gcc/config/freebsd-spec.h

   1 /* Base configuration file for all FreeBSD targets.
   2    Copyright (C) 1999-2018 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 Under Section 7 of GPL version 3, you are granted additional
  17 permissions described in the GCC Runtime Library Exception, version
  18 3.1, as published by the Free Software Foundation.
  19
  20 You should have received a copy of the GNU General Public License and
  21 a copy of the GCC Runtime Library Exception along with this program;
  22 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25 /* Common FreeBSD configuration.
  26    All FreeBSD architectures should include this file, which will specify
  27    their commonalities.
  28    Adapted from gcc/config/freebsd.h by
  29    David O'Brien <obrien@FreeBSD.org>
  30    Loren J. Rittle <ljrittle@acm.org>.  */
  31
  32
  33 /* In case we need to know.  */
  34 #define USING_CONFIG_FREEBSD_SPEC 1
  35
  36 #define FBSD_TARGET_OS_CPP_BUILTINS()                                   \
  37   do                                                                    \
  38     {                                                                   \
  39         builtin_define_with_int_value ("__FreeBSD__", FBSD_MAJOR);      \
  40         builtin_define_std ("unix");                                    \
  41         builtin_define ("__KPRINTF_ATTRIBUTE__");                       \
  42         builtin_assert ("system=unix");                                 \
  43         builtin_assert ("system=bsd");                                  \
  44         builtin_assert ("system=FreeBSD");                              \
  45         FBSD_TARGET_CPU_CPP_BUILTINS();                                 \
  46     }                                                                   \
  47   while (0)
  48
  49 /* Define the default FreeBSD-specific per-CPU hook code.  */
  50 #define FBSD_TARGET_CPU_CPP_BUILTINS() do {} while (0)
  51
  52 /* Provide a CPP_SPEC appropriate for FreeBSD.  We just deal with the GCC
  53    option `-posix', and PIC issues.  */
  54
  55 #define FBSD_CPP_SPEC "                                                 \
  56   %(cpp_cpu)                                                            \
  57   %(cpp_arch)                                                           \
  58   %{posix:-D_POSIX_SOURCE}"
  59
  60 /* Provide a STARTFILE_SPEC appropriate for FreeBSD.  Here we add
  61    the magical crtbegin.o file (see crtstuff.c) which provides part
  62         of the support for getting C++ file-scope static object constructed
  63         before entering `main'.  */
  64
  65 #define FBSD_STARTFILE_SPEC \
  66   "%{!shared: \
  67      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
  68                        %{!p:%{profile:gcrt1.o%s} \
  69                          %{!profile: \
  70                             %{pie: Scrt1.o%s;:crt1.o%s}}}}} \
  71    crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
  72
  73 /* Provide a ENDFILE_SPEC appropriate for FreeBSD.  Here we tack on
  74    the magical crtend.o file (see crtstuff.c) which provides part of
  75         the support for getting C++ file-scope static object constructed
  76         before entering `main', followed by a normal "finalizer" file,
  77         `crtn.o'.  */
  78
  79 #define FBSD_ENDFILE_SPEC \
  80   "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
  81
  82 /* When threads support is requested include both -lc and the threading
  83    library (which assumes FreeBSD 5.x or later, __FreeBSD_version 500016
  84    to be precise).
  85    And make it a hard error if -pthread is provided on the command
  86    line and gcc was configured with --disable-threads (this will help
  87    avoid bug reports from users complaining about threading when they
  88    misconfigured the gcc bootstrap but are later consulting FreeBSD
  89    manual pages that refer to the mythical -pthread option).  */
  90
  91 /* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
  92    libc, depending on whether we're doing profiling or need threads support.
  93    (similar to the default, except no -lg, and no -p).  */
  94
  95 #ifdef FBSD_NO_THREADS
  96 #define FBSD_LIB_SPEC "                                                 \
  97   %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
  98 is built with the --enable-threads configure-time option.}              \
  99   %{!shared:                                                            \
 100     %{!pg: -lc}                                                         \
 101     %{pg:  -lc_p}                                                       \
 102   }"
 103 #else
 104 #define FBSD_LIB_SPEC "                                                 \
 105   %{!shared:                                                            \
 106     %{!pg: %{pthread:-lpthread} -lc}                                    \
 107     %{pg:  %{pthread:-lpthread_p} -lc_p}                                \
 108   }                                                                     \
 109   %{shared:                                                             \
 110     %{pthread:-lpthread} -lc                                            \
 111   }"
 112 #endif
 113
 114 /* To make matters interesting, we can't actually use __FreeBSD_version
 115    provided by <osreldate.h> directly since it breaks cross-compiling.  */
 116
 117 #if FBSD_MAJOR < 6
 118 #define FBSD_DYNAMIC_LINKER "/usr/libexec/ld-elf.so.1"
 119 #else
 120 #define FBSD_DYNAMIC_LINKER "/libexec/ld-elf.so.1"
 121 #endif
 122
 123 /* NOTE: The freebsd-spec.h header is included also for various
 124    non-FreeBSD powerpc targets, thus it should never define macros
 125    other than FBSD_* prefixed ones, or USING_CONFIG_FREEBSD_SPEC.  */