/* Linker file opening and searching.
- Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+ Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004, 2005, 2007, 2008 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
-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.
+ 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 3 of the License, or
+ (at your option) any later version.
-GLD 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.
+ 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, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ 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 "safe-ctype.h"
#include "ld.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
#include "ldmain.h"
-#include "ldgram.h"
+#include <ldgram.h>
#include "ldlex.h"
#include "ldemul.h"
+#include "libiberty.h"
+#include "filenames.h"
-#include <ctype.h>
-
-const char *ldfile_input_filename;
-boolean ldfile_assumed_script = false;
-const char *ldfile_output_machine_name = "";
+const char * ldfile_input_filename;
+bfd_boolean 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;
-#ifndef MPW
#ifdef VMS
-char *slash = "";
+static char * slash = "";
#else
#if defined (_WIN32) && ! defined (__CYGWIN32__)
-char *slash = "\\";
+static char * slash = "\\";
#else
-char *slash = "/";
+static char * slash = "/";
#endif
#endif
-#else /* MPW */
-/* The MPW path char is a colon. */
-char *slash = ":";
-#endif /* MPW */
-
-/* LOCAL */
-
-static search_dirs_type **search_tail_ptr = &search_head;
-typedef struct search_arch {
+typedef struct search_arch
+{
char *name;
struct search_arch *next;
} search_arch_type;
+static search_dirs_type **search_tail_ptr = &search_head;
static search_arch_type *search_arch_head;
static search_arch_type **search_arch_tail_ptr = &search_arch_head;
-static FILE *try_open PARAMS ((const char *name, const char *exten));
+/* 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)
+{
+ char * realname = ld_canon_sysroot ? lrealpath (name) : NULL;
+ int len;
+ bfd_boolean result;
+
+ if (! realname)
+ return FALSE;
+
+ len = strlen (realname);
+
+ 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);
+
+ return result;
+}
+
+/* Adds NAME to the library search path.
+ Makes a copy of NAME using xmalloc(). */
void
-ldfile_add_library_path (name, cmdline)
- const char *name;
- boolean cmdline;
+ldfile_add_library_path (const char *name, bfd_boolean cmdline)
{
search_dirs_type *new;
- new = (search_dirs_type *) xmalloc (sizeof (search_dirs_type));
+ if (!cmdline && config.only_cmd_line_lib_dirs)
+ return;
+
+ new = xmalloc (sizeof (search_dirs_type));
new->next = NULL;
- new->name = name;
new->cmdline = cmdline;
*search_tail_ptr = new;
search_tail_ptr = &new->next;
+
+ /* If a directory is marked as honoring sysroot, prepend the sysroot path
+ now. */
+ if (name[0] == '=')
+ {
+ new->name = concat (ld_sysroot, name + 1, (const char *) NULL);
+ new->sysrooted = TRUE;
+ }
+ else
+ {
+ new->name = xstrdup (name);
+ new->sysrooted = is_sysrooted_pathname (name, FALSE);
+ }
}
/* Try to open a BFD for a lang_input_statement. */
-boolean
-ldfile_try_open_bfd (attempt, entry)
- const char *attempt;
- lang_input_statement_type *entry;
+bfd_boolean
+ldfile_try_open_bfd (const char *attempt,
+ lang_input_statement_type *entry)
{
entry->the_bfd = bfd_openr (attempt, entry->target);
{
if (bfd_get_error () == bfd_error_invalid_target)
einfo (_("%F%P: invalid BFD target `%s'\n"), entry->target);
- return false;
+ return FALSE;
}
/* 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. */
+ here. If we are statically linking, ensure that we don't link
