1 /* Definitions of target machine for the GNU compiler collection 2 for Atmel AVR micro controller if configured for AVR-Libc. 3 Copyright (C) 2012-2020 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" 41