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comparison gcc/ada/link.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 /****************************************************************************
2 * *
3 * GNAT COMPILER COMPONENTS *
4 * *
5 * L I N K *
6 * *
7 * C Implementation File *
8 * *
9 * Copyright (C) 1992-2017, Free Software Foundation, Inc. *
10 * *
11 * GNAT is free software; you can redistribute it and/or modify it under *
12 * terms of the GNU General Public License as published by the Free Soft- *
13 * ware Foundation; either version 3, or (at your option) any later ver- *
14 * sion. GNAT is distributed in the hope that it will be useful, but WITH- *
15 * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
16 * or FITNESS FOR A PARTICULAR PURPOSE. *
17 * *
18 * As a special exception under Section 7 of GPL version 3, you are granted *
19 * additional permissions described in the GCC Runtime Library Exception, *
20 * version 3.1, as published by the Free Software Foundation. *
21 * *
22 * You should have received a copy of the GNU General Public License and *
23 * a copy of the GCC Runtime Library Exception along with this program; *
24 * see the files COPYING3 and COPYING.RUNTIME respectively. If not, see *
25 * <http://www.gnu.org/licenses/>. *
26 * *
27 * GNAT was originally developed by the GNAT team at New York University. *
28 * Extensive contributions were provided by Ada Core Technologies Inc. *
29 * *
30 ****************************************************************************/
31
32 /* This file contains host-specific parameters describing the behavior of the
33 linker. It is used by gnatlink as well as all tools that use Mlib. */
34
35 #ifdef __cplusplus
36 extern "C" {
37 #endif
38
39 #ifdef IN_GCC
40 #include "auto-host.h"
41 #endif
42
43 #include <string.h>
44
45 /* objlist_file_supported is set to 1 when the system linker allows */
46 /* response file, that is a file that contains the list of object files. */
47 /* This is useful on systems where the command line length is limited, */
48 /* meaning that putting all the object files on the command line can */
49 /* result in an unacceptable limit on the number of files. */
50
51 /* object_file_option denotes the system dependent linker option which */
52 /* allows object file names to be placed in a file and then passed to */
53 /* the linker. object_file_option must be set if objlist_file_supported */
54 /* is set to 1. */
55
56 /* link_max is a conservative system specific threshold (in bytes) of the */
57 /* argument length passed to the linker which will trigger a file being */
58 /* used instead of the command line directly. If the argument length is */
59 /* greater than this threshold, then an objlist_file will be generated */
60 /* and object_file_option and objlist_file_supported must be set. If */
61 /* objlist_file_supported is set to 0 (unsupported), then link_max is */
62 /* set to 2**31-1 so that the limit will never be exceeded. */
63
64 /* run_path_option is the system dependent linker option which specifies */
65 /* the run time path to use when loading dynamic libraries. This should */
66 /* be set to the null string if the system does not support dynamic */
67 /* loading of libraries. */
68
69 /* shared_libgnat_default gives the system dependent link method that */
70 /* be used by default for linking libgnat (shared or static) */
71
72 /* shared_libgcc_default gives the system dependent link method that */
73 /* be used by default for linking libgcc (shared or static) */
74
75 /* separate_run_path_options is set to 1 when separate "rpath" arguments */
76 /* must be passed to the linker for each directory in the rpath. */
77
78 /* default_libgcc_subdir is the subdirectory name (from the installation */
79 /* root) where we may find a shared libgcc to use by default. */
80
81 #define SHARED 'H'
82 #define STATIC 'T'
83
84 #if defined (__WIN32)
85 const char *__gnat_object_file_option = "-Wl,@";
86 const char *__gnat_run_path_option = "";
87 int __gnat_link_max = 30000;
88 unsigned char __gnat_objlist_file_supported = 1;
89 char __gnat_shared_libgnat_default = STATIC;
90 char __gnat_shared_libgcc_default = STATIC;
91 const char *__gnat_object_library_extension = ".a";
92 unsigned char __gnat_separate_run_path_options = 0;
93 const char *__gnat_default_libgcc_subdir = "lib";
94
95 #elif defined (__hpux__)
96 const char *__gnat_object_file_option = "-Wl,-c,";
97 const char *__gnat_run_path_option = "-Wl,+b,";
98 int __gnat_link_max = 5000;
99 unsigned char __gnat_objlist_file_supported = 1;
100 char __gnat_shared_libgnat_default = STATIC;
101 char __gnat_shared_libgcc_default = STATIC;
102 const char *__gnat_object_library_extension = ".a";
103 unsigned char __gnat_separate_run_path_options = 0;
104 const char *__gnat_default_libgcc_subdir = "lib";
105
106 #elif defined (__FreeBSD__) || defined (__DragonFly__) \
107 || defined (__NetBSD__) || defined (__OpenBSD__)
108 const char *__gnat_object_file_option = "-Wl,@";
109 const char *__gnat_run_path_option = "-Wl,-rpath,";
110 char __gnat_shared_libgnat_default = STATIC;