+ a dynamic object. */
- if (entry->search_dirs_flag)
+ if (entry->search_dirs_flag || !entry->dynamic)
{
bfd *check;
if (check != NULL)
{
if (! bfd_check_format (check, bfd_object))
- return true;
- if (bfd_arch_get_compatible (check, output_bfd) == NULL)
{
- einfo (_("%P: skipping incompatible %s when searching for %s\n"),
- attempt, entry->local_sym_name);
+ if (check == entry->the_bfd
+ && entry->search_dirs_flag
+ && bfd_get_error () == bfd_error_file_not_recognized
+ && ! ldemul_unrecognized_file (entry))
+ {
+ int token, skip = 0;
+ char *arg, *arg1, *arg2, *arg3;
+ extern FILE *yyin;
+
+ /* Try to interpret the file as a linker script. */
+ ldfile_open_command_file (attempt);
+
+ ldfile_assumed_script = TRUE;
+ parser_input = input_selected;
+ ldlex_both ();
+ token = INPUT_SCRIPT;
+ while (token != 0)
+ {
+ switch (token)
+ {
+ case OUTPUT_FORMAT:
+ if ((token = yylex ()) != '(')
+ continue;
+ if ((token = yylex ()) != NAME)
+ continue;
+ arg1 = yylval.name;
+ arg2 = NULL;
+ arg3 = NULL;
+ token = yylex ();
+ if (token == ',')
+ {
+ if ((token = yylex ()) != NAME)
+ {
+ free (arg1);
+ continue;
+ }
+ arg2 = yylval.name;
+ if ((token = yylex ()) != ','
+ || (token = yylex ()) != NAME)
+ {
+ free (arg1);
+ free (arg2);
+ continue;
+ }
+ arg3 = yylval.name;
+ token = yylex ();
+ }
+ if (token == ')')
+ {
+ switch (command_line.endian)
+ {
+ default:
+ case ENDIAN_UNSET:
+ arg = arg1; break;
+ case ENDIAN_BIG:
+ arg = arg2 ? arg2 : arg1; break;
+ case ENDIAN_LITTLE:
+ arg = arg3 ? arg3 : arg1; break;
+ }
+ if (strcmp (arg, lang_get_output_target ()) != 0)
+ skip = 1;
+ }
+ free (arg1);
+ if (arg2) free (arg2);
+ if (arg3) free (arg3);
+ break;
+ case NAME:
+ case LNAME:
+ case VERS_IDENTIFIER:
+ case VERS_TAG:
+ free (yylval.name);
+ break;
+ case INT:
+ if (yylval.bigint.str)
+ free (yylval.bigint.str);
+ break;
+ }
+ token = yylex ();
+ }
+ ldlex_popstate ();
+ ldfile_assumed_script = FALSE;
+ fclose (yyin);
+ yyin = NULL;
+ if (skip)
+ {
+ 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 TRUE;
+ }
+
+ if (!entry->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;
+ }
+
+ if (entry->search_dirs_flag
+ && !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 (link_info.output_bfd) == bfd_target_xcoff_flavour
+ && bfd_check_format (entry->the_bfd, bfd_archive)))
+ {
+ 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;
+ 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. */
-boolean
-ldfile_open_file_search (arch, entry, lib, suffix)
- const char *arch;
- lang_input_statement_type *entry;
- const char *lib;
- const char *suffix;
+bfd_boolean
+ldfile_open_file_search (const char *arch,
+ lang_input_statement_type *entry,
+ const char *lib,
+ const char *suffix)
{
search_dirs_type *search;
directory first. */
if (! entry->is_archive)
{
- if (ldfile_try_open_bfd (entry->filename, entry))
- return true;
+ if (entry->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;
+ }
+ 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;
+ }
+
+ if (IS_ABSOLUTE_PATH (entry->filename))
+ return FALSE;
}
- for (search = search_head;
- search != (search_dirs_type *) NULL;
- search = search->next)
+ for (search = search_head; search != NULL; search = search->next)
{
char *string;
- if (entry->dynamic && ! link_info.relocateable)
+ if (entry->dynamic && ! link_info.relocatable)
{
if (ldemul_open_dynamic_archive (arch, search, entry))
- return true;
+ {
+ entry->sysrooted = search->sysrooted;
+ return TRUE;
+ }
}
- string = (char *) 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);
- else if (entry->filename[0] == '/' || entry->filename[0] == '.'
