gcc/config/freebsd.h

   1 /* Base configuration file for all FreeBSD targets.
   2    Copyright (C) 1999-2023 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 bsd_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 /* Link -lasan early on the command line.  For -static-libasan, don't link
  66    it for -shared link, the executable should be compiled with -static-libasan
  67    in that case, and for executable link with --{,no-}whole-archive around
  68    it to force everything into the executable.  And similarly for -ltsan
  69    and -llsan.  */
  70 #if defined(HAVE_LD_STATIC_DYNAMIC)
  71 #undef LIBASAN_EARLY_SPEC
  72 #define LIBASAN_EARLY_SPEC "%{!shared:libasan_preinit%O%s} " \
  73   "%{static-libasan:%{!shared:" \
  74   LD_STATIC_OPTION " --whole-archive -lasan --no-whole-archive " \
  75   LD_DYNAMIC_OPTION "}}%{!static-libasan:-lasan -lpthread}"
  76 #undef LIBTSAN_EARLY_SPEC
  77 #define LIBTSAN_EARLY_SPEC "%{static-libtsan:%{!shared:" \
  78   LD_STATIC_OPTION " --whole-archive -ltsan --no-whole-archive " \
  79   LD_DYNAMIC_OPTION "}}%{!static-libtsan:-ltsan -lpthread}"
  80 #undef LIBLSAN_EARLY_SPEC
  81 #define LIBLSAN_EARLY_SPEC "%{static-liblsan:%{!shared:" \
  82   LD_STATIC_OPTION " --whole-archive -llsan --no-whole-archive " \
  83   LD_DYNAMIC_OPTION "}}%{!static-liblsan:-llsan -lpthread}"
  84 #endif
  85
  86 /************************[  Target stuff  ]***********************************/
  87
  88 /* All FreeBSD Architectures support the ELF object file format.  */
  89 #undef  OBJECT_FORMAT_ELF
  90 #define OBJECT_FORMAT_ELF
  91
  92 /* Follow FreeBSD's standard headers (<sys/_types.h> etc...).  */
  93
  94 #undef  WCHAR_TYPE
  95 #define WCHAR_TYPE "int"
  96
  97 #undef  WINT_TYPE
  98 #define WINT_TYPE "int"
  99
 100 #define MATH_LIBRARY_PROFILE    "m_p"
 101
 102 /* Code generation parameters.  */
 103
 104 /* Use periods rather than dollar signs in special g++ assembler names.
 105    This ensures the configuration knows our system correctly so we can link
 106    with libraries compiled with the native cc.  */
 107 #undef NO_DOLLAR_IN_LABEL
 108
 109 /* Used by libgcc2.c.  We support file locking with fcntl / F_SETLKW.
 110    This enables the test coverage code to use file locking when exiting a
 111    program, which avoids race conditions if the program has forked.  */
 112 #define TARGET_POSIX_IO