gcc/config/arm/uclinux-elf.h

   1 /* Definitions for ARM running ucLinux using ELF
   2    Copyright (C) 1999, 2001, 2004, 2005 Free Software Foundation, Inc.
   3    Contributed by Philip Blundell <pb@nexus.co.uk>
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 2, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; see the file COPYING.  If not, write to
  19    the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 /* We don't want a PLT.  */
  23 #undef  NEED_PLT_RELOC
  24 #define NEED_PLT_RELOC 0
  25
  26 #undef  TARGET_VERSION
  27 #define TARGET_VERSION fputs (" (ARM/ELF ucLinux)", stderr);
  28
  29 #undef  TARGET_DEFAULT
  30 #define TARGET_DEFAULT (MASK_SINGLE_PIC_BASE)
  31
  32 /* NOTE: The remaining definitions in this file are needed because uclinux
  33    does not use config/linux.h.  */
  34
  35 /* Add GNU/Linux builtins.  */
  36 #undef TARGET_OS_CPP_BUILTINS
  37 #define TARGET_OS_CPP_BUILTINS()                \
  38   do                                            \
  39     {                                           \
  40       builtin_define ("__uClinux__");           \
  41       builtin_define ("__gnu_linux__");         \
  42       builtin_define_std ("linux");             \
  43       builtin_define_std ("unix");              \
  44       builtin_assert ("system=linux");          \
  45       builtin_assert ("system=unix");           \
  46       builtin_assert ("system=posix");          \
  47     }                                           \
  48   while (false)
  49
  50 /* Do not assume anything about header files.  */
  51 #define NO_IMPLICIT_EXTERN_C
  52
  53 /* The GNU C++ standard library requires that these macros be defined.  */
  54 #undef CPLUSPLUS_CPP_SPEC
  55 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
  56
  57 #undef SUBTARGET_EXTRA_LINK_SPEC
  58 #define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux"
  59
  60 /* Now we define the strings used to build the spec file.  */
  61 #undef  STARTFILE_SPEC
  62 #define STARTFILE_SPEC  "crt1%O%s crti%O%s crtbegin%O%s"
  63
  64 #undef  ENDFILE_SPEC
  65 #define ENDFILE_SPEC    "crtend%O%s crtn%O%s"
  66
  67 #undef  CC1_SPEC
  68 #define CC1_SPEC "%{profile:-p}"
  69
  70 #undef LINK_GCC_C_SEQUENCE_SPEC
  71 #define LINK_GCC_C_SEQUENCE_SPEC \
  72   "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
  73
  74 /* Use --as-needed -lgcc_s for eh support.  */
  75 #ifdef HAVE_LD_AS_NEEDED
  76 #define USE_LD_AS_NEEDED 1
  77 #endif
  78
  79 #undef LINK_SPEC
  80 #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X -elf2flt"
  81
  82 #undef  LIB_SPEC
  83 #define LIB_SPEC \
  84   "%{pthread:-lpthread} \
  85    %{shared:-lc} \
  86    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"