freebsd.h revision 45670 
1/* $Id$ */
2/* Base configuration file for all FreeBSD targets.
3   Copyright (C) 1999 Free Software Foundation, Inc.
4
5This file is part of GNU CC.
6
7GNU CC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU CC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU CC; see the file COPYING.  If not, write to
19the Free Software Foundation, 59 Temple Place - Suite 330,
20Boston, MA 02111-1307, USA.  */
21
22/* Common FreeBSD configuration.
23   All FreeBSD architectures should include this file, which will specify
24   their commonalities.
25   Adapted from /usr/src/contrib/gcc/config/i386/freebsd.h &
26   egcs/gcc/config/i386/freebsd-elf.h version by David O'Brien  */
27
28
29/* Don't assume anything about the header files. */
30#undef NO_IMPLICIT_EXTERN_C
31#define NO_IMPLICIT_EXTERN_C
32
33/* This defines which switch letters take arguments.  On svr4, most of
34   the normal cases (defined in gcc.c) apply, and we also have -h* and
35   -z* options (for the linker).  We have a slightly different mix.  We
36   have -R (alias --rpath), no -z, --soname (-h), --assert etc. */
37
38#undef SWITCH_TAKES_ARG
39#define SWITCH_TAKES_ARG(CHAR) \
40  (   (CHAR) == 'D' \
41   || (CHAR) == 'U' \
42   || (CHAR) == 'o' \
43   || (CHAR) == 'e' \
44   || (CHAR) == 'T' \
45   || (CHAR) == 'u' \
46   || (CHAR) == 'I' \
47   || (CHAR) == 'm' \
48   || (CHAR) == 'x' \
49   || (CHAR) == 'L' \
50   || (CHAR) == 'A' \
51   || (CHAR) == 'V' \
52   || (CHAR) == 'B' \
53   || (CHAR) == 'b' \
54   || (CHAR) == 'h' \
55   || (CHAR) == 'z' /* ignored by ld */ \
56   || (CHAR) == 'R')
57
58#undef WORD_SWITCH_TAKES_ARG
59#define WORD_SWITCH_TAKES_ARG(STR)					\
60  (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)					\
61   || !strcmp (STR, "rpath") || !strcmp (STR, "rpath-link")		\
62   || !strcmp (STR, "soname") || !strcmp (STR, "defsym") 		\
63   || !strcmp (STR, "assert") || !strcmp (STR, "dynamic-linker"))
64
65/* Place spaces around this string.  We depend on string splicing to produce
66   the final CPP_PREDEFINES value.  */
67#define CPP_FBSD_PREDEFINES " -Dunix -D__FreeBSD__=4 -D__FreeBSD_cc_version=400002 -Asystem(unix) -Asystem(FreeBSD) "
68
69/* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
70   libc, depending on whether we're doing profiling.
71   (like the default, except no -lg, and no -p.  */
72#undef LIB_SPEC
73#define LIB_SPEC "%{!shared:%{!pg:%{!pthread:%{!kthread:-lc}%{kthread:-lpthread -lc}}%{pthread:-lc_r}}%{pg:%{!pthread:%{!kthread:-lc_p}%{kthread:-lpthread_p -lc_p}}%{pthread:-lc_r_p}}}"
74
75/* Let gcc locate this for us according to the -m rules */
76#undef LIBGCC_SPEC
77#define LIBGCC_SPEC \
78 "%{!shared:%{!pthread:%{!kthread:libgcc.a%s}}%{pthread|kthread:libgcc_r.a%s}}"
79
80
81/* Code generation parameters.  */
82
83/* Don't default to pcc-struct-return, because gcc is the only compiler, and
84   we want to retain compatibility with older gcc versions.
85   (even though the svr4 ABI for the i386 says that records and unions are
86   returned in memory)  */
87#undef DEFAULT_PCC_STRUCT_RETURN
88#define DEFAULT_PCC_STRUCT_RETURN 0
89
90/* Ensure we the configuration knows our system correctly so we can link with
91   libraries compiled with the native cc. */
92#undef NO_DOLLAR_IN_LABEL
93
94/* Use more efficient ``thunks'' to implement C++ vtables. */
95#undef DEFAULT_VTABLE_THUNKS
96#define DEFAULT_VTABLE_THUNKS 1
97
98
99/* Miscellaneous parameters.  */
100
101/* Tell libgcc2.c that FreeBSD targets support atexit(3).  */
102#define HAVE_ATEXIT
103
104
105/* FREEBSD_NATIVE is defined when gcc is integrated into the FreeBSD
106   source tree so it can be configured appropriately without using
107   the GNU configure/build mechanism. */
108
109#ifdef FREEBSD_NATIVE
110
111/* Look for the include files in the system-defined places.  */
112
113#define GPLUSPLUS_INCLUDE_DIR		"/usr/include/g++"
114#define GCC_INCLUDE_DIR			"/usr/include"
115
116/* Now that GCC knows what the include path applies to, put the G++ one first.
117   C++ can now have include files that override the default C ones.  */
118#undef INCLUDE_DEFAULTS
119#define INCLUDE_DEFAULTS			\
120  {						\
121    { GPLUSPLUS_INCLUDE_DIR, "C++", 1, 1 },	\
122    { GCC_INCLUDE_DIR, "GCC", 0, 0 },		\
123    { 0, 0, 0, 0 }				\
124  }
125
126/* Under FreeBSD, the normal location of the compiler back ends is the
127   /usr/libexec directory.  */
128
129#undef STANDARD_EXEC_PREFIX
130#undef TOOLDIR_BASE_PREFIX
131#undef MD_EXEC_PREFIX
132
133#define STANDARD_EXEC_PREFIX		"/usr/libexec/"
134#define TOOLDIR_BASE_PREFIX		"/usr/libexec/"
135#define MD_EXEC_PREFIX			"/usr/libexec/"
136
137/* Under FreeBSD, the normal location of the various *crt*.o files is the
138   /usr/lib directory.  */
139
140#undef STANDARD_STARTFILE_PREFIX
141#define STANDARD_STARTFILE_PREFIX	"/usr/lib/"
142
143/* FreeBSD is 4.4BSD derived */
144#define bsd4_4
145
146#endif /* FREEBSD_NATIVE */
147