gcc44: Instruct linkers to create GNU hash tables
[dragonfly.git] / contrib / gcc-4.4 / gcc / config / dragonfly.h
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1/* Base configuration file for all DragonFly targets.
2 Copyright (C) 1999, 2000, 2001, 2007, 2008 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC 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 3, or (at your option)
9any later version.
10
11GCC 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 GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
19
18cb0187 20/* Common DragonFly configuration.
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21 All DragonFly architectures should include this file, which will specify
22 their commonalities.
23
24 Adapted from gcc/config/freebsd.h by
25 Joerg Sonnenberger <joerg@bec.de>
26
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27 Adapted from gcc/config/i386/freebsd-elf.h by
28 David O'Brien <obrien@FreeBSD.org>.
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29 Further work by David O'Brien <obrien@FreeBSD.org> and
30 Loren J. Rittle <ljrittle@acm.org>. */
31
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32
33/* This defines which switch letters take arguments. On DragonFly, 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) \
40 (DEFAULT_SWITCH_TAKES_ARG (CHAR) \
41 || (CHAR) == 'h' \
42 || (CHAR) == 'z' /* ignored by ld */ \
43 || (CHAR) == 'R')
44
45
46#undef WORD_SWITCH_TAKES_ARG
47#define WORD_SWITCH_TAKES_ARG(STR) \
48 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
49 || !strcmp ((STR), "rpath") || !strcmp ((STR), "rpath-link") \
50 || !strcmp ((STR), "soname") || !strcmp ((STR), "defsym") \
51 || !strcmp ((STR), "assert") || !strcmp ((STR), "dynamic-linker"))
52
1cc7b376 53#define HANDLE_PRAGMA_PACK_PUSH_POP 1
b4190895 54
18cb0187 55/* JRM: 15 Nov 2010
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56 SWITCH_TAKES_ARG & WORD_SWITCH_TAKES_ARG removed due to poisoning
57 prior to gcc 4.6.0 release. Replaced with dragonfly.opt.
18cb0187 58 http://gcc.gnu.org/ml/gcc-patches/2010-10/msg02102.html
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59 http://gcc.gnu.org/ml/gcc-patches/2010-10/msg02373.html
60
61 HANDLE_PRAGMA_PACK_PUSH_POP poisoned by GCC 4.6.0
62 http://gcc.gnu.org/ml/gcc-patches/2010-11/msg02106.html */
18cb0187 63
53d7ad08 64#undef TARGET_OS_CPP_BUILTINS
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65#define TARGET_OS_CPP_BUILTINS() \
66 do \
67 { \
68 builtin_define_std ("unix"); \
69 builtin_define ("__DragonFly__"); \
70 builtin_assert ("system=unix"); \
71 builtin_assert ("system=bsd"); \
72 builtin_assert ("system=DragonFly"); \
73 } \
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74 while (0)
75
76#undef CPP_SPEC
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77#define CPP_SPEC \
78 "%(cpp_cpu) %(cpp_arch) %{posix:-D_POSIX_SOURCE}"
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79
80#undef STARTFILE_SPEC
81#define STARTFILE_SPEC \
82 "%{!shared: \
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83 %{pg:gcrt1.o%s} \
84 %{!pg: \
85 %{p:gcrt1.o%s} \
86 %{!p: \
87 %{profile: gcrt1.o%s} \
88 %{!profile: \
89 %{pie: Scrt1.o%s;:crt1.o%s}}}}} \
90 crti.o%s \
91 %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
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92
93#undef ENDFILE_SPEC
18cb0187 94#define ENDFILE_SPEC \
e101389c 95 "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
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96
97#undef LIB_SPEC
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98#define LIB_SPEC \
99 "%{pthread:-lpthread} -lc"
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100
101/* Provide a LINK_SPEC appropriate for DragonFly. Here we provide support
102 for the special GCC options -static and -shared, which allow us to
103 link things in one of these three modes by applying the appropriate
18cb0187 104 combinations of options at link-time.
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105
106 When the -shared link option is used a final link is not being
107 done. */
108
1617af9c 109#define DFBSD_LINK_SPEC \
18cb0187 110 "%{p:%nconsider using '-pg' instead of '-p' with gprof(1)} \
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111 %{v:-V} \
112 %{assert*} %{R*} %{rpath*} %{defsym*} \
113 %{shared:-Bshareable %{h*} %{soname*}} \
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114 %{!shared: \
115 %{!static: \
116 %{rdynamic:-export-dynamic} \
117 -dynamic-linker %(dfbsd_dynamic_linker) \
118 } \
119 %{static:-Bstatic}} \
120 %{!static:--hash-style=both} \
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121 %{symbolic:-Bsymbolic}"
122
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123#undef LINK_SPEC
124#define LINK_SPEC DFBSD_LINK_SPEC
125
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126#define DFBSD_DYNAMIC_LINKER \
127 "/usr/libexec/ld-elf.so.2"
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128
129#if defined(HAVE_LD_EH_FRAME_HDR)
f0a144b4 130#define LINK_EH_SPEC "--eh-frame-hdr"
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131#endif
132
133/* Use --as-needed -lgcc_s for eh support. */
134#ifdef HAVE_LD_AS_NEEDED
135#define USE_LD_AS_NEEDED 1
136#endif
137
138/************************[ Target stuff ]***********************************/
139
140/* All DragonFly Architectures support the ELF object file format. */
141#undef OBJECT_FORMAT_ELF
142#define OBJECT_FORMAT_ELF
143
144/* Don't assume anything about the header files. */
145#undef NO_IMPLICIT_EXTERN_C
146#define NO_IMPLICIT_EXTERN_C 1
147
148/* Make gcc agree with DragonFly's standard headers (<machine/stdint.h>, etc...) */
149
150#undef WCHAR_TYPE
151#define WCHAR_TYPE "int"
152
153/* Code generation parameters. */
154
155/* Use periods rather than dollar signs in special g++ assembler names.
156 This ensures the configuration knows our system correctly so we can link
157 with libraries compiled with the native cc. */
158#undef NO_DOLLAR_IN_LABEL
159
160/* Used by libgcc2.c. We support file locking with fcntl / F_SETLKW.
161 This enables the test coverage code to use file locking when exiting a
162 program, which avoids race conditions if the program has forked. */
163#define TARGET_POSIX_IO