/* Linker file opening and searching.
- Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1991-2023 Free Software Foundation, Inc.
- This file is part of GLD, the Gnu Linker.
+ This file is part of the GNU Binutils.
- GLD is free software; you can redistribute it and/or modify
+ This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
- GLD is distributed in the hope that it will be useful,
+ This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with GLD; see the file COPYING. If not, write to the Free
- Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-/* ldfile.c: look after all the file stuff. */
-
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "bfdlink.h"
+#include "ctf-api.h"
#include "safe-ctype.h"
#include "ld.h"
#include "ldmisc.h"
#include "ldemul.h"
#include "libiberty.h"
#include "filenames.h"
-
-const char * ldfile_input_filename;
-bfd_boolean ldfile_assumed_script = FALSE;
-const char * ldfile_output_machine_name = "";
+#include <fnmatch.h>
+#if BFD_SUPPORTS_PLUGINS
+#include "plugin-api.h"
+#include "plugin.h"
+#endif /* BFD_SUPPORTS_PLUGINS */
+
+bool ldfile_assumed_script = false;
+const char *ldfile_output_machine_name = "";
unsigned long ldfile_output_machine;
enum bfd_architecture ldfile_output_architecture;
-search_dirs_type * search_head;
+search_dirs_type *search_head;
#ifdef VMS
-static char * slash = "";
+static char *slash = "";
#else
-#if defined (_WIN32) && ! defined (__CYGWIN32__)
-static char * slash = "\\";
+#if defined (_WIN32) && !defined (__CYGWIN32__)
+static char *slash = "\\";
#else
-static char * slash = "/";
+static char *slash = "/";
#endif
#endif
static search_arch_type *search_arch_head;
static search_arch_type **search_arch_tail_ptr = &search_arch_head;
+typedef struct input_remap
+{
+ const char * pattern; /* Pattern to match input files. */
+ const char * renamed; /* Filename to use if the pattern matches. */
+ struct input_remap * next; /* Link in a chain of these structures. */
+} input_remap;
+
+static struct input_remap * input_remaps = NULL;
+
+void
+ldfile_add_remap (const char * pattern, const char * renamed)
+{
+ struct input_remap * new_entry;
+
+ new_entry = xmalloc (sizeof * new_entry);
+ new_entry->pattern = xstrdup (pattern);
+ new_entry->next = NULL;
+
+ /* Look for special filenames that mean that the input file should be ignored. */
+ if (strcmp (renamed, "/dev/null") == 0
+ || strcmp (renamed, "NUL") == 0)
+ new_entry->renamed = NULL;
+ else
+ /* FIXME: Should we add sanity checking of the 'renamed' string ? */
+ new_entry->renamed = xstrdup (renamed);
+
+ /* It would be easier to add this new node at the start of the chain,
+ but users expect that remapping will occur in the order in which
+ they occur on the command line, and in the remapping files. */
+ if (input_remaps == NULL)
+ {
+ input_remaps = new_entry;
+ }
+ else
+ {
+ struct input_remap * i;
+
+ for (i = input_remaps; i->next != NULL; i = i->next)
+ ;
+ i->next = new_entry;
+ }
+}
+
+void
+ldfile_remap_input_free (void)
+{
+ while (input_remaps != NULL)
+ {
+ struct input_remap * i = input_remaps;
+
+ input_remaps = i->next;
+ free ((void *) i->pattern);
+ free ((void *) i->renamed);
