freebsd.h revision 45474 
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/* Place spaces around this string.  We depend on string splicing to produce
65   the final CPP_PREDEFINES value.  */
66#define CPP_FBSD_PREDEFINES " -Dunix -D__FreeBSD__=4 -D__FreeBSD_cc_version=400002 -Asystem(unix) -Asystem(FreeBSD) "
67
68/* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
69   libc, depending on whether we're doing profiling.
70   (like the default, except no -lg, and no -p.  */
71#undef LIB_SPEC
72#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}}}"
73
74
75/* Code generation parameters.  */
76
77/* Don't default to pcc-struct-return, because gcc is the only compiler, and
78   we want to retain compatibility with older gcc versions.
79   (even though the svr4 ABI for the i386 says that records and unions are
80   returned in memory)  */
81#undef DEFAULT_PCC_STRUCT_RETURN
82#define DEFAULT_PCC_STRUCT_RETURN 0
83
84/* Ensure we the configuration knows our system correctly so we can link with
85   libraries compiled with the native cc. */
86#undef NO_DOLLAR_IN_LABEL
87
88/* Use more efficient ``thunks'' to implement C++ vtables. */
89#undef DEFAULT_VTABLE_THUNKS
90#define DEFAULT_VTABLE_THUNKS 1
91
92
93/* Miscellaneous parameters.  */
94
95/* Tell libgcc2.c that FreeBSD targets support atexit(3).  */
96#define HAVE_ATEXIT
97
98
99/* FREEBSD_NATIVE is defined when gcc is integrated into the FreeBSD
100   source tree so it can be configured appropriately without using
101   the GNU configure/build mechanism. */
102
103#ifdef FREEBSD_NATIVE
104
105/* Look for the include files in the system-defined places.  */
106
107#define GPLUSPLUS_INCLUDE_DIR		"/usr/include/g++"
108#define GCC_INCLUDE_DIR			"/usr/include"
109
110/* Now that GCC knows what the include path applies to, put the G++ one first.
111   C++ can now have include files that override the default C ones.  */
112#undef INCLUDE_DEFAULTS
113#define INCLUDE_DEFAULTS			\
114  {						\
115    { GPLUSPLUS_INCLUDE_DIR, "C++", 1, 1 },	\
116    { GCC_INCLUDE_DIR, "GCC", 0, 0 },		\
117    { 0, 0, 0, 0 }				\
118  }
119
120/* Under FreeBSD, the normal location of the compiler back ends is the
121   /usr/libexec directory.  */
122
123#undef STANDARD_EXEC_PREFIX
124#undef TOOLDIR_BASE_PREFIX
125#undef MD_EXEC_PREFIX
126
127#define STANDARD_EXEC_PREFIX		"/usr/libexec/"
128#define TOOLDIR_BASE_PREFIX		"/usr/libexec/"
129#define MD_EXEC_PREFIX			"/usr/libexec/"
130
131/* Under FreeBSD, the normal location of the various *crt*.o files is the
132   /usr/lib directory.  */
133
134#undef STANDARD_STARTFILE_PREFIX
135#define STANDARD_STARTFILE_PREFIX	"/usr/lib/"
136
137/* FreeBSD is 4.4BSD derived */
138#define bsd4_4
139
140#endif /* FREEBSD_NATIVE */
141