1  /* Configuration file for ARM GNU/Linux FDPIC EABI targets.
       2     Copyright (C) 2018-2023 Free Software Foundation, Inc.
       3     Contributed by STMicroelectronics.
       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  /* On uClibc EABI GNU/Linux, we want to force -mfdpic by default,
      22     which also means we produce PIE code by default.  */
      23  #undef FDPIC_CC1_SPEC
      24  #define FDPIC_CC1_SPEC \
      25    "%{!mno-fdpic:-mfdpic %{!fno-PIE:%{!fpie:%{!fPIC:%{!fpic: -fPIE}}}}}"
      26  
      27  /* Add --fdpic assembler flag by default.  */
      28  #undef TARGET_FDPIC_ASM_SPEC
      29  #define TARGET_FDPIC_ASM_SPEC "%{!mno-fdpic: --fdpic}"
      30  
      31  /* TARGET_BIG_ENDIAN_DEFAULT is set in
      32     config.gcc for big endian configurations.  */
      33  #if TARGET_BIG_ENDIAN_DEFAULT
      34  #define TARGET_FDPIC_LINKER_EMULATION "armelfb_linux_fdpiceabi"
      35  #else
      36  #define TARGET_FDPIC_LINKER_EMULATION "armelf_linux_fdpiceabi"
      37  #endif
      38  
      39  /* Unless we generate a shared library or a relocatable object, we
      40     force -pie.  */
      41  /* -static is not supported, because we have to define the
      42     dynamic-linker, as we have some relocations to resolve at load
      43     time. We do not generate an error in case the user explictly passes
      44     the -dynamic-linker option to the linker.  */
      45  #undef  SUBTARGET_EXTRA_LINK_SPEC
      46  #define SUBTARGET_EXTRA_LINK_SPEC			    \
      47    "%{!mno-fdpic: -m " TARGET_FDPIC_LINKER_EMULATION	    \
      48     "%{!shared:%{!r: -pie}} }"				    \
      49    "%{mno-fdpic: -m " TARGET_LINKER_EMULATION "}"	    \
      50    "%{!r:%{!mno-fdpic: -z now}}"
      51  
      52  #undef	STARTFILE_SPEC
      53  #define STARTFILE_SPEC "%{!mno-fdpic:%{!shared:crtreloc.o%s}} " \
      54    LINUX_OR_ANDROID_LD (GNU_USER_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)