-#if defined (__MSDOS__) || defined (_WIN32)
- || entry->filename[0] == '\\'
- || (isalpha (entry->filename[0])
- && entry->filename[1] == ':')
-#endif
- )
- strcpy (string, entry->filename);
+ 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;
- return true;
+ entry->sysrooted = search->sysrooted;
+ return TRUE;
}
free (string);
}
- return false;
+ return FALSE;
}
/* Open the input file specified by ENTRY. */
void
-ldfile_open_file (entry)
- lang_input_statement_type *entry;
+ldfile_open_file (lang_input_statement_type *entry)
{
if (entry->the_bfd != NULL)
return;
if (ldfile_try_open_bfd (entry->filename, entry))
return;
if (strcmp (entry->filename, entry->local_sym_name) != 0)
- einfo (_("%F%P: cannot open %s for %s: %E\n"),
+ einfo (_("%F%P: %s (%s): No such file: %E\n"),
entry->filename, entry->local_sym_name);
else
- einfo (_("%F%P: cannot open %s: %E\n"), entry->local_sym_name);
+ einfo (_("%F%P: %s: No such file: %E\n"), entry->local_sym_name);
}
else
{
search_arch_type *arch;
- boolean found = false;
+ bfd_boolean found = FALSE;
/* Try to open <filename><suffix> or lib<filename><suffix>.a */
- for (arch = search_arch_head;
- arch != (search_arch_type *) NULL;
- arch = arch->next)
+ for (arch = search_arch_head; arch != NULL; arch = arch->next)
{
found = ldfile_open_file_search (arch->name, entry, "lib", ".a");
if (found)
/* If we have found the file, we don't need to search directories
again. */
if (found)
- entry->search_dirs_flag = false;
+ entry->search_dirs_flag = FALSE;
+ else if (entry->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);
}
/* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */
static FILE *
-try_open (name, exten)
- const char *name;
- const char *exten;
+try_open (const char *name, const char *exten)
{
FILE *result;
- char buff[1000];
result = fopen (name, "r");
if (*exten)
{
- sprintf (buff, "%s%s", name, exten);
+ char *buff;
+
+ buff = concat (name, exten, (const char *) NULL);
result = fopen (buff, "r");
if (trace_file_tries)
else
info_msg (_("opened script file %s\n"), buff);
}
+ free (buff);
}
return result;
}
-/* Try to open NAME; if that fails, look for it in any directories
- specified with -L, without and with EXTEND apppended. */
+/* Return TRUE iff directory DIR contains an "ldscripts" subdirectory. */
+
+static bfd_boolean
+check_for_scripts_dir (char *dir)
+{
+ char *buf;
+ struct stat s;
+ bfd_boolean res;
+
+ buf = concat (dir, "/ldscripts", (const char *) NULL);
+ res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode);
+ free (buf);
+ return res;
+}
-FILE *
-ldfile_find_command_file (name, extend)
- const char *name;
- const char *extend;
+/* 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)
+ SCRIPTDIR (passed from Makefile)
+ the dir where this program is (for using it from the build tree)
+ the dir where this program is/../lib
+ (for installing the tool suite elsewhere). */
+
+static char *
+find_scripts_dir (void)
+{
+ char *end, *dir;
+ size_t dirlen;
+
+ dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR);
+ if (dir)
+ {
+ if (check_for_scripts_dir (dir))
+ return dir;
+ free (dir);
+ }
+
+ dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR);
+ if (dir)
+ {
+ if (check_for_scripts_dir (dir))
+ return dir;
+ free (dir);
+ }
+
+ if (check_for_scripts_dir (SCRIPTDIR))
+ /* We've been installed normally. */
+ return SCRIPTDIR;
+
+ /* Look for "ldscripts" in the dir where our binary is. */
+ end = strrchr (program_name, '/');
+#ifdef HAVE_DOS_BASED_FILE_SYSTEM
+ {
+ /* We could have \foo\bar, or /foo\bar. */
+ char *bslash = strrchr (program_name, '\\');
+
+ if (end == NULL || (bslash != NULL && bslash > end))
+ end = bslash;
+ }
+#endif
+
+ if (end == NULL)
+ /* Don't look for ldscripts in the current directory. There is
+ too much potential for confusion. */
+ return NULL;
+
+ dirlen = end - program_name;
+ /* Make a copy of program_name in dir.
