gcc/config/netbsd-elf.h

   1 /* Common configuration file for NetBSD ELF targets.
   2    Copyright (C) 2002 Free Software Foundation, Inc.
   3    Contributed by Wasabi Systems, Inc.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC 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 GNU CC 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 CC; 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 /* TARGET_OS_CPP_BUILTINS() common to all NetBSD ELF targets.  */
  23 #define NETBSD_OS_CPP_BUILTINS_ELF()            \
  24   do                                            \
  25     {                                           \
  26       NETBSD_OS_CPP_BUILTINS_COMMON();          \
  27       builtin_define ("__ELF__");               \
  28     }                                           \
  29   while (0)
  30
  31 /* This defines which switch letters take arguments.  On NetBSD, most
  32    of the normal cases (defined by gcc.c) apply, and we also have -h*
  33    and -z* options (for the linker) (coming from SVR4).  */
  34
  35 #undef SWITCH_TAKES_ARG
  36 #define SWITCH_TAKES_ARG(CHAR)                  \
  37   (DEFAULT_SWITCH_TAKES_ARG (CHAR)              \
  38    || (CHAR) == 'h'                             \
  39    || (CHAR) == 'z'                             \
  40    || (CHAR) == 'R')
  41
  42
  43 /* Provide a STARTFILE_SPEC appropriate for NetBSD ELF.  Here we
  44    provide support for the special GCC option -static.  On ELF
  45    targets, we also add the crtbegin.o file, which provides part
  46    of the support for getting C++ file-scope static objects
  47    constructed before entering "main".  */
  48
  49 #undef STARTFILE_SPEC
  50 #define STARTFILE_SPEC          \
  51   "%{!shared:                   \
  52      %{pg:gcrt0%O%s}            \
  53      %{!pg:                     \
  54        %{p:gcrt0%O%s}           \
  55        %{!p:crt0%O%s}}}         \
  56    %{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}"
  57
  58
  59 /* Provide an ENDFILE_SPEC appropriate for NetBSD ELF.  Here we
  60    add crtend.o, which provides part of the support for getting
  61    C++ file-scope static objects deconstructed after exiting "main".  */
  62
  63 #undef ENDFILE_SPEC
  64 #define ENDFILE_SPEC            \
  65   "%{!shared:crtend%O%s} %{shared:crtendS%O%s}"
  66
  67
  68 /* Provide a LINK_SPEC appropriate for NetBSD ELF.  Here we provide
  69    support for the special GCC options -assert, -R, -rpath, -shared,
  70    -nostdlib, -static, -rdynamic, and -dynamic-linker.
  71
  72    Target-specific code can use this in conjunction with any other
  73    target-specific LINK_SPEC options.
  74
  75    Target-specific code must provide the %(netbsd_entry_point) spec.  */
  76
  77 #define NETBSD_LINK_SPEC_ELF \
  78   "%{assert*} %{R*} %{rpath*} \
  79    %{shared:-shared} \
  80    %{!shared: \
  81      -dc -dp \
  82      %{!nostdlib: \
  83        %{!r*: \
  84          %{!e*:-e %(netbsd_entry_point)}}} \
  85      %{!static: \
  86        %{rdynamic:-export-dynamic} \
  87        %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}} \
  88      %{static:-static}}"