1/* Common configuration file for NetBSD ELF targets.
2   Copyright (C) 2002 Free Software Foundation, Inc.
3   Contributed by Wasabi Systems, Inc.
4
5This file is part of GCC.
6
7GCC 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
12GCC 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 GCC; see the file COPYING.  If not, write to
19the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20Boston, MA 02110-1301, USA.  */
21
22/* TARGET_OS_CPP_BUILTINS() common to all NetBSD ELF targets.  */
23#define NETBSD_OS_CPP_BUILTINS_ELF()		\
24  do						\
25    {						\
26      NETBSD_OS_CPP_BUILTINS_COMMON();		\
27    }						\
28  while (0)
29
30/* This defines which switch letters take arguments.  On NetBSD, most
31   of the normal cases (defined by gcc.c) apply, and we also have -h*
32   and -z* options (for the linker) (coming from SVR4).  */
33
34#undef SWITCH_TAKES_ARG
35#define SWITCH_TAKES_ARG(CHAR)			\
36  (DEFAULT_SWITCH_TAKES_ARG (CHAR)		\
37   || (CHAR) == 'h'				\
38   || (CHAR) == 'z'				\
39   || (CHAR) == 'R')
40
41
42/* Provide a STARTFILE_SPEC appropriate for NetBSD ELF.  Here we
43   provide support for the special GCC option -static.  On ELF
44   targets, we also add the crtbegin.o file, which provides part
45   of the support for getting C++ file-scope static objects
46   constructed before entering "main".  */
47
48#define NETBSD_STARTFILE_SPEC	\
49  "%{!shared:			\
50     %{pg:gcrt0%O%s}		\
51     %{!pg:			\
52       %{p:gcrt0%O%s}		\
53       %{!p:crt0%O%s}}}		\
54   %:if-exists(crti%O%s)	\
55   %{static:%:if-exists-else(crtbeginT%O%s crtbegin%O%s)} \
56   %{!static: \
57     %{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}"
58
59#undef STARTFILE_SPEC
60#define STARTFILE_SPEC NETBSD_STARTFILE_SPEC
61
62
63/* Provide an ENDFILE_SPEC appropriate for NetBSD ELF.  Here we
64   add crtend.o, which provides part of the support for getting
65   C++ file-scope static objects deconstructed after exiting "main".  */
66
67#define NETBSD_ENDFILE_SPEC	\
68  "%{!shared:crtend%O%s} %{shared:crtendS%O%s} \
69   %:if-exists(crtn%O%s)"
70
71#undef ENDFILE_SPEC
72#define ENDFILE_SPEC NETBSD_ENDFILE_SPEC
73
74/* Provide a LINK_SPEC appropriate for NetBSD ELF.  Here we provide
75   support for the special GCC options -assert, -R, -rpath, -shared,
76   -nostdlib, -static, -rdynamic, and -dynamic-linker.
77
78   Target-specific code can use this in conjunction with any other
79   target-specific LINK_SPEC options.
80
81   Target-specific code must provide the %(netbsd_entry_point) spec.  */
82
83#define NETBSD_LINK_SPEC_ELF \
84  "%{assert*} %{R*} %{rpath*} \
85   %{shared:-shared} \
86   %{!shared: \
87     -dc -dp \
88     %{!nostdlib: \
89       %{!r*: \
90	 %{!e*:-e %(netbsd_entry_point)}}} \
91     %{!static: \
92       %{rdynamic:-export-dynamic} \
93       %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}} \
94     %{static:-static}}"
95