+ free (i);
+ }
+}
+
+bool
+ldfile_add_remap_file (const char * file)
+{
+ FILE * f;
+
+ f = fopen (file, FOPEN_RT);
+ if (f == NULL)
+ return false;
+
+ size_t linelen = 256;
+ char * line = xmalloc (linelen);
+
+ do
+ {
+ char * p = line;
+ char * q;
+
+ /* Normally this would use getline(3), but we need to be portable. */
+ while ((q = fgets (p, linelen - (p - line), f)) != NULL
+ && strlen (q) == linelen - (p - line) - 1
+ && line[linelen - 2] != '\n')
+ {
+ line = xrealloc (line, 2 * linelen);
+ p = line + linelen - 1;
+ linelen += linelen;
+ }
+
+ if (q == NULL && p == line)
+ break;
+
+ p = strchr (line, '\n');
+ if (p)
+ *p = '\0';
+
+ /* Because the file format does not know any form of quoting we
+ can search forward for the next '#' character and if found
+ make it terminating the line. */
+ p = strchr (line, '#');
+ if (p)
+ *p = '\0';
+
+ /* Remove leading whitespace. NUL is no whitespace character. */
+ p = line;
+ while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
+ ++p;
+
+ /* If the line is blank it is ignored. */
+ if (*p == '\0')
+ continue;
+
+ char * pattern = p;
+
+ /* Advance past the pattern. We accept whitespace or '=' as an
+ end-of-pattern marker. */
+ while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
+ && *p != '\r' && *p != '\v')
+ ++p;
+
+ if (*p == '\0')
+ {
+ einfo ("%F%P: malformed remap file entry: %s\n", line);
+ continue;
+ }
+
+ * p++ = '\0';
+
+ /* Skip whitespace again. */
+ while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
+ ++p;
+
+ if (*p == '\0')
+ {
+ einfo ("%F%P: malformed remap file entry: %s\n", line);
+ continue;
+ }
+
+ char * rename = p;
+
+ /* Advance past the rename entry. */
+ while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
+ && *p != '\r' && *p != '\v')
+ ++p;
+ /* And terminate it. */
+ *p = '\0';
+
+ ldfile_add_remap (pattern, rename);
+ }
+ while (! feof (f));
+
+ free (line);
+ fclose (f);
+
+ return true;
+}
+
+const char *
+ldfile_possibly_remap_input (const char * filename)
+{
+ struct input_remap * i;
+
+ if (filename == NULL)
+ return NULL;
+
+ for (i = input_remaps; i != NULL; i = i->next)
+ {
+ if (fnmatch (i->pattern, filename, 0) == 0)
+ {
+ if (verbose)
+ {
+ if (strpbrk ((i->pattern), "?*[") != NULL)
+ {
+ if (i->renamed)
+ info_msg (_("remap input file '%s' to '%s' based upon pattern '%s'\n"),
+ filename, i->renamed, i->pattern);
+ else
+ info_msg (_("remove input file '%s' based upon pattern '%s'\n"),
+ filename, i->pattern);
+ }
+ else
+ {
+ if (i->renamed)
+ info_msg (_("remap input file '%s' to '%s'\n"),
+ filename, i->renamed);
+ else
+ info_msg (_("remove input file '%s'\n"),
+ filename);
+ }
+ }
+
+ return i->renamed;
+ }
+ }
+
+ return filename;
+}
+
+void
+ldfile_print_input_remaps (void)
+{
+ if (input_remaps == NULL)
+ return;
+
+ minfo (_("\nInput File Remapping\n\n"));
+
+ struct input_remap * i;
+
+ for (i = input_remaps; i != NULL; i = i->next)
+ minfo (_(" Pattern: %s\tMaps To: %s\n"), i->pattern,
+ i->renamed ? i->renamed : _("<discard>"));
+}
+
+
/* Test whether a pathname, after canonicalization, is the same or a
sub-directory of the sysroot directory. */
-static bfd_boolean
