gcc/config/freebsd-spec.h

   1 /* Base configuration file for all FreeBSD targets.
   2    Copyright (C) 1999, 2000, 2001, 2004, 2005, 2007 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/freebsd.h by
  24    David O'Brien <obrien@FreeBSD.org>
  25    Loren J. Rittle <ljrittle@acm.org>.  */
  26
  27
  28 /* In case we need to know.  */
  29 #define USING_CONFIG_FREEBSD_SPEC 1
  30
  31 /* This defines which switch letters take arguments.  On FreeBSD, most of
  32    the normal cases (defined in gcc.c) apply, and we also have -h* and
  33    -z* options (for the linker) (coming from SVR4).
  34    We also have -R (alias --rpath), no -z, --soname (-h), --assert etc.  */
  35
  36 #define FBSD_SWITCH_TAKES_ARG(CHAR)                                     \
  37   (DEFAULT_SWITCH_TAKES_ARG (CHAR)                                      \
  38     || (CHAR) == 'h'                                                    \
  39     || (CHAR) == 'z' /* ignored by ld */                                \
  40     || (CHAR) == 'R')
  41
  42 /* This defines which multi-letter switches take arguments.  */
  43
  44 #define FBSD_WORD_SWITCH_TAKES_ARG(STR)                                 \
  45   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)                                  \
  46    || !strcmp ((STR), "rpath") || !strcmp ((STR), "rpath-link")         \
  47    || !strcmp ((STR), "soname") || !strcmp ((STR), "defsym")            \
  48    || !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker"))
  49
  50 #define FBSD_TARGET_OS_CPP_BUILTINS()                                   \
  51   do                                                                    \
  52     {                                                                   \
  53         builtin_define_with_int_value ("__FreeBSD__", FBSD_MAJOR);      \
  54         builtin_define_std ("unix");                                    \
  55         builtin_define ("__KPRINTF_ATTRIBUTE__");                       \
  56         builtin_assert ("system=unix");                                 \
  57         builtin_assert ("system=bsd");                                  \
  58         builtin_assert ("system=FreeBSD");                              \
  59         FBSD_TARGET_CPU_CPP_BUILTINS();                                 \
  60     }                                                                   \
  61   while (0)
  62
  63 /* Define the default FreeBSD-specific per-CPU hook code.  */
  64 #define FBSD_TARGET_CPU_CPP_BUILTINS() do {} while (0)
  65
  66 /* Provide a CPP_SPEC appropriate for FreeBSD.  We just deal with the GCC
  67    option `-posix', and PIC issues.  */
  68
  69 #define FBSD_CPP_SPEC "                                                 \
  70   %(cpp_cpu)                                                            \
  71   %(cpp_arch)                                                           \
  72   %{posix:-D_POSIX_SOURCE}"
  73
  74 /* Provide a STARTFILE_SPEC appropriate for FreeBSD.  Here we add
  75    the magical crtbegin.o file (see crtstuff.c) which provides part
  76         of the support for getting C++ file-scope static object constructed
  77         before entering `main'.  */
  78
  79 #define FBSD_STARTFILE_SPEC \
  80   "%{!shared: \
  81      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
  82                        %{!p:%{profile:gcrt1.o%s} \
  83                          %{!profile:crt1.o%s}}}} \
  84    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
  85
  86 /* Provide a ENDFILE_SPEC appropriate for FreeBSD.  Here we tack on
  87    the magical crtend.o file (see crtstuff.c) which provides part of
  88         the support for getting C++ file-scope static object constructed
  89         before entering `main', followed by a normal "finalizer" file,
  90         `crtn.o'.  */
  91
  92 #define FBSD_ENDFILE_SPEC \
  93   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
  94
  95 /* Provide a LIB_SPEC appropriate for FreeBSD as configured and as
  96    required by the user-land thread model.  Before __FreeBSD_version
  97    500016, select the appropriate libc, depending on whether we're
  98    doing profiling or need threads support.  At __FreeBSD_version
  99    500016 and later, when threads support is requested include both
 100    -lc and the threading lib instead of only -lc_r.  To make matters
 101    interesting, we can't actually use __FreeBSD_version provided by
 102    <osreldate.h> directly since it breaks cross-compiling.  As a final
 103    twist, make it a hard error if -pthread is provided on the command
 104    line and gcc was configured with --disable-threads (this will help
 105    avoid bug reports from users complaining about threading when they
 106    misconfigured the gcc bootstrap but are later consulting FreeBSD
 107    manual pages that refer to the mythical -pthread option).  */
 108
 109 /* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
 110    libc, depending on whether we're doing profiling or need threads support.
 111    (similar to the default, except no -lg, and no -p).  */
 112
 113 #ifdef FBSD_NO_THREADS
 114 #define FBSD_LIB_SPEC "                                                 \
 115   %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
 116 is built with the --enable-threads configure-time option.}              \
 117   %{!shared:                                                            \
 118     %{!pg: -lc}                                                         \
 119     %{pg:  -lc_p}                                                       \
 120   }"
 121 #else
 122 #if FBSD_MAJOR < 5
 123 #define FBSD_LIB_SPEC "                                                 \
 124   %{!shared:                                                            \
 125     %{!pg:                                                              \
 126       %{!pthread:-lc}                                                   \
 127       %{pthread:-lc_r}}                                                 \
 128     %{pg:                                                               \
 129       %{!pthread:-lc_p}                                                 \
 130       %{pthread:-lc_r_p}}                                               \
 131   }"
 132 #else
 133 #define FBSD_LIB_SPEC "                                                 \
 134   %{!shared:                                                            \
 135     %{!pg: %{pthread:-lpthread} -lc}                                    \
 136     %{pg:  %{pthread:-lpthread_p} -lc_p}                                \
 137   }"
 138 #endif
 139 #endif
 140
 141 #if FBSD_MAJOR < 6
 142 #define FBSD_DYNAMIC_LINKER "/usr/libexec/ld-elf.so.1"
 143 #else
 144 #define FBSD_DYNAMIC_LINKER "/libexec/ld-elf.so.1"
 145 #endif