gcc/config/freebsd-spec.h

   1 /* Base configuration file for all FreeBSD targets.
   2    Copyright (C) 1999, 2000, 2001, 2004, 2005 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 2, 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 COPYING.  If not, write to
  18 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  19 Boston, MA 02110-1301, USA.  */
  20
  21 /* Common FreeBSD configuration.
  22    All FreeBSD architectures should include this file, which will specify
  23    their commonalities.
  24    Adapted from gcc/config/freebsd.h by
  25    David O'Brien <obrien@FreeBSD.org>
  26    Loren J. Rittle <ljrittle@acm.org>.  */
  27
  28
  29 /* In case we need to know.  */
  30 #define USING_CONFIG_FREEBSD_SPEC 1
  31
  32 /* This defines which switch letters take arguments.  On FreeBSD, most of
  33    the normal cases (defined in gcc.c) apply, and we also have -h* and
  34    -z* options (for the linker) (coming from SVR4).
  35    We also have -R (alias --rpath), no -z, --soname (-h), --assert etc.  */
  36
  37 #define FBSD_SWITCH_TAKES_ARG(CHAR)                                     \
  38   (DEFAULT_SWITCH_TAKES_ARG (CHAR)                                      \
  39     || (CHAR) == 'h'                                                    \
  40     || (CHAR) == 'z' /* ignored by ld */                                \
  41     || (CHAR) == 'R')
  42
  43 /* This defines which multi-letter switches take arguments.  */
  44
  45 #define FBSD_WORD_SWITCH_TAKES_ARG(STR)                                 \
  46   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)                                  \
  47    || !strcmp ((STR), "rpath") || !strcmp ((STR), "rpath-link")         \
  48    || !strcmp ((STR), "soname") || !strcmp ((STR), "defsym")            \
  49    || !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker"))
  50
  51 #define FBSD_TARGET_OS_CPP_BUILTINS()                                   \
  52   do                                                                    \
  53     {                                                                   \
  54         builtin_define_with_int_value ("__FreeBSD__", FBSD_MAJOR);      \
  55         builtin_define_std ("unix");                                    \
  56         builtin_define ("__KPRINTF_ATTRIBUTE__");                       \
  57         builtin_assert ("system=unix");                                 \
  58         builtin_assert ("system=bsd");                                  \
  59         builtin_assert ("system=FreeBSD");                              \
  60         FBSD_TARGET_CPU_CPP_BUILTINS();                                 \
  61     }                                                                   \
  62   while (0)
  63
  64 /* Define the default FreeBSD-specific per-CPU hook code.  */
  65 #define FBSD_TARGET_CPU_CPP_BUILTINS() do {} while (0)
  66
  67 /* Provide a CPP_SPEC appropriate for FreeBSD.  We just deal with the GCC
  68    option `-posix', and PIC issues.  */
  69
  70 #define FBSD_CPP_SPEC "                                                 \
  71   %(cpp_cpu)                                                            \
  72   %(cpp_arch)                                                           \
  73   %{posix:-D_POSIX_SOURCE}"
  74
  75 /* Provide a STARTFILE_SPEC appropriate for FreeBSD.  Here we add
  76    the magical crtbegin.o file (see crtstuff.c) which provides part
  77         of the support for getting C++ file-scope static object constructed
  78         before entering `main'.  */
  79
  80 #define FBSD_STARTFILE_SPEC \
  81   "%{!shared: \
  82      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
  83                        %{!p:%{profile:gcrt1.o%s} \
  84                          %{!profile:crt1.o%s}}}} \
  85    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
  86
  87 /* Provide a ENDFILE_SPEC appropriate for FreeBSD.  Here we tack on
  88    the magical crtend.o file (see crtstuff.c) which provides part of
  89         the support for getting C++ file-scope static object constructed
  90         before entering `main', followed by a normal "finalizer" file,
  91         `crtn.o'.  */
  92
  93 #define FBSD_ENDFILE_SPEC \
  94   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
  95
  96 /* Provide a LIB_SPEC appropriate for FreeBSD as configured and as
  97    required by the user-land thread model.  Before __FreeBSD_version
  98    500016, select the appropriate libc, depending on whether we're
  99    doing profiling or need threads support.  At __FreeBSD_version
 100    500016 and later, when threads support is requested include both
 101    -lc and the threading lib instead of only -lc_r.  To make matters
 102    interesting, we can't actually use __FreeBSD_version provided by
 103    <osreldate.h> directly since it breaks cross-compiling.  As a final
 104    twist, make it a hard error if -pthread is provided on the command
 105    line and gcc was configured with --disable-threads (this will help
 106    avoid bug reports from users complaining about threading when they
 107    misconfigured the gcc bootstrap but are later consulting FreeBSD
 108    manual pages that refer to the mythical -pthread option).  */
 109
 110 /* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
 111    libc, depending on whether we're doing profiling or need threads support.
 112    (similar to the default, except no -lg, and no -p).  */
 113
 114 #ifdef FBSD_NO_THREADS
 115 #define FBSD_LIB_SPEC "                                                 \
 116   %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
 117 is built with the --enable-threads configure-time option.}              \
 118   %{!shared:                                                            \
 119     %{!pg: -lc}                                                         \
 120     %{pg:  -lc_p}                                                       \
 121   }"
 122 #else
 123 #if FBSD_MAJOR < 5
 124 #define FBSD_LIB_SPEC "                                                 \
 125   %{!shared:                                                            \
 126     %{!pg:                                                              \
 127       %{!pthread:-lc}                                                   \
 128       %{pthread:-lc_r}}                                                 \
 129     %{pg:                                                               \
 130       %{!pthread:-lc_p}                                                 \
 131       %{pthread:-lc_r_p}}                                               \
 132   }"
 133 #else
 134 #define FBSD_LIB_SPEC "                                                 \
 135   %{!shared:                                                            \
 136     %{!pg: %{pthread:-lpthread} -lc}                                    \
 137     %{pg:  %{pthread:-lpthread_p} -lc_p}                                \
 138   }"
 139 #endif
 140 #endif
 141
 142 #if FBSD_MAJOR < 6
 143 #define FBSD_DYNAMIC_LINKER "/usr/libexec/ld-elf.so.1"
 144 #else
 145 #define FBSD_DYNAMIC_LINKER "/libexec/ld-elf.so.1"
 146 #endif