-is_sysrooted_pathname (const char *name, bfd_boolean notsame)
+static bool
+is_sysrooted_pathname (const char *name)
{
- char * realname = ld_canon_sysroot ? lrealpath (name) : NULL;
+ char *realname;
int len;
- bfd_boolean result;
+ bool result;
- if (! realname)
- return FALSE;
+ if (ld_canon_sysroot == NULL)
+ return false;
+ realname = lrealpath (name);
len = strlen (realname);
+ result = false;
+ if (len > ld_canon_sysroot_len
+ && IS_DIR_SEPARATOR (realname[ld_canon_sysroot_len]))
+ {
+ realname[ld_canon_sysroot_len] = '\0';
+ result = FILENAME_CMP (ld_canon_sysroot, realname) == 0;
+ }
- if (((! notsame && len == ld_canon_sysroot_len)
- || (len >= ld_canon_sysroot_len
- && IS_DIR_SEPARATOR (realname[ld_canon_sysroot_len])
- && (realname[ld_canon_sysroot_len] = '\0') == '\0'))
- && FILENAME_CMP (ld_canon_sysroot, realname) == 0)
- result = TRUE;
- else
- result = FALSE;
-
- if (realname)
- free (realname);
-
+ free (realname);
return result;
}
Makes a copy of NAME using xmalloc(). */
void
-ldfile_add_library_path (const char *name, bfd_boolean cmdline)
+ldfile_add_library_path (const char *name, bool cmdline)
{
- search_dirs_type *new;
+ search_dirs_type *new_dirs;
if (!cmdline && config.only_cmd_line_lib_dirs)
return;
- new = xmalloc (sizeof (search_dirs_type));
- new->next = NULL;
- new->cmdline = cmdline;
- *search_tail_ptr = new;
- search_tail_ptr = &new->next;
+ new_dirs = (search_dirs_type *) xmalloc (sizeof (search_dirs_type));
+ new_dirs->next = NULL;
+ new_dirs->cmdline = cmdline;
+ *search_tail_ptr = new_dirs;
+ search_tail_ptr = &new_dirs->next;
/* If a directory is marked as honoring sysroot, prepend the sysroot path
now. */
if (name[0] == '=')
- {
- new->name = concat (ld_sysroot, name + 1, NULL);
- new->sysrooted = TRUE;
- }
+ new_dirs->name = concat (ld_sysroot, name + 1, (const char *) NULL);
+ else if (startswith (name, "$SYSROOT"))
+ new_dirs->name = concat (ld_sysroot, name + strlen ("$SYSROOT"), (const char *) NULL);
else
- {
- new->name = xstrdup (name);
- new->sysrooted = is_sysrooted_pathname (name, FALSE);
- }
+ new_dirs->name = xstrdup (name);
}
/* Try to open a BFD for a lang_input_statement. */
-bfd_boolean
+bool
ldfile_try_open_bfd (const char *attempt,
lang_input_statement_type *entry)
{
entry->the_bfd = bfd_openr (attempt, entry->target);
- if (trace_file_tries)
+ if (verbose)
{
if (entry->the_bfd == NULL)
info_msg (_("attempt to open %s failed\n"), attempt);
{
if (bfd_get_error () == bfd_error_invalid_target)
einfo (_("%F%P: invalid BFD target `%s'\n"), entry->target);
- return FALSE;
+ return false;
}
+ track_dependency_files (attempt);
+
+ /* Linker needs to decompress sections. */
+ entry->the_bfd->flags |= BFD_DECOMPRESS;
+
+ /* This is a linker input BFD. */
+ entry->the_bfd->is_linker_input = 1;
+
+#if BFD_SUPPORTS_PLUGINS
+ if (entry->flags.lto_output)
+ entry->the_bfd->lto_output = 1;
+#endif
+
/* If we are searching for this file, see if the architecture is
compatible with the output file. If it isn't, keep searching.
If we can't open the file as an object file, stop the search
here. If we are statically linking, ensure that we don't link
- a dynamic object. */
+ a dynamic object.
