gcc/config/freebsd-spec.h

   1 /* Base configuration file for all FreeBSD targets.
   2    Copyright (C) 1999, 2000, 2001, 2004, 2005, 2007, 2009 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 /* This defines which switch letters take arguments.  On FreeBSD, most of
  37    the normal cases (defined in gcc.c) apply, and we also have -h* and
  38    -z* options (for the linker) (coming from SVR4).
  39    We also have -R (alias --rpath), no -z, --soname (-h), --assert etc.  */
  40
  41 #define FBSD_SWITCH_TAKES_ARG(CHAR)                                     \
  42   (DEFAULT_SWITCH_TAKES_ARG (CHAR)                                      \
  43     || (CHAR) == 'h'                                                    \
  44     || (CHAR) == 'z' /* ignored by ld */                                \
  45     || (CHAR) == 'R')
  46
  47 /* This defines which multi-letter switches take arguments.  */
  48
  49 #define FBSD_WORD_SWITCH_TAKES_ARG(STR)                                 \
  50   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)                                  \
  51    || !strcmp ((STR), "rpath") || !strcmp ((STR), "rpath-link")         \
  52    || !strcmp ((STR), "soname") || !strcmp ((STR), "defsym")            \
  53    || !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker"))
  54
  55 #define FBSD_TARGET_OS_CPP_BUILTINS()                                   \
  56   do                                                                    \
  57     {                                                                   \
  58         builtin_define_with_int_value ("__FreeBSD__", FBSD_MAJOR);      \
  59         builtin_define_std ("unix");                                    \
  60         builtin_define ("__KPRINTF_ATTRIBUTE__");                       \
  61         builtin_assert ("system=unix");                                 \
  62         builtin_assert ("system=bsd");                                  \
  63         builtin_assert ("system=FreeBSD");                              \
  64         FBSD_TARGET_CPU_CPP_BUILTINS();                                 \
  65     }                                                                   \
  66   while (0)
  67
  68 /* Define the default FreeBSD-specific per-CPU hook code.  */
  69 #define FBSD_TARGET_CPU_CPP_BUILTINS() do {} while (0)
  70
  71 /* Provide a CPP_SPEC appropriate for FreeBSD.  We just deal with the GCC
  72    option `-posix', and PIC issues.  */
  73
  74 #define FBSD_CPP_SPEC "                                                 \
  75   %(cpp_cpu)                                                            \
  76   %(cpp_arch)                                                           \
  77   %{posix:-D_POSIX_SOURCE}"
  78
  79 /* Provide a STARTFILE_SPEC appropriate for FreeBSD.  Here we add
  80    the magical crtbegin.o file (see crtstuff.c) which provides part
  81         of the support for getting C++ file-scope static object constructed
  82         before entering `main'.  */
  83
  84 #define FBSD_STARTFILE_SPEC \
  85   "%{!shared: \
  86      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
  87                        %{!p:%{profile:gcrt1.o%s} \
  88                          %{!profile:crt1.o%s}}}} \
  89    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
  90
  91 /* Provide a ENDFILE_SPEC appropriate for FreeBSD.  Here we tack on
  92    the magical crtend.o file (see crtstuff.c) which provides part of
  93         the support for getting C++ file-scope static object constructed
  94         before entering `main', followed by a normal "finalizer" file,
  95         `crtn.o'.  */
  96
  97 #define FBSD_ENDFILE_SPEC \
  98   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
  99
 100 /* Provide a LIB_SPEC appropriate for FreeBSD as configured and as
 101    required by the user-land thread model.  Before __FreeBSD_version
 102    500016, select the appropriate libc, depending on whether we're
 103    doing profiling or need threads support.  At __FreeBSD_version
 104    500016 and later, when threads support is requested include both
 105    -lc and the threading lib instead of only -lc_r.  To make matters
 106    interesting, we can't actually use __FreeBSD_version provided by
 107    <osreldate.h> directly since it breaks cross-compiling.  As a final
 108    twist, make it a hard error if -pthread is provided on the command
 109    line and gcc was configured with --disable-threads (this will help
 110    avoid bug reports from users complaining about threading when they
 111    misconfigured the gcc bootstrap but are later consulting FreeBSD
 112    manual pages that refer to the mythical -pthread option).  */
 113
 114 /* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
 115    libc, depending on whether we're doing profiling or need threads support.
 116    (similar to the default, except no -lg, and no -p).  */
 117
 118 #ifdef FBSD_NO_THREADS
 119 #define FBSD_LIB_SPEC "                                                 \
 120   %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
 121 is built with the --enable-threads configure-time option.}              \
 122   %{!shared:                                                            \
 123     %{!pg: -lc}                                                         \
 124     %{pg:  -lc_p}                                                       \
 125   }"
 126 #else
 127 #if FBSD_MAJOR < 5
 128 #define FBSD_LIB_SPEC "                                                 \
 129   %{!shared:                                                            \
 130     %{!pg:                                                              \
 131       %{!pthread:-lc}                                                   \
 132       %{pthread:-lc_r}}                                                 \
 133     %{pg:                                                               \
 134       %{!pthread:-lc_p}                                                 \
 135       %{pthread:-lc_r_p}}                                               \
 136   }"
 137 #else
 138 #define FBSD_LIB_SPEC "                                                 \
 139   %{!shared:                                                            \
 140     %{!pg: %{pthread:-lpthread} -lc}                                    \
 141     %{pg:  %{pthread:-lpthread_p} -lc_p}                                \
 142   }"
 143 #endif
 144 #endif
 145
 146 #if FBSD_MAJOR < 6
 147 #define FBSD_DYNAMIC_LINKER "/usr/libexec/ld-elf.so.1"
 148 #else
 149 #define FBSD_DYNAMIC_LINKER "/libexec/ld-elf.so.1"
 150 #endif