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1 /* Definitions of target machine for the GNU compiler collection
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2 for Atmel AVR micro controller if configured for AVR-Libc.
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3 Copyright (C) 2012-2018 Free Software Foundation, Inc.
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4 Contributed by Georg-Johann Lay (avr@gjlay.de)
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify
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9 it under the terms of the GNU General Public License as published by
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10 the Free Software Foundation; either version 3, or (at your option)
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11 any later version.
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12
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13 GCC is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 #undef LIB_SPEC
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23 #define LIB_SPEC \
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24 "%{!mmcu=avr1:-lc} %(avrlibc_devicelib)"
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25
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26 // AVR-Libc implements functions from libgcc.a in libm.a, see PR54461.
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27 // For a list of functions which are provided by libm.a and are
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28 // omitted from libgcc.a see libgcc's t-avrlibc.
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29
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30 #undef LIBGCC_SPEC
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31 #define LIBGCC_SPEC \
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32 "%{!mmcu=avr1:-lgcc -lm}"
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33
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34 #undef STARTFILE_SPEC
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35 #define STARTFILE_SPEC \
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36 " %(avrlibc_startfile) "
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37
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38 #undef LINK_GCC_C_SEQUENCE_SPEC
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39 #define LINK_GCC_C_SEQUENCE_SPEC \
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131
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40 "--start-group %G %{!nolibc:%L} --end-group"
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