1  /* Definitions of target machine for the GNU compiler collection
       2     for Atmel AVR micro controller if configured for AVR-Libc.
       3     Copyright (C) 2012-2023 Free Software Foundation, Inc.
       4     Contributed by Georg-Johann Lay (avr@gjlay.de)
       5  
       6  This file is part of GCC.
       7  
       8  GCC is free software; you can redistribute it and/or modify
       9  it under the terms of the GNU General Public License as published by
      10  the Free Software Foundation; either version 3, or (at your option)
      11  any later version.
      12  
      13  GCC is distributed in the hope that it will be useful,
      14  but WITHOUT ANY WARRANTY; without even the implied warranty of
      15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      16  GNU General Public License for more details.
      17  
      18  You should have received a copy of the GNU General Public License
      19  along with GCC; see the file COPYING3.  If not see
      20  <http://www.gnu.org/licenses/>.  */
      21  
      22  #undef  LIB_SPEC
      23  #define LIB_SPEC                                \
      24    "%{!mmcu=avr1:-lc} %(avrlibc_devicelib)"
      25  
      26  // AVR-Libc implements functions from libgcc.a in libm.a, see PR54461.
      27  // For a list of functions which are provided by libm.a and are
      28  // omitted from libgcc.a see libgcc's t-avrlibc.
      29  
      30  #undef  LIBGCC_SPEC
      31  #define LIBGCC_SPEC                             \
      32    "%{!mmcu=avr1:-lgcc -lm}"
      33  
      34  #undef  STARTFILE_SPEC
      35  #define STARTFILE_SPEC                          \
      36    " %(avrlibc_startfile) "
      37  
      38  #undef  LINK_GCC_C_SEQUENCE_SPEC
      39  #define LINK_GCC_C_SEQUENCE_SPEC \
      40    "--start-group %G %{!nolibc:%L} --end-group"