gcc/config/freebsd.h

   1 /* Base configuration file for all FreeBSD targets.
   2    Copyright (C) 1999, 2000 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/i386/freebsd-elf.h by
  25    David O'Brien <obrien@FreeBSD.org>.  */
  26
  27
  28 /* This defines which switch letters take arguments.  On FreeBSD, most of
  29    the normal cases (defined in gcc.c) apply, and we also have -h* and
  30    -z* options (for the linker) (coming from SVR4).
  31    We also have -R (alias --rpath), no -z, --soname (-h), --assert etc.  */
  32
  33 #define FBSD_SWITCH_TAKES_ARG(CHAR)                                     \
  34   (DEFAULT_SWITCH_TAKES_ARG (CHAR)                                      \
  35     || (CHAR) == 'h'                                                    \
  36     || (CHAR) == 'z' /* ignored by ld */                                \
  37     || (CHAR) == 'R')
  38
  39 #undef SWITCH_TAKES_ARG
  40 #define SWITCH_TAKES_ARG(CHAR) (FBSD_SWITCH_TAKES_ARG(CHAR))
  41
  42 #define FBSD_WORD_SWITCH_TAKES_ARG(STR)                                 \
  43   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)                                  \
  44    || !strcmp ((STR), "rpath") || !strcmp ((STR), "rpath-link")         \
  45    || !strcmp ((STR), "soname") || !strcmp ((STR), "defsym")            \
  46    || !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker"))
  47
  48 #undef WORD_SWITCH_TAKES_ARG
  49 #define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR))
  50
  51 /* Provide a CPP_SPEC appropriate for FreeBSD.  We just deal with the GCC
  52    option `-posix', and PIC issues.  */
  53
  54 #undef CPP_SPEC
  55 #define CPP_SPEC "%(cpp_cpu)                                            \
  56   %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__}               \
  57   %{posix:-D_POSIX_SOURCE}"
  58
  59 /* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
  60    libc, depending on whether we're doing profiling or need threads support.
  61    (simular to the default, except no -lg, and no -p).  */
  62
  63 #undef  LIB_SPEC
  64 #define LIB_SPEC "                                                      \
  65   %{!shared:                                                            \
  66     %{!pg:                                                              \
  67       %{!pthread:-lc}                                                   \
  68       %{pthread:-lc_r}}                                                 \
  69     %{pg:                                                               \
  70       %{!pthread:-lc_p}                                                 \
  71       %{pthread:-lc_r_p}}                                               \
  72   }"
  73
  74
  75 /* Code generation parameters.  */
  76
  77 /* Make gcc agree with <machine/ansi.h>.  */
  78
  79 #undef WCHAR_TYPE
  80 #define WCHAR_TYPE "int"
  81
  82 #undef WCHAR_UNSIGNED
  83 #define WCHAR_UNSIGNED 0
  84
  85 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  86    we want to retain compatibility with older gcc versions
  87    (even though the SVR4 ABI for the i386 says that records and unions are
  88    returned in memory).  */
  89 #undef DEFAULT_PCC_STRUCT_RETURN
  90 #define DEFAULT_PCC_STRUCT_RETURN 0
  91
  92 /* Ensure we the configuration knows our system correctly so we can link with
  93    libraries compiled with the native cc.  */
  94 #undef NO_DOLLAR_IN_LABEL
  95
  96 /* Use more efficient ``thunks'' to implement C++ vtables.  */
  97 #undef DEFAULT_VTABLE_THUNKS
  98 #define DEFAULT_VTABLE_THUNKS 1
  99
 100 /* This is BSD, so use stabs instead of DWARF debug format.  */
 101 #undef PREFERRED_DEBUGGING_TYPE
 102 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 103
 104 #undef IDENT_ASM_OP
 105 #define IDENT_ASM_OP "\t.ident\t"
 106
 107 /* Output #ident as a .ident.  */
 108 #undef ASM_OUTPUT_IDENT
 109 #define ASM_OUTPUT_IDENT(FILE, NAME)                                    \
 110   fprintf ((FILE), "%s\"%s\"\n", IDENT_ASM_OP, (NAME));
 111
 112 /* Miscellaneous parameters.  */
 113
 114 /* Don't assume anything about the header files.  */
 115 #undef NO_IMPLICIT_EXTERN_C
 116 #define NO_IMPLICIT_EXTERN_C
 117
 118 /* Allow #sccs in preprocessor.  */
 119 #define SCCS_DIRECTIVE
 120
 121 /* Handle #pragma weak and #pragma pack.  */
 122 #define HANDLE_SYSV_PRAGMA