { "lib_os_lynx", LIB_OS_LYNX_SPEC }, \
  35   { "link_os_lynx", LINK_OS_LYNX_SPEC }, \
  36   { "startfile_os_lynx", STARTFILE_OS_LYNX_SPEC }, \
  37   { "endfile_os_lynx", ENDFILE_OS_LYNX_SPEC }, \
  38   EXTRA_OS_LYNX_TARGET_SPECS
  39 #endif
  40
  41 #ifndef SUBTARGET_EXTRA_SPECS
  42 # define SUBTARGET_EXTRA_SPECS EXTRA_OS_LYNX_SPECS
  43 #endif
  44
  45 #ifndef CPP_SPEC
  46 # define CPP_SPEC "%(cpp_cpu) %(cpp_os_lynx)"
  47 #endif
  48
  49 #ifndef LIB_SPEC
  50 # define LIB_SPEC "%(lib_os_lynx)"
  51 #endif
  52
  53 #ifndef LINK_SPEC
  54 # define LINK_SPEC "%(link_os_lynx)"
  55 #endif
  56
  57 #ifndef STARTFILE_SPEC
  58 # define STARTFILE_SPEC "%(startfile_os_lynx)"
  59 #endif
  60
  61 #ifndef ENDFILE_SPEC
  62 # define ENDFILE_SPEC "%(endfile_os_lynx)"
  63 #endif
  64
  65 #ifndef CPP_OS_LYNX_SPEC
  66 # define CPP_OS_LYNX_SPEC \
  67 "%{mthreads: \
  68    %{mlegacy-threads: \
  69      %ecannot use mthreads and mlegacy-threads together}} \
  70  %{mthreads: -D_MULTITHREADED} \
  71  %{mlegacy-threads: -D_THREADS_POSIX4ad4} \
  72  -Asystem=lynx -Asystem=unix -D__Lynx__ -D__unix__"
  73 #endif
  74
  75 #ifndef LIB_OS_LYNX_SPEC
  76 # define LIB_OS_LYNX_SPEC \
  77 "%{mlegacy-threads:-lposix-pre1c} -lm -lc"
  78 #endif
  79
  80 /* We link static executables for LynxOS by default unless -mshared is
  81    used when linking an executable.  Along the same line, we link to
  82    shared libraries when linking a shared object by default unless
  83    -static is used.
  84
  85    We have to pass in our -L options here otherwise the translated
  86    startfile directories (%D) will take priority over this.
  87    Furthermore since we have to pass in -L options here we have to
  88    make sure that -L options provided by the user take priority over
  89    everything we specify.  */
  90
  91 #ifndef LINK_OS_LYNX_SPEC
  92 # define LINK_OS_LYNX_SPEC \
  93 "%{shared} %{static} \
  94  %{mshared: %{static: %ecannot use mshared and static together}} \
  95  %{!mshared: %{!shared: %{!static: -static}}} \
  96  %{L*} \
  97  %{mthreads: \
  98    %{mshared: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
  99    %{shared: \
 100      %{!static: -L/lib/thread/shlib -rpath /lib/thread/shlib} \
 101    %{!mshared: -L/lib/thread}} \
 102    %{shared: %{static: -L/lib/thread}}} \
 103  %{!mthreads: \
 104    %{mshared: -L/lib/shlib -rpath /lib/shlib} \
 105    %{shared: -L/lib/shlib -rpath /lib/shlib}} \
 106  %{mlegacy-threads:-lposix-pre1c} -lm -lc"
 107 #endif
 108
 109 #ifndef STARTFILE_OS_LYNX_SPEC
 110 # define STARTFILE_OS_LYNX_SPEC \
 111 "%{!shared: \
 112    %{!mthreads: \
 113      %{p:gcrt1.o%s} %{pg:gcrt1.o%s} \
 114      %{!p:%{!pg:crt1.o%s}}} \
 115    %{mthreads: \
 116      %{p:thread/gcrt1.o%s} %{pg:thread/gcrt1.o%s} \
 117      %{!p:%{!pg:thread/crt1.o%s }}}}\
 118  %{mthreads: thread/crti.o%s} %{!mthreads: crti.o%s} \
 119  %{!shared: crtbegin.o%s} \
 120  %{shared: crtbeginS.o%s}"
 121 #endif
 122
 123 #ifndef ENDFILE_OS_LYNX_SPEC
 124 # define ENDFILE_OS_LYNX_SPEC \
 125 "%{!shared: crtend.o%s} \
 126  %{shared: crtendS.o%s} \
 127  %{mthreads: thread/crtn.o%s} %{!mthreads: crtn.o%s}"
 128 #endif
 129
 130 /* Define the actual types of some ANSI-mandated types.  */
 131
 132 #ifndef SIZE_TYPE
 133 # define SIZE_TYPE "unsigned int"
 134 #endif
 135
 136 #ifndef  PTRDIFF_TYPE
 137 # define PTRDIFF_TYPE "int"
 138 #endif
 139
 140 #ifndef  WCHAR_TYPE
 141 # define WCHAR_TYPE "long int"
 142 #endif
 143
 144 #ifndef  WCHAR_TYPE_SIZE
 145 # define WCHAR_TYPE_SIZE BITS_PER_WORD
 146 #endif
 147
 148 /* Define ASM_OUTPUT_ALIGN to use the .balign directive rather that
 149    the .align directive with GAS.  */
 150
 151 #ifndef ASM_OUTPUT_ALIGN
 152 # define ASM_OUTPUT_ALIGN(FILE, LOG)                    \
 153   do                                                    \
 154     {                                                   \
 155       if ((LOG) != 0)                                   \
 156         fprintf ((FILE), "\t.balign %d\n", 1 << (LOG)); \
 157     }                                                   \
 158   while (0)
 159 #endif
 160
 161 /* Keep the *_DEBUGGING_INFO defines from elfos.h except that stabs is
 162    the default on LynxOS.  */
 163
 164 #ifndef PREFERRED_DEBUGGING_TYPE
 165 # define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 166 #endif
 167
 168 /* We have C++ support in our system headers.  */
 169
 170 #ifndef NO_IMPLICIT_EXTERN_C
 171 # define NO_IMPLICIT_EXTERN_C
 172 #endif
 173
 174 #ifndef TARGET_POSIX_IO
 175 # define TARGET_POSIX_IO
 176 #endif