+
+ In the code below, it's OK to exit early if the check fails,
+ closing the checked BFD and returning false, but if the BFD
+ checks out compatible, do not exit early returning true, or
+ the plugins will not get a chance to claim the file. */
- if (entry->search_dirs_flag || !entry->dynamic)
+ if (entry->flags.search_dirs || !entry->flags.dynamic)
{
bfd *check;
if (check != NULL)
{
- if (! bfd_check_format (check, bfd_object))
+ if (!bfd_check_format (check, bfd_object))
{
if (check == entry->the_bfd
- && entry->search_dirs_flag
+ && entry->flags.search_dirs
&& bfd_get_error () == bfd_error_file_not_recognized
- && ! ldemul_unrecognized_file (entry))
+ && !ldemul_unrecognized_file (entry))
{
int token, skip = 0;
char *arg, *arg1, *arg2, *arg3;
/* Try to interpret the file as a linker script. */
ldfile_open_command_file (attempt);
- ldfile_assumed_script = TRUE;
+ ldfile_assumed_script = true;
parser_input = input_selected;
- ldlex_both ();
+ ldlex_script ();
token = INPUT_SCRIPT;
while (token != 0)
{
skip = 1;
}
free (arg1);
- if (arg2) free (arg2);
- if (arg3) free (arg3);
+ free (arg2);
+ free (arg3);
break;
case NAME:
case LNAME:
free (yylval.name);
break;
case INT:
- if (yylval.bigint.str)
- free (yylval.bigint.str);
+ free (yylval.bigint.str);
break;
}
token = yylex ();
}
ldlex_popstate ();
- ldfile_assumed_script = FALSE;
+ ldfile_assumed_script = false;
fclose (yyin);
yyin = NULL;
if (skip)
{
- einfo (_("%P: skipping incompatible %s when searching for %s\n"),
- attempt, entry->local_sym_name);
+ if (command_line.warn_search_mismatch)
+ einfo (_("%P: skipping incompatible %s "
+ "when searching for %s\n"),
+ attempt, entry->local_sym_name);
bfd_close (entry->the_bfd);
entry->the_bfd = NULL;
- return FALSE;
+ return false;
}
}
- return TRUE;
+ goto success;
}
- if (!entry->dynamic && (entry->the_bfd->flags & DYNAMIC) != 0)
+ if (!entry->flags.dynamic && (entry->the_bfd->flags & DYNAMIC) != 0)
{
einfo (_("%F%P: attempted static link of dynamic object `%s'\n"),
attempt);
bfd_close (entry->the_bfd);
entry->the_bfd = NULL;
- return FALSE;
+ return false;
}
- if (entry->search_dirs_flag
- && !bfd_arch_get_compatible (check, output_bfd,
+ if (entry->flags.search_dirs
+ && !bfd_arch_get_compatible (check, link_info.output_bfd,
command_line.accept_unknown_input_arch)
/* XCOFF archives can have 32 and 64 bit objects. */
- && ! (bfd_get_flavour (check) == bfd_target_xcoff_flavour
- && bfd_get_flavour (output_bfd) == bfd_target_xcoff_flavour
- && bfd_check_format (entry->the_bfd, bfd_archive)))
+ && !(bfd_get_flavour (check) == bfd_target_xcoff_flavour
+ && (bfd_get_flavour (link_info.output_bfd)
+ == bfd_target_xcoff_flavour)
+ && bfd_check_format (entry->the_bfd, bfd_archive)))
{
- einfo (_("%P: skipping incompatible %s when searching for %s\n"),
- attempt, entry->local_sym_name);
+ if (command_line.warn_search_mismatch)
+ einfo (_("%P: skipping incompatible %s "
+ "when searching for %s\n"),
+ attempt, entry->local_sym_name);
bfd_close (entry->the_bfd);
entry->the_bfd = NULL;
- return FALSE;
+ return false;
}
}
}
-
- return TRUE;
+ success:
+#if BFD_SUPPORTS_PLUGINS
+ /* If plugins are active, they get first chance to claim
+ any successfully-opened input file. We skip archives
+ here; the plugin wants us to offer it the individual
+ members when we enumerate them, not the whole file. We
+ also ignore corefiles, because that's just weird. It is
+ a needed side-effect of calling bfd_check_format with
+ bfd_object that it sets the bfd's arch and mach, which
+ will be needed when and if we want to bfd_create a new