111 char __gnat_shared_libgcc_default = STATIC;
112 int __gnat_link_max = 8192;
113 unsigned char __gnat_objlist_file_supported = 1;
114 const char *__gnat_object_library_extension = ".a";
115 unsigned char __gnat_separate_run_path_options = 0;
116 const char *__gnat_default_libgcc_subdir = "lib";
117
118 #elif defined (__APPLE__)
119 const char *__gnat_object_file_option = "-Wl,-filelist,";
120 const char *__gnat_run_path_option = "-Wl,-rpath,";
121 char __gnat_shared_libgnat_default = STATIC;
122 char __gnat_shared_libgcc_default = SHARED;
123 int __gnat_link_max = 262144;
124 unsigned char __gnat_objlist_file_supported = 1;
125 const char *__gnat_object_library_extension = ".a";
126 unsigned char __gnat_separate_run_path_options = 1;
127 const char *__gnat_default_libgcc_subdir = "lib";
128
129 #elif defined (__linux__) || defined (__GLIBC__)
130 const char *__gnat_object_file_option = "-Wl,@";
131 const char *__gnat_run_path_option = "-Wl,-rpath,";
132 char __gnat_shared_libgnat_default = STATIC;
133 char __gnat_shared_libgcc_default = STATIC;
134 int __gnat_link_max = 8192;
135 unsigned char __gnat_objlist_file_supported = 1;
136 const char *__gnat_object_library_extension = ".a";
137 unsigned char __gnat_separate_run_path_options = 0;
138 #if defined (__x86_64)
139 # if defined (__LP64__)
140 const char *__gnat_default_libgcc_subdir = "lib64";
141 # else
142 const char *__gnat_default_libgcc_subdir = "libx32";
143 # endif
144 #else
145 const char *__gnat_default_libgcc_subdir = "lib";
146 #endif
147
148 #elif defined (_AIX)
149 /* On AIX, even when with GNU ld we use native linker switches. This is
150 particularly important for '-f' as it should be interpreted by collect2. */
151
152 const char *__gnat_object_file_option = "-Wl,-f,";
153 const char *__gnat_run_path_option = "";
154 char __gnat_shared_libgnat_default = STATIC;
155 char __gnat_shared_libgcc_default = STATIC;
156 int __gnat_link_max = 15000;
157 unsigned char __gnat_objlist_file_supported = 1;
158 const char *__gnat_object_library_extension = ".a";
159 unsigned char __gnat_separate_run_path_options = 0;
160 const char *__gnat_default_libgcc_subdir = "lib";
161
162 #elif (HAVE_GNU_LD)
163 /* These are the settings for all systems that use gnu ld. GNU style response
164 file is supported, the shared library default is STATIC. */
165
166 const char *__gnat_object_file_option = "-Wl,@";
167 const char *__gnat_run_path_option = "";
168 char __gnat_shared_libgnat_default = STATIC;
169 char __gnat_shared_libgcc_default = STATIC;
170 int __gnat_link_max = 8192;
171 unsigned char __gnat_objlist_file_supported = 1;
172 const char *__gnat_object_library_extension = ".a";
173 unsigned char __gnat_separate_run_path_options = 0;
174 const char *__gnat_default_libgcc_subdir = "lib";
175
176 #elif defined (VMS)
177 const char *__gnat_object_file_option = "";
178 const char *__gnat_run_path_option = "";
179 char __gnat_shared_libgnat_default = STATIC;
180 char __gnat_shared_libgcc_default = STATIC;
181 int __gnat_link_max = 2147483647;
182 unsigned char __gnat_objlist_file_supported = 0;
183 const char *__gnat_object_library_extension = ".olb";
184 unsigned char __gnat_separate_run_path_options = 0;
185 const char *__gnat_default_libgcc_subdir = "lib";
186
187 #elif defined (__sun__)
188 const char *__gnat_object_file_option = "";
189 const char *__gnat_run_path_option = "-Wl,-R";
190 char __gnat_shared_libgnat_default = STATIC;
191 char __gnat_shared_libgcc_default = STATIC;
192 int __gnat_link_max = 2147483647;
193 unsigned char __gnat_objlist_file_supported = 0;
194 const char *__gnat_object_library_extension = ".a";
195 unsigned char __gnat_separate_run_path_options = 0;
196 #if defined (__sparc_v9__) || defined (__sparcv9)
197 const char *__gnat_default_libgcc_subdir = "lib/sparcv9";
198 #elif defined (__x86_64)
199 const char *__gnat_default_libgcc_subdir = "lib/amd64";
200 #else
201 const char *__gnat_default_libgcc_subdir = "lib";
202 #endif
203
204 #elif defined (__svr4__) && defined (__i386__)
205 const char *__gnat_object_file_option = "";
206 const char *__gnat_run_path_option = "";
207 char __gnat_shared_libgnat_default = STATIC;
208 char __gnat_shared_libgcc_default = STATIC;
209 int __gnat_link_max = 2147483647;
210 unsigned char __gnat_objlist_file_supported = 0;
211 const char *__gnat_object_library_extension = ".a";
212 unsigned char __gnat_separate_run_path_options = 0;
213 const char *__gnat_default_libgcc_subdir = "lib";
214
215 #else
216
217 /* These are the default settings for all other systems. No response file
218 is supported, the shared library default is STATIC. */
219 const char *__gnat_run_path_option = "";
220 const char *__gnat_object_file_option = "";
221 char __gnat_shared_libgnat_default = STATIC;
222 char __gnat_shared_libgcc_default = STATIC;
223 int __gnat_link_max = 2147483647;
224 unsigned char __gnat_objlist_file_supported = 0;
225 const char *__gnat_object_library_extension = ".a";
226 unsigned char __gnat_separate_run_path_options = 0;
227 const char *__gnat_default_libgcc_subdir = "lib";
228 #endif
229
230 #ifdef __cplusplus
231 }
232 #endif