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-rw-r--r--ld/ChangeLog23
-rw-r--r--ld/emultempl/elf32.em78
-rw-r--r--ld/ld.texinfo12
-rw-r--r--ld/ldlang.c1
-rw-r--r--ld/ldlang.h4
-rw-r--r--ld/ldmain.c4
-rw-r--r--ld/ldmain.h1
-rw-r--r--ld/lexsup.c14
8 files changed, 121 insertions, 16 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog
index a1b679c..e029451 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,26 @@
+2004-07-19 H.J. Lu <hongjiu.lu@intel.com>
+
+ * emultempl/elf32.em (gld${EMULATION_NAME}_load_symbols): Also
+ check the add_needed field.
+ (dt_needed): New struct.
+ (gld${EMULATION_NAME}_try_needed): Change the first argument
+ to a pointer to struct dt_needed. Check the DYN_NO_ADD_NEEDED
+ bit in the file where the DT_NEEDED entry comes from.
+ (gld${EMULATION_NAME}_search_needed): Change the second
+ argument to a pointer to struct dt_needed.
+ (gld${EMULATION_NAME}_check_ld_so_conf): Updated.
+ (gld${EMULATION_NAME}_after_open): Likewise.
+
+ * ld.texinfo: Add --add-needed document.
+ * ldlang.c (new_afile): Set p->add_needed.
+ * ldlang.h (lang_input_statement_type): Add add_needed field.
+ * ldmain.h (add_needed): Declare.
+ * ldmain.c (add_needed): New global var.
+ * lexsup.c (option_values): Add OPTION_ADD_NEEDED and
+ OPTION_NO_ADD_NEEDED.
+ (ld_options): Likewise.
+ (parse_args): Handle them.
+
2004-07-13 Christof Petig <christof@petig-baender.de>
* emultempl/pe.em (make_import_fixup): Use bfd_get_32 to correct
diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
index 8dbd60a..469f054 100644
--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
@@ -96,14 +96,25 @@ cat >>e${EMULATION_NAME}.c <<EOF
static bfd_boolean
gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
{
- if (!entry->as_needed
- || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
- return FALSE;
+ int class = 0;
/* Tell the ELF linker that we don't want the output file to have a
DT_NEEDED entry for this file, unless it is used to resolve
references in a regular object. */
- bfd_elf_set_dyn_lib_class (entry->the_bfd, DYN_AS_NEEDED);
+ if (entry->as_needed)
+ class = DYN_AS_NEEDED;
+
+ /* Tell the ELF linker that we don't want the output file to have a
+ DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
+ this file at all. */
+ if (!entry->add_needed)
+ class |= DYN_NO_ADD_NEEDED;
+
+ if (!class
+ || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
+ return FALSE;
+
+ bfd_elf_set_dyn_lib_class (entry->the_bfd, class);
/* Continue on with normal load_symbols processing. */
return FALSE;
@@ -242,16 +253,24 @@ gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
global_needed->name, global_needed->by, soname);
}
+struct dt_needed
+{
+ bfd *by;
+ const char *name;
+};
/* This function is called for each possible name for a dynamic object
named by a DT_NEEDED entry. The FORCE parameter indicates whether
to skip the check for a conflicting version. */
static bfd_boolean
-gld${EMULATION_NAME}_try_needed (const char *name, int force)
+gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
+ int force)
{
bfd *abfd;
+ const char *name = needed->name;
const char *soname;
+ int class;
abfd = bfd_openr (name, bfd_get_target (output_bfd));
if (abfd == NULL)
@@ -364,7 +383,17 @@ cat >>e${EMULATION_NAME}.c <<EOF
/* Tell the ELF linker that we don't want the output file to have a
DT_NEEDED entry for this file, unless it is used to resolve
references in a regular object. */
- bfd_elf_set_dyn_lib_class (abfd, DYN_DT_NEEDED);
+ class = DYN_DT_NEEDED;
+
+ /* Tell the ELF linker that we don't want the output file to have a
+ DT_NEEDED entry for this file at all if the entry is from a file
+ with DYN_NO_ADD_NEEDED. */
+ if (needed->by
+ && (bfd_elf_get_dyn_lib_class (needed->by)
+ & DYN_NO_ADD_NEEDED) != 0)
+ class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
+
+ bfd_elf_set_dyn_lib_class (abfd, class);
/* Add this file into the symbol table. */
if (! bfd_link_add_symbols (abfd, &link_info))
@@ -377,16 +406,23 @@ cat >>e${EMULATION_NAME}.c <<EOF
/* Search for a needed file in a path. */
static bfd_boolean
-gld${EMULATION_NAME}_search_needed (const char *path, const char *name, int force)
+gld${EMULATION_NAME}_search_needed (const char *path,
+ struct dt_needed *n, int force)
{
const char *s;
+ const char *name = n->name;
size_t len;
+ struct dt_needed needed;
if (name[0] == '/')
- return gld${EMULATION_NAME}_try_needed (name, force);
+ return gld${EMULATION_NAME}_try_needed (n, force);
if (path == NULL || *path == '\0')
return FALSE;
+
+ needed.by = n->by;
+ needed.name = n->name;
+
len = strlen (name);
while (1)
{
@@ -407,7 +443,8 @@ gld${EMULATION_NAME}_search_needed (const char *path, const char *name, int forc
}
strcpy (sset, name);
- if (gld${EMULATION_NAME}_try_needed (filename, force))
+ needed.name = filename;