gcc/config/lm32/uclinux-elf.h

   1 /* Definitions for LM32 running Linux-based GNU systems using ELF
   2    Copyright (C) 1993-2017 Free Software Foundation, Inc.
   3    Contributed by Philip Blundell <philb@gnu.org>
   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 3, 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 GCC; see the file COPYING3.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 /* elfos.h should have already been included.  Now just override
  22    any conflicting definitions and add any extras.  */
  23
  24 /* Do not assume anything about header files.  */
  25 #undef NO_IMPLICIT_EXTERN_C
  26 #define NO_IMPLICIT_EXTERN_C
  27
  28 /* The GNU C++ standard library requires that these macros be defined.  */
  29 #undef CPLUSPLUS_CPP_SPEC
  30 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
  31
  32 /* Now we define the strings used to build the spec file.  */
  33 #undef  LIB_SPEC
  34 #define LIB_SPEC \
  35   "%{pthread:-lpthread} \
  36    %{shared:-lc} \
  37    %{!shared:-lc} "
  38
  39 #define LIBGCC_SPEC "-lgcc"
  40
  41 /* Provide a STARTFILE_SPEC appropriate for GNU/Linux.  Here we add
  42    the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
  43    provides part of the support for getting C++ file-scope static
  44    object constructed before entering `main'.  */
  45
  46 #undef  STARTFILE_SPEC
  47 #define STARTFILE_SPEC \
  48   "%{!shared: \
  49      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
  50                        %{!p:%{profile:gcrt1.o%s} \
  51                          %{!profile:crt1.o%s}}}} \
  52    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
  53
  54 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux.  Here we tack on
  55    the GNU/Linux magical crtend.o file (see crtstuff.c) which
  56    provides part of the support for getting C++ file-scope static
  57    object constructed before entering `main', followed by a normal
  58    GNU/Linux "finalizer" file, `crtn.o'.  */
  59
  60 #undef  ENDFILE_SPEC
  61 #define ENDFILE_SPEC \
  62   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
  63
  64 #undef  LINK_SPEC
  65 #define LINK_SPEC "%{h*} \
  66    %{static:-Bstatic} \
  67    %{shared:-shared} \
  68    %{symbolic:-Bsymbolic} \
  69    %{rdynamic:-export-dynamic} \
  70    -dynamic-linker /lib/ld-linux.so.2"
  71
  72 #define TARGET_OS_CPP_BUILTINS() GNU_USER_TARGET_OS_CPP_BUILTINS()
  73
  74 #define LINK_GCC_C_SEQUENCE_SPEC \
  75   "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
  76
  77 #undef  CC1_SPEC
  78 #define CC1_SPEC "%{G*} %{!fno-PIC:-fPIC}"