+ one using this one as a template. */
+ if (link_info.lto_plugin_active
+ && !no_more_claiming
+ && bfd_check_format (entry->the_bfd, bfd_object))
+ plugin_maybe_claim (entry);
+#endif /* BFD_SUPPORTS_PLUGINS */
+
+ /* It opened OK, the format checked out, and the plugins have had
+ their chance to claim it, so this is success. */
+ return true;
}
/* Search for and open the file specified by ENTRY. If it is an
archive, use ARCH, LIB and SUFFIX to modify the file name. */
-bfd_boolean
+bool
ldfile_open_file_search (const char *arch,
lang_input_statement_type *entry,
const char *lib,
/* If this is not an archive, try to open it in the current
directory first. */
- if (! entry->is_archive)
+ if (!entry->flags.maybe_archive)
{
- if (entry->sysrooted && IS_ABSOLUTE_PATH (entry->filename))
+ if (entry->flags.sysrooted && IS_ABSOLUTE_PATH (entry->filename))
{
char *name = concat (ld_sysroot, entry->filename,
(const char *) NULL);
if (ldfile_try_open_bfd (name, entry))
{
entry->filename = name;
- return TRUE;
+ return true;
}
free (name);
}
else if (ldfile_try_open_bfd (entry->filename, entry))
- {
- entry->sysrooted = IS_ABSOLUTE_PATH (entry->filename)
- && is_sysrooted_pathname (entry->filename, TRUE);
- return TRUE;
- }
+ return true;
if (IS_ABSOLUTE_PATH (entry->filename))
- return FALSE;
+ return false;
}
for (search = search_head; search != NULL; search = search->next)
{
char *string;
- if (entry->dynamic && ! link_info.relocatable)
+ if (entry->flags.dynamic && !bfd_link_relocatable (&link_info))
{
if (ldemul_open_dynamic_archive (arch, search, entry))
- {
- entry->sysrooted = search->sysrooted;
- return TRUE;
- }
+ return true;
}
- string = xmalloc (strlen (search->name)
- + strlen (slash)
- + strlen (lib)
- + strlen (entry->filename)
- + strlen (arch)
- + strlen (suffix)
- + 1);
-
- if (entry->is_archive)
- sprintf (string, "%s%s%s%s%s%s", search->name, slash,
- lib, entry->filename, arch, suffix);
+ if (entry->flags.maybe_archive && !entry->flags.full_name_provided)
+ string = concat (search->name, slash, lib, entry->filename,
+ arch, suffix, (const char *) NULL);
else
- sprintf (string, "%s%s%s", search->name, slash, entry->filename);
+ string = concat (search->name, slash, entry->filename,
+ (const char *) 0);
if (ldfile_try_open_bfd (string, entry))
{
entry->filename = string;
- entry->sysrooted = search->sysrooted;
- return TRUE;
+ return true;
}
free (string);
}
- return FALSE;
+ return false;
}
-/* Open the input file specified by ENTRY. */
+/* Open the input file specified by ENTRY.
+ PR 4437: Do not stop on the first missing file, but
+ continue processing other input files in case there
+ are more errors to report. */
void
ldfile_open_file (lang_input_statement_type *entry)
if (entry->the_bfd != NULL)
return;
- if (! entry->search_dirs_flag)
+ if (!entry->flags.search_dirs)
{
if (ldfile_try_open_bfd (entry->filename, entry))
return;
- if (strcmp (entry->filename, entry->local_sym_name) != 0)
- einfo (_("%F%P: %s (%s): No such file: %E\n"),
+
+ if (filename_cmp (entry->filename, entry->local_sym_name) != 0)
+ einfo (_("%P: cannot find %s (%s): %E\n"),
entry->filename, entry->local_sym_name);
else
- einfo (_("%F%P: %s: No such file: %E\n"), entry->local_sym_name);
+ einfo (_("%P: cannot find %s: %E\n"), entry->local_sym_name);
+
+ entry->flags.missing_file = true;
+ input_flags.missing_file = true;
}
else
{
search_arch_type *arch;
- bfd_boolean found = FALSE;
+ bool found = false;
- /* Try to open <filename><suffix> or lib<filename><suffix>.a */
+ /* If extra_search_path is set, entry->filename is a relative path.
