freebsd.h revision 45277 
1/* Base configuration file for all FreeBSD targets.
2   Copyright (C) 1999 Free Software Foundation, Inc.
3
4This file is part of GNU CC.
5
6GNU CC is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2, or (at your option)
9any later version.
10
11GNU CC is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GNU CC; see the file COPYING.  If not, write to
18the Free Software Foundation, 59 Temple Place - Suite 330,
19Boston, 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 /usr/src/contrib/gcc/config/i386/freebsd.h &
25   egcs/gcc/config/i386/freebsd-elf.h version by David O'Brien  */
26
27
28/* Don't assume anything about the header files. */
29#undef NO_IMPLICIT_EXTERN_C
30#define NO_IMPLICIT_EXTERN_C
31
32/* This defines which switch letters take arguments.  On svr4, most of
33   the normal cases (defined in gcc.c) apply, and we also have -h* and
34   -z* options (for the linker).  We have a slightly different mix.  We
35   have -R (alias --rpath), no -z, --soname (-h), --assert etc. */
36
37#undef SWITCH_TAKES_ARG
38#define SWITCH_TAKES_ARG(CHAR) \
39  (   (CHAR) == 'D' \
40   || (CHAR) == 'U' \
41   || (CHAR) == 'o' \
42   || (CHAR) == 'e' \
43   || (CHAR) == 'T' \
44   || (CHAR) == 'u' \
45   || (CHAR) == 'I' \
46   || (CHAR) == 'm' \
47   || (CHAR) == 'x' \
48   || (CHAR) == 'L' \
49   || (CHAR) == 'A' \
50   || (CHAR) == 'V' \
51   || (CHAR) == 'B' \
52   || (CHAR) == 'b' \
53   || (CHAR) == 'h' \
54   || (CHAR) == 'z' /* ignored by ld */ \
55   || (CHAR) == 'R')
56
57#undef WORD_SWITCH_TAKES_ARG
58#define WORD_SWITCH_TAKES_ARG(STR)					\
59  (DEFAULT_WORD_SWITCH_TAKES_ARG (STR)					\
60   || !strcmp (STR, "rpath") || !strcmp (STR, "rpath-link")		\
61   || !strcmp (STR, "soname") || !strcmp (STR, "defsym") 		\
62   || !strcmp (STR, "assert") || !strcmp (STR, "dynamic-linker"))
63
64
65#define CPP_FBSD_PREDEFINES "-Dunix -D__ELF__ -D__FreeBSD__=4 -D__FreeBSD_cc_version=400002 -Asystem(unix) -Asystem(FreeBSD)"
66
67
68/* Code generation parameters.  */
69
70/* Don't default to pcc-struct-return, because gcc is the only compiler, and
71   we want to retain compatibility with older gcc versions.
72   (even though the svr4 ABI for the i386 says that records and unions are
73   returned in memory)  */
74#undef DEFAULT_PCC_STRUCT_RETURN
75#define DEFAULT_PCC_STRUCT_RETURN 0
76
77/* Ensure we the configuration knows our system correctly so we can link with
78   libraries compiled with the native cc. */
79#undef NO_DOLLAR_IN_LABEL
80
81/* Use more efficient ``thunks'' to implement C++ vtables. */
82#undef DEFAULT_VTABLE_THUNKS
83#define DEFAULT_VTABLE_THUNKS 1
84
85
86/* Miscellaneous parameters.  */
87
88/* Tell libgcc2.c that FreeBSD targets support atexit(3).  */
89#define HAVE_ATEXIT
90
91
92/* FREEBSD_NATIVE is defined when gcc is integrated into the FreeBSD
93   source tree so it can be configured appropriately without using
94   the GNU configure/build mechanism. */
95
96#ifdef FREEBSD_NATIVE
97
98/* Look for the include files in the system-defined places.  */
99
100#define GPLUSPLUS_INCLUDE_DIR		"/usr/include/g++"
101#define GCC_INCLUDE_DIR			"/usr/include"
102
103/* Now that GCC knows what the include path applies to, put the G++ one first.
104   C++ can now have include files that override the default C ones.  */
105#undef INCLUDE_DEFAULTS
106#define INCLUDE_DEFAULTS			\
107  {						\
108    { GPLUSPLUS_INCLUDE_DIR, "C++", 1, 1 },	\
109    { GCC_INCLUDE_DIR, "GCC", 0, 0 },		\
110    { 0, 0, 0, 0 }				\
111  }
112
113/* Under FreeBSD, the normal location of the compiler back ends is the
114   /usr/libexec directory.  */
115
116#undef STANDARD_EXEC_PREFIX
117#undef TOOLDIR_BASE_PREFIX
118#undef MD_EXEC_PREFIX
119
120#define STANDARD_EXEC_PREFIX		"/usr/libexec/"
121#define TOOLDIR_BASE_PREFIX		"/usr/libexec/"
122#define MD_EXEC_PREFIX			"/usr/libexec/"
123
124/* Under FreeBSD, the normal location of the various *crt*.o files is the
125   /usr/lib directory.  */
126
127#undef STANDARD_STARTFILE_PREFIX
128#define STANDARD_STARTFILE_PREFIX	"/usr/lib/"
129
130/* FreeBSD is 4.4BSD derived */
131#define bsd4_4
132
133#endif /* FREEBSD_NATIVE */
134