gcc/config/riscv/linux.h

   1 /* Definitions for RISC-V GNU/Linux systems with ELF format.
   2    Copyright (C) 1998-2017 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 #define TARGET_OS_CPP_BUILTINS()                                \
  21   do {                                                          \
  22     GNU_USER_TARGET_OS_CPP_BUILTINS();                          \
  23   } while (0)
  24
  25 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-riscv" XLEN_SPEC "-" ABI_SPEC ".so.1"
  26
  27 /* Because RISC-V only has word-sized atomics, it requries libatomic where
  28    others do not.  So link libatomic by default, as needed.  */
  29 #undef LIB_SPEC
  30 #ifdef LD_AS_NEEDED_OPTION
  31 #define LIB_SPEC GNU_USER_TARGET_LIB_SPEC \
  32   " %{pthread:" LD_AS_NEEDED_OPTION " -latomic " LD_NO_AS_NEEDED_OPTION "}"
  33 #else
  34 #define LIB_SPEC GNU_USER_TARGET_LIB_SPEC " -latomic "
  35 #endif
  36
  37 #define LINK_SPEC "\
  38 -melf" XLEN_SPEC "lriscv \
  39 %{shared} \
  40   %{!shared: \
  41     %{!static: \
  42       %{rdynamic:-export-dynamic} \
  43       -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
  44     %{static:-static}}"