+ Search the directory of the current linker script before searching
+ other paths. */
+ if (entry->extra_search_path)
+ {
+ char *path = concat (entry->extra_search_path, slash, entry->filename,
+ (const char *)0);
+ if (ldfile_try_open_bfd (path, entry))
+ {
+ entry->filename = path;
+ entry->flags.search_dirs = false;
+ return;
+ }
+
+ free (path);
+ }
+
+ /* Try to open <filename><suffix> or lib<filename><suffix>.a. */
for (arch = search_arch_head; arch != NULL; arch = arch->next)
{
found = ldfile_open_file_search (arch->name, entry, "lib", ".a");
/* If we have found the file, we don't need to search directories
again. */
if (found)
- entry->search_dirs_flag = FALSE;
- else if (entry->sysrooted
+ entry->flags.search_dirs = false;
+ else
+ {
+ if (entry->flags.sysrooted
&& ld_sysroot
&& IS_ABSOLUTE_PATH (entry->local_sym_name))
- einfo (_("%F%P: cannot find %s inside %s\n"),
- entry->local_sym_name, ld_sysroot);
- else
- einfo (_("%F%P: cannot find %s\n"), entry->local_sym_name);
+ einfo (_("%P: cannot find %s inside %s\n"),
+ entry->local_sym_name, ld_sysroot);
+#if SUPPORT_ERROR_HANDLING_SCRIPT
+ else if (error_handling_script != NULL)
+ {
+ char * argv[4];
+ const char * res;
+ int status, err;
+
+ argv[0] = error_handling_script;
+ argv[1] = "missing-lib";
+ argv[2] = (char *) entry->local_sym_name;
+ argv[3] = NULL;
+
+ if (verbose)
+ einfo (_("%P: About to run error handling script '%s' with arguments: '%s' '%s'\n"),
+ argv[0], argv[1], argv[2]);
+
+ res = pex_one (PEX_SEARCH, error_handling_script, argv,
+ N_("error handling script"),
+ NULL /* Send stdout to random, temp file. */,
+ NULL /* Write to stderr. */,
+ &status, &err);
+ if (res != NULL)
+ {
+ einfo (_("%P: Failed to run error handling script '%s', reason: "),
+ error_handling_script);
+ /* FIXME: We assume here that errrno == err. */
+ perror (res);
+ }
+ else /* We ignore the return status of the script
+ and always print the error message. */
+ einfo (_("%P: cannot find %s: %E\n"), entry->local_sym_name);
+ }
+#endif
+ else
+ einfo (_("%P: cannot find %s: %E\n"), entry->local_sym_name);
+
+ /* PR 25747: Be kind to users who forgot to add the
+ "lib" prefix to their library when it was created. */
+ for (arch = search_arch_head; arch != NULL; arch = arch->next)
+ {
+ if (ldfile_open_file_search (arch->name, entry, "", ".a"))
+ {
+ const char * base = lbasename (entry->filename);
+
+ einfo (_("%P: note to link with %s use -l:%s or rename it to lib%s\n"),
+ entry->filename, base, base);
+ bfd_close (entry->the_bfd);
+ entry->the_bfd = NULL;
+ break;
+ }
+ }
+
+ entry->flags.missing_file = true;
+ input_flags.missing_file = true;
+ }
}
}
-/* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */
+/* Try to open NAME. */
static FILE *
-try_open (const char *name, const char *exten)
+try_open (const char *name, bool *sysrooted)
{
FILE *result;
- char buff[1000];
result = fopen (name, "r");
- if (trace_file_tries)
+ if (result != NULL)
+ *sysrooted = is_sysrooted_pathname (name);
+
+ if (verbose)
{
if (result == NULL)
info_msg (_("cannot find script file %s\n"), name);
info_msg (_("opened script file %s\n"), name);
}
- if (result != NULL)
- return result;
+ return result;
+}
+
+/* Return TRUE iff directory DIR contains an "ldscripts" subdirectory. */
+
+static bool
+check_for_scripts_dir (char *dir)
+{
+ char *buf;
+ struct stat s;
+ bool res;
+
+ buf = concat (dir, "/ldscripts", (const char *) NULL);
+ res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode);
+ free (buf);
+ return res;
+}
+
+/* Return the default directory for finding script files.
+ We look for the "ldscripts" directory in:
+
+ SCRIPTDIR (passed from Makefile)
+ (adjusted according to the current location of the binary)
+ the dir where this program is (for using it from the build tree). */
+
+static char *
+find_scripts_dir (void)
+{
+ char *dir;
- if (*exten)
+ dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR);
+ if (dir)
{
- sprintf (buff, "%s%s", name, exten);
- result = fopen (buff, "r");
+ if (check_for_scripts_dir (dir))
+ return dir;
+ free (dir);
+ }
- if (trace_file_tries)
- {
- if (result == NULL)
- info_msg (_("cannot find script file %s\n"), buff);
- else
- info_msg (_("opened script file %s\n"), buff);
- }
+ dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR);
+ if (dir)
+ {
+ if (check_for_scripts_dir (dir))
+ return dir;
+ free (dir);
}
- return result;
+ /* Look for "ldscripts" in the dir where our binary is. */
+ dir = make_relative_prefix (program_name, ".", ".");
+ if (dir)
+ {
+ if (check_for_scripts_dir (dir))
+ return dir;
+ free (dir);
+ }
+
+ return NULL;
}
-/* Try to open NAME; if that fails, look for it in any directories
- specified with -L, without and with EXTEND appended. */
+/* If DEFAULT_ONLY is false, try to open NAME; if that fails, look for
+ it in directories specified with -L, then in the default script
+ directory. If DEFAULT_ONLY is true, the search is restricted to
+ the default script location. */
static FILE *
-ldfile_find_command_file (const char *name, const char *extend)
+ldfile_find_command_file (const char *name,
+ bool default_only,
+ bool *sysrooted)
{
search_dirs_type *search;
- FILE *result;
- char buffer[1000];
+ FILE *result = NULL;
+ char *path;
+ static search_dirs_type *script_search;
- /* First try raw name. */
- result = try_open (name, "");
- if (result == NULL)
+ if (!default_only)
{
- /* Try now prefixes. */
- for (search = search_head; search != NULL; search = search->next)
- {
- sprintf (buffer, "%s%s%s", search->name, slash, name);
+ /* First try raw name. */
+ result = try_open (name, sysrooted);
+ if (result != NULL)
+ return result;
+ }
- result = try_open (buffer, extend);
- if (result)
- break;
+ if (!script_search)
+ {
+ char *script_dir = find_scripts_dir ();
+ if (script_dir)
+ {
+ search_dirs_type **save_tail_ptr = search_tail_ptr;
+ search_tail_ptr = &script_search;
+ ldfile_add_library_path (script_dir, true);
+ search_tail_ptr = save_tail_ptr;
}
}
+ /* Temporarily append script_search to the path list so that the
+ paths specified with -L will be searched first. */
+ *search_tail_ptr = script_search;
+
+ /* Try now prefixes. */
+ for (search = default_only ? script_search : search_head;
+ search != NULL;
+ search = search->next)
+ {
+ path = concat (search->name, slash, name, (const char *) NULL);
+ result = try_open (path, sysrooted);
+ free (path);
+ if (result)
+ break;
+ }
+
+ /* Restore the original path list. */
+ *search_tail_ptr = NULL;
+
return result;
}
-void
-ldfile_open_command_file (const char *name)
+enum script_open_style {
+ script_nonT,
+ script_T,
+ script_defaultT
+};
+
+struct script_name_list
+{
