gcc/config/freebsd.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/i386/freebsd-elf.h by
  25    David O'Brien <obrien@FreeBSD.org>.
  26    Further work by David O'Brien <obrien@FreeBSD.org> and
  27    Loren J. Rittle <ljrittle@acm.org>.  */
  28
  29
  30 /* In case we need to know.  */
  31 #define USING_CONFIG_FREEBSD 1
  32
  33 /* This defines which switch letters take arguments.  On FreeBSD, most of
  34    the normal cases (defined in gcc.c) apply, and we also have -h* and
  35    -z* options (for the linker) (coming from SVR4).
  36    We also have -R (alias --rpath), no -z, --soname (-h), --assert etc.  */
  37
  38 #undef  SWITCH_TAKES_ARG
  39 #define SWITCH_TAKES_ARG(CHAR) (FBSD_SWITCH_TAKES_ARG(CHAR))
  40
  41 #undef  WORD_SWITCH_TAKES_ARG
  42 #define WORD_SWITCH_TAKES_ARG(STR) (FBSD_WORD_SWITCH_TAKES_ARG(STR))
  43
  44 #undef  CPP_PREDEFINES
  45 #define CPP_PREDEFINES FBSD_CPP_PREDEFINES
  46
  47 #undef  CPP_SPEC
  48 #define CPP_SPEC FBSD_CPP_SPEC
  49
  50 #undef  STARTFILE_SPEC
  51 #define STARTFILE_SPEC FBSD_STARTFILE_SPEC
  52
  53 #undef  ENDFILE_SPEC
  54 #define ENDFILE_SPEC FBSD_ENDFILE_SPEC
  55
  56 #undef  LIB_SPEC
  57 #define LIB_SPEC FBSD_LIB_SPEC
  58
  59
  60 /************************[  Target stuff  ]***********************************/
  61
  62 /* Don't assume anything about the header files.  */
  63 #undef  NO_IMPLICIT_EXTERN_C
  64 #define NO_IMPLICIT_EXTERN_C
  65
  66 /* Allow #sccs in preprocessor.  */
  67 #undef  SCCS_DIRECTIVE
  68 #define SCCS_DIRECTIVE
  69
  70 /* Make gcc agree with FreeBSD's standard headers (<machine/ansi.h>, etc...)  */
  71
  72 #undef  WCHAR_TYPE
  73 #define WCHAR_TYPE "int"
  74
  75 #undef  WCHAR_UNSIGNED
  76 #define WCHAR_UNSIGNED 0
  77
  78 /* Code generation parameters.  */
  79
  80 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  81    we want to retain compatibility with older gcc versions
  82    (even though the SVR4 ABI for the i386 says that records and unions are
  83    returned in memory).  */
  84 #undef  DEFAULT_PCC_STRUCT_RETURN
  85 #define DEFAULT_PCC_STRUCT_RETURN 0
  86
  87 /* Use periods rather than dollar signs in special g++ assembler names.
  88    This ensures the configuration knows our system correctly so we can link
  89    with libraries compiled with the native cc.  */
  90 #undef NO_DOLLAR_IN_LABEL
  91
  92 /* Used by libgcc2.c.  We support file locking with fcntl / F_SETLKW.
  93    This enables the test coverage code to use file locking when exiting a
  94    program, which avoids race conditions if the program has forked.  */
  95 #define TARGET_HAS_F_SETLKW
  96
  97 /* The prefix to add to user-visible assembler symbols.
  98    For System V Release 4 & ELF the convention is *not* to prepend a leading
  99    underscore onto user-level symbol names. Some CPU files such as
 100    config/sparc/sparc.h set this wrong for ELF.  */
 101
 102 #undef  USER_LABEL_PREFIX
 103 #define USER_LABEL_PREFIX ""
 104
 105 /* Handle #pragma weak and #pragma pack.  */
 106 #undef  HANDLE_SYSV_PRAGMA
 107 #define HANDLE_SYSV_PRAGMA
 108
 109 /************************[  Assembler stuff  ]********************************/
 110
 111 #undef  IDENT_ASM_OP
 112 #define IDENT_ASM_OP "\t.ident\t"
 113
 114 /************************[  Debugger stuff  ]*********************************/
 115
 116 /* All ELF targets can support DWARF-2.  */
 117 #undef  DWARF2_DEBUGGING_INFO
 118 #define DWARF2_DEBUGGING_INFO
 119
 120 /* This is BSD, so we want the DBX format.  */
 121 #undef  DBX_DEBUGGING_INFO
 122 #define DBX_DEBUGGING_INFO
 123
 124 /* Even though this is BSD, ELF and the GNU tools operates better with dwarf2
 125    than stabs.  Since we don't have any native tools to be compatible with,
 126    defaulting to dwarf2 is OK.  */
 127 #undef  PREFERRED_DEBUGGING_TYPE
 128 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG