1 /* ld.h -- general linker header file
2 Copyright (C) 1991-2023 Free Software Foundation, Inc.
4 This file is part of the GNU Binutils.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
32 /* The Solaris version of locale.h always includes libintl.h. If we have
33 been configured with --disable-nls then ENABLE_NLS will not be defined
34 and the dummy definitions of bindtextdomain (et al) below will conflict
35 with the defintions in libintl.h. So we define these values to prevent
36 the bogus inclusion of libintl.h. */
38 # define _LIBGETTEXT_H
44 # define _(String) gettext (String)
46 # define N_(String) gettext_noop (String)
48 # define N_(String) (String)
51 # define gettext(Msgid) (Msgid)
52 # define dgettext(Domainname, Msgid) (Msgid)
53 # define dcgettext(Domainname, Msgid, Category) (Msgid)
54 # define ngettext(Msgid1, Msgid2, n) \
55 (n == 1 ? Msgid1 : Msgid2)
56 # define dngettext(Domainname, Msgid1, Msgid2, n) \
57 (n == 1 ? Msgid1 : Msgid2)
58 # define dcngettext(Domainname, Msgid1, Msgid2, n, Category) \
59 (n == 1 ? Msgid1 : Msgid2)
60 # define textdomain(Domainname) do {} while (0)
61 # define bindtextdomain(Domainname, Dirname) do {} while (0)
62 # define _(String) (String)
63 # define N_(String) (String)
66 /* Look in this environment name for the linker to pretend to be */
67 #define EMULATION_ENVIRON "LDEMULATION"
68 /* If in there look for the strings: */
70 /* Look in this variable for a target format */
71 #define TARGET_ENVIRON "GNUTARGET"
73 /* Input sections which are put in a section of this name are actually
75 #define DISCARD_SECTION_NAME "/DISCARD/"
77 /* A file name list. */
78 typedef struct name_list
81 struct name_list
*next
;
85 typedef enum {sort_none
, sort_ascending
, sort_descending
} sort_order
;
87 /* A wildcard specification. */
91 none
, by_name
, by_alignment
, by_name_alignment
, by_alignment_name
,
92 by_none
, by_init_priority
95 extern sort_type sort_section
;
100 struct name_list
*exclude_name_list
;
101 struct flag_info
*section_flag_list
;
102 size_t namelen
, prefixlen
, suffixlen
;
108 struct wildcard_list
*next
;
109 struct wildcard_spec spec
;
112 #define BYTE_SIZE (1)
113 #define SHORT_SIZE (2)
114 #define LONG_SIZE (4)
115 #define QUAD_SIZE (8)
117 enum endian_enum
{ ENDIAN_UNSET
= 0, ENDIAN_BIG
, ENDIAN_LITTLE
};
121 /* 1 => assign space to common symbols even if `relocatable_output'. */
122 bool force_common_definition
;
124 /* If TRUE, build MIPS embedded PIC relocation tables in the output
126 bool embedded_relocs
;
128 /* If TRUE, force generation of a file with a .exe file. */
129 bool force_exe_suffix
;
131 /* If TRUE, generate a cross reference report. */
134 /* If TRUE (which is the default), warn about mismatched input
138 /* Warn on attempting to open an incompatible library during a library
140 bool warn_search_mismatch
;
142 /* If non-zero check section addresses, once computed,
143 for overlaps. Relocatable links only check when this is > 0. */
144 signed char check_section_addresses
;
146 /* If TRUE allow the linking of input files in an unknown architecture
147 assuming that the user knows what they are doing. This was the old
148 behaviour of the linker. The new default behaviour is to reject such
150 bool accept_unknown_input_arch
;
152 /* Name of the import library to generate. */
153 char *out_implib_filename
;
155 /* If TRUE we'll just print the default output on stdout. */
156 bool print_output_format
;
158 /* If set, display the target memory usage (per memory region). */
159 bool print_memory_usage
;
161 /* Should we force section groups to be resolved? Controlled with
162 --force-group-allocation on the command line or FORCE_GROUP_ALLOCATION
163 in the linker script. */
164 bool force_group_allocation
;
166 /* Big or little endian as set on command line. */
167 enum endian_enum endian
;
169 /* Name of runtime interpreter to invoke. */
172 /* Name to give runtime library from the -soname argument. */
175 /* Runtime library search path from the -rpath argument. */
178 /* Link time runtime library search path from the -rpath-link
182 /* Name of shared object whose symbol table should be filtered with
183 this shared object. From the --filter option. */
186 /* Name of shared object for whose symbol table this shared object
187 is an auxiliary filter. From the --auxiliary option. */
188 char **auxiliary_filters
;
190 /* A version symbol to be applied to the symbol names found in the
191 .exports sections. */
192 char *version_exports_section
;
194 /* Default linker script. */
195 char *default_script
;
198 extern args_type command_line
;
200 typedef int token_code_type
;
202 /* Different ways we can handle orphan sections. */
204 enum orphan_handling_enum
206 /* The classic strategy, find a suitable section to place the orphan
208 orphan_handling_place
= 0,
210 /* Discard any orphan sections as though they were assign to the section
212 orphan_handling_discard
,
214 /* Find somewhere to place the orphan section, as with
215 ORPHAN_HANDLING_PLACE, but also issue a warning. */
216 orphan_handling_warn
,
218 /* Issue a fatal error if any orphan sections are found. */
219 orphan_handling_error
,
224 bool magic_demand_paged
;
225 bool make_executable
;
227 /* If TRUE, -shared is supported. */
228 /* ??? A better way to do this is perhaps to define this in the
229 ld_emulation_xfer_struct since this is really a target dependent
233 /* If TRUE, build constructors. */
234 bool build_constructors
;
236 /* If TRUE, warn about any constructors. */
237 bool warn_constructors
;
239 /* If TRUE, warn about merging common symbols with others. */
242 /* If TRUE, only warn once about a particular undefined symbol. */
245 /* How should we deal with orphan sections. */
246 enum orphan_handling_enum orphan_handling
;
248 /* If TRUE, warn if multiple global-pointers are needed (Alpha
250 bool warn_multiple_gp
;
252 /* If TRUE, warn if the starting address of an output section
253 changes due to the alignment of an input section. */
254 bool warn_section_align
;
256 /* If TRUE, warning messages are fatal. */
259 /* If TRUE, warning and error messages are ignored. */
262 sort_order sort_common
;
268 /* If set, orphan input sections will be mapped to separate output
270 bool unique_orphan_sections
;
272 /* If set, only search library directories explicitly selected
273 on the command line. */
274 bool only_cmd_line_lib_dirs
;
276 /* If set, numbers and absolute symbols are simply treated as
277 numbers everywhere. */
280 /* If set, code and non-code sections should never be in one segment. */
283 /* If set, generation of ELF section header should be suppressed. */
284 bool no_section_header
;
286 /* The rpath separation character. Usually ':'. */
287 char rpath_separator
;
292 char *dependency_file
;
294 unsigned int split_by_reloc
;
295 bfd_size_type split_by_file
;
297 /* The size of the hash table to use. */
298 unsigned long hash_table_size
;
300 /* If set, print discarded sections in map file output. */
301 bool print_map_discarded
;
303 /* If set, print local symbols in map file output. */
304 bool print_map_locals
;
306 /* If set, emit the names and types of statically-linked variables
310 /* If set, share only duplicated types in CTF, rather than sharing
311 all types that are not in conflict. */
312 bool ctf_share_duplicated
;
314 /* Compress DWARF debug sections. */
315 enum compressed_debug_section_type compress_debug
;
318 extern ld_config_type config
;
320 extern FILE * saved_script_handle
;
321 extern bool force_make_executable
;
323 extern int yyparse (void);
324 extern void add_cref (const char *, bfd
*, asection
*, bfd_vma
);
325 extern bool handle_asneeded_cref (bfd
*, enum notice_asneeded_action
);
326 extern void output_cref (FILE *);
327 extern void check_nocrossrefs (void);
328 extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN
;
330 /* If gcc >= 2.6, we can give a function name, too. */
331 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
332 #define __PRETTY_FUNCTION__ NULL
336 #define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)