+ struct script_name_list *next;
+ enum script_open_style open_how;
+ char name[1];
+};
+
+/* Open command file NAME. */
+
+static void
+ldfile_open_command_file_1 (const char *name, enum script_open_style open_how)
{
FILE *ldlex_input_stack;
- ldlex_input_stack = ldfile_find_command_file (name, "");
+ bool sysrooted;
+ static struct script_name_list *processed_scripts = NULL;
+ struct script_name_list *script;
+ size_t len;
+
+ /* PR 24576: Catch the case where the user has accidentally included
+ the same linker script twice. */
+ for (script = processed_scripts; script != NULL; script = script->next)
+ {
+ if ((open_how != script_nonT || script->open_how != script_nonT)
+ && strcmp (name, script->name) == 0)
+ {
+ einfo (_("%F%P: error: linker script file '%s'"
+ " appears multiple times\n"), name);
+ return;
+ }
+ }
+ /* FIXME: This memory is never freed, but that should not really matter.
+ It will be released when the linker exits, and it is unlikely to ever
+ be more than a few tens of bytes. */
+ len = strlen (name);
+ script = xmalloc (sizeof (*script) + len);
+ script->next = processed_scripts;
+ script->open_how = open_how;
+ memcpy (script->name, name, len + 1);
+ processed_scripts = script;
+
+ ldlex_input_stack = ldfile_find_command_file (name,
+ open_how == script_defaultT,
+ &sysrooted);
if (ldlex_input_stack == NULL)
{
bfd_set_error (bfd_error_system_call);
- einfo (_("%P%F: cannot open linker script file %s: %E\n"), name);
+ einfo (_("%F%P: cannot open linker script file %s: %E\n"), name);
+ return;
}
- lex_push_file (ldlex_input_stack, name);
+ track_dependency_files (name);
+
+ lex_push_file (ldlex_input_stack, name, sysrooted);
- ldfile_input_filename = name;
lineno = 1;
saved_script_handle = ldlex_input_stack;
}
+/* Open command file NAME in the current directory, -L directories,
+ the default script location, in that order. */
+
+void
+ldfile_open_command_file (const char *name)
+{
+ ldfile_open_command_file_1 (name, script_nonT);
+}
+
+void
+ldfile_open_script_file (const char *name)
+{
+ ldfile_open_command_file_1 (name, script_T);
+}
+
+/* Open command file NAME at the default script location. */
+
+void
+ldfile_open_default_command_file (const char *name)
+{
+ ldfile_open_command_file_1 (name, script_defaultT);
+}
+
void
ldfile_add_arch (const char *in_name)
{
char *name = xstrdup (in_name);
- search_arch_type *new = xmalloc (sizeof (search_arch_type));
+ search_arch_type *new_arch
+ = (search_arch_type *) xmalloc (sizeof (search_arch_type));
ldfile_output_machine_name = in_name;
- new->name = name;
- new->next = NULL;
+ new_arch->name = name;
+ new_arch->next = NULL;
while (*name)
{
*name = TOLOWER (*name);
name++;
}
- *search_arch_tail_ptr = new;
- search_arch_tail_ptr = &new->next;
+ *search_arch_tail_ptr = new_arch;
+ search_arch_tail_ptr = &new_arch->next;
}
else if (defarch != bfd_arch_unknown)
ldfile_output_architecture = defarch;
else
- einfo (_("%P%F: cannot represent machine `%s'\n"), string);
+ einfo (_("%F%P: cannot represent machine `%s'\n"), string);
}
projects / thirdparty / binutils-gdb.git / blobdiff