gcc/config/freebsd-spec.h

   1 /* Base configuration file for all FreeBSD targets.
   2    Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC 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 GNU CC 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 GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, 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         if (FBSD_MAJOR == 6)                                            \
  55           builtin_define ("__FreeBSD__=6");                             \
  56         else if (FBSD_MAJOR == 5)                                       \
  57           builtin_define ("__FreeBSD__=5");                             \
  58         else if (FBSD_MAJOR == 4)                                       \
  59           builtin_define ("__FreeBSD__=4");                             \
  60         else if (FBSD_MAJOR == 3)                                       \
  61           builtin_define ("__FreeBSD__=3");                             \
  62         else                                                            \
  63           builtin_define ("__FreeBSD__");                               \
  64         builtin_define_std ("unix");                                    \
  65         builtin_define ("__ELF__");                                     \
  66         builtin_define ("__KPRINTF_ATTRIBUTE__");                       \
  67         builtin_assert ("system=unix");                                 \
  68         builtin_assert ("system=bsd");                                  \
  69         builtin_assert ("system=FreeBSD");                              \
  70         FBSD_TARGET_CPU_CPP_BUILTINS();                                 \
  71     }                                                                   \
  72   while (0)
  73
  74 /* Define the default FreeBSD-specific per-CPU hook code. */
  75 #define FBSD_TARGET_CPU_CPP_BUILTINS() do {} while (0)
  76
  77 /* Provide a CPP_SPEC appropriate for FreeBSD.  We just deal with the GCC
  78    option `-posix', and PIC issues.  */
  79
  80 #define FBSD_CPP_SPEC "                                                 \
  81   %(cpp_cpu)                                                            \
  82   %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__}               \
  83   %{posix:-D_POSIX_SOURCE}"
  84
  85 /* Provide a STARTFILE_SPEC appropriate for FreeBSD.  Here we add
  86    the magical crtbegin.o file (see crtstuff.c) which provides part
  87         of the support for getting C++ file-scope static object constructed
  88         before entering `main'.  */
  89
  90 #define FBSD_STARTFILE_SPEC \
  91   "%{!shared: \
  92      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
  93                        %{!p:%{profile:gcrt1.o%s} \
  94                          %{!profile:crt1.o%s}}}} \
  95    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
  96
  97 /* Provide a ENDFILE_SPEC appropriate for FreeBSD.  Here we tack on
  98    the magical crtend.o file (see crtstuff.c) which provides part of
  99         the support for getting C++ file-scope static object constructed
 100         before entering `main', followed by a normal "finalizer" file,
 101         `crtn.o'.  */
 102
 103 #define FBSD_ENDFILE_SPEC \
 104   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
 105
 106 /* Provide a LIB_SPEC appropriate for FreeBSD as configured and as
 107    required by the user-land thread model.  Before __FreeBSD_version
 108    500016, select the appropriate libc, depending on whether we're
 109    doing profiling or need threads support.  At __FreeBSD_version
 110    500016 and later, when threads support is requested include both
 111    -lc and -lc_r instead of only -lc_r.  To make matters interesting,
 112    we can't actually use __FreeBSD_version provided by <osreldate.h>
 113    directly since it breaks cross-compiling.  As a final twist, make
 114    it a hard error if -pthread is provided on the command line and gcc
 115    was configured with --disable-threads (this will help avoid bug
 116    reports from users complaining about threading when they
 117    misconfigured the gcc bootstrap but are later consulting FreeBSD
 118    manual pages that refer to the mythical -pthread option).  */
 119
 120 /* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
 121    libc, depending on whether we're doing profiling or need threads support.
 122    (simular to the default, except no -lg, and no -p).  */
 123
 124 #ifdef FBSD_NO_THREADS
 125 #define FBSD_LIB_SPEC "                                                 \
 126   %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
 127 is built with the --enable-threads configure-time option.}              \
 128   %{!shared:                                                            \
 129     %{!pg: -lc}                                                         \
 130     %{pg:  -lc_p}                                                       \
 131   }"
 132 #else
 133 #if FBSD_MAJOR >= 5
 134 #define FBSD_LIB_SPEC "                                                 \
 135   %{!shared:                                                            \
 136     %{!pg: %{pthread:-lc_r} -lc}                                        \
 137     %{pg:  %{pthread:-lc_r_p} -lc_p}                                    \
 138   }"
 139 #else
 140 #define FBSD_LIB_SPEC "                                                 \
 141   %{!shared:                                                            \
 142     %{!pg:                                                              \
 143       %{!pthread:-lc}                                                   \
 144       %{pthread:-lc_r}}                                                 \
 145     %{pg:                                                               \
 146       %{!pthread:-lc_p}                                                 \
 147       %{pthread:-lc_r_p}}                                               \
 148   }"
 149 #endif
 150 #endif