+ Leave room for later "/../lib". */
+ dir = xmalloc (dirlen + sizeof ("/../lib"));
+ strncpy (dir, program_name, dirlen);
+ dir[dirlen] = '\0';
+
+ if (check_for_scripts_dir (dir))
+ return dir;
+
+ /* Look for "ldscripts" in <the dir where our binary is>/../lib. */
+ strcpy (dir + dirlen, "/../lib");
+ if (check_for_scripts_dir (dir))
+ return dir;
+ free (dir);
+ return NULL;
+}
+
+/* Try to open NAME; if that fails, look for it in the default script
+ directory, then in any directories specified with -L, without and
+ with EXTEND appended. */
+
+static FILE *
+ldfile_find_command_file (const char *name, const char *extend)
{
search_dirs_type *search;
FILE *result;
- char buffer[1000];
+ char *buffer;
+ static search_dirs_type *script_search;
/* First try raw name. */
result = try_open (name, "");
- if (result == (FILE *) NULL)
+ if (result != NULL)
+ return result;
+
+ if (!script_search)
{
- /* Try now prefixes. */
- for (search = search_head;
- search != (search_dirs_type *) NULL;
- search = search->next)
+ char *script_dir = find_scripts_dir ();
+ if (script_dir)
{
- sprintf (buffer, "%s%s%s", search->name, slash, name);
-
- result = try_open (buffer, extend);
- if (result)
- break;
+ 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;
}
+ if (!script_search)
+ script_search = search_head;
+ else
+ script_search->next = search_head;
+ }
+
+ /* Try now prefixes. */
+ for (search = script_search; search != NULL; search = search->next)
+ {
+
+ buffer = concat (search->name, slash, name, (const char *) NULL);
+ result = try_open (buffer, extend);
+ free (buffer);
+ if (result)
+ break;
}
return result;
}
void
-ldfile_open_command_file (name)
- const char *name;
+ldfile_open_command_file (const char *name)
{
FILE *ldlex_input_stack;
ldlex_input_stack = ldfile_find_command_file (name, "");
- if (ldlex_input_stack == (FILE *) NULL)
+ if (ldlex_input_stack == NULL)
{
bfd_set_error (bfd_error_system_call);
einfo (_("%P%F: cannot open linker script file %s: %E\n"), name);
ldfile_input_filename = name;
lineno = 1;
- had_script = true;
-}
-
-#ifdef GNU960
-static char *
-gnu960_map_archname (name)
- char *name;
-{
- struct tabentry { char *cmd_switch; char *arch; };
- static struct tabentry arch_tab[] =
- {
- "", "",
- "KA", "ka",
- "KB", "kb",
- "KC", "mc", /* Synonym for MC */
- "MC", "mc",
- "CA", "ca",
- "SA", "ka", /* Functionally equivalent to KA */
- "SB", "kb", /* Functionally equivalent to KB */
- NULL, ""
- };
- struct tabentry *tp;
-
- for (tp = arch_tab; tp->cmd_switch != NULL; tp++)
- {
- if (! strcmp (name,tp->cmd_switch))
- break;
- }
-
- if (tp->cmd_switch == NULL)
- einfo (_("%P%F: unknown architecture: %s\n"), name);
- return tp->arch;
+ saved_script_handle = ldlex_input_stack;
}
void
-ldfile_add_arch (name)
- char *name;
+ldfile_add_arch (const char *in_name)
{
- search_arch_type *new =
- (search_arch_type *) xmalloc ((bfd_size_type) (sizeof (search_arch_type)));
-
- if (*name != '\0')
- {
- if (ldfile_output_machine_name[0] != '\0')
- {
- einfo (_("%P%F: target architecture respecified\n"));
- return;
- }
-
- ldfile_output_machine_name = name;
- }
-
- new->next = (search_arch_type *) NULL;
- new->name = gnu960_map_archname (name);
- *search_arch_tail_ptr = new;
- search_arch_tail_ptr = &new->next;
-}
-
-#else /* not GNU960 */
-
-void
-ldfile_add_arch (in_name)
- CONST char *in_name;
-{
- char *name = buystring (in_name);
- search_arch_type *new =
- (search_arch_type *) xmalloc (sizeof (search_arch_type));
+ char *name = xstrdup (in_name);
+ search_arch_type *new = xmalloc (sizeof (search_arch_type));
ldfile_output_machine_name = in_name;
new->name = name;
- new->next = (search_arch_type *) NULL;
+ new->next = NULL;
while (*name)
{
- if (isupper ((unsigned char) *name))
- *name = tolower ((unsigned char) *name);
+ *name = TOLOWER (*name);
name++;
}
*search_arch_tail_ptr = new;
search_arch_tail_ptr = &new->next;
}
-#endif
/* Set the output architecture. */
void
-ldfile_set_output_arch (string)
- CONST char *string;
+ldfile_set_output_arch (const char *string, enum bfd_architecture defarch)
{
const bfd_arch_info_type *arch = bfd_scan_arch (string);
ldfile_output_machine = arch->mach;
ldfile_output_machine_name = arch->printable_name;
}
+ else if (defarch != bfd_arch_unknown)
+ ldfile_output_architecture = defarch;
else
- {
- einfo (_("%P%F: cannot represent machine `%s'\n"), string);
- }
+ einfo (_("%P%F: cannot represent machine `%s'\n"), string);
}