gcc/config/freebsd.h

   1 /* Base configuration file for all FreeBSD targets.
   2    Copyright (C) 1999-2017 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 /* Common FreeBSD configuration.
  21    All FreeBSD architectures should include this file, which will specify
  22    their commonalities.
  23    Adapted from gcc/config/i386/freebsd-elf.h by
  24    David O'Brien <obrien@FreeBSD.org>.
  25    Further work by David O'Brien <obrien@FreeBSD.org> and
  26    Loren J. Rittle <ljrittle@acm.org>.  */
  27
  28
  29 /* In case we need to know.  */
  30 #define USING_CONFIG_FREEBSD 1
  31
  32 #undef  TARGET_OS_CPP_BUILTINS
  33 #define TARGET_OS_CPP_BUILTINS() FBSD_TARGET_OS_CPP_BUILTINS()
  34
  35 #undef  CPP_SPEC
  36 #define CPP_SPEC FBSD_CPP_SPEC
  37
  38 #undef  STARTFILE_SPEC
  39 #define STARTFILE_SPEC FBSD_STARTFILE_SPEC
  40
  41 #undef  ENDFILE_SPEC
  42 #define ENDFILE_SPEC FBSD_ENDFILE_SPEC
  43
  44 #undef  LIB_SPEC
  45 #define LIB_SPEC FBSD_LIB_SPEC
  46
  47 #if defined(HAVE_LD_EH_FRAME_HDR)
  48 #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} "
  49 #endif
  50
  51 #ifdef TARGET_LIBC_PROVIDES_SSP
  52 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
  53                        "|fstack-protector-strong|fstack-protector-explicit" \
  54                        ":-lssp_nonshared}"
  55 #endif
  56
  57 #undef TARGET_LIBC_HAS_FUNCTION
  58 #define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
  59
  60 /* Use --as-needed -lgcc_s for eh support.  */
  61 #ifdef HAVE_LD_AS_NEEDED
  62 #define USE_LD_AS_NEEDED 1
  63 #endif
  64
  65 /************************[  Target stuff  ]***********************************/
  66
  67 /* All FreeBSD Architectures support the ELF object file format.  */
  68 #undef  OBJECT_FORMAT_ELF
  69 #define OBJECT_FORMAT_ELF
  70
  71 /* Don't assume anything about the header files.  */
  72 #undef  NO_IMPLICIT_EXTERN_C
  73 #define NO_IMPLICIT_EXTERN_C    1
  74
  75 /* Follow FreeBSD's standard headers (<sys/_types.h> etc...).  */
  76
  77 #undef  WCHAR_TYPE
  78 #define WCHAR_TYPE "int"
  79
  80 #undef  WINT_TYPE
  81 #define WINT_TYPE "int"
  82
  83 #define MATH_LIBRARY_PROFILE    "m_p"
  84
  85 /* Code generation parameters.  */
  86
  87 /* Use periods rather than dollar signs in special g++ assembler names.
  88    This ensures the configuration knows our system correctly so we can link
  89    with libraries compiled with the native cc.  */
  90 #undef NO_DOLLAR_IN_LABEL
  91
  92 /* Used by libgcc2.c.  We support file locking with fcntl / F_SETLKW.
  93    This enables the test coverage code to use file locking when exiting a
  94    program, which avoids race conditions if the program has forked.  */
  95 #define TARGET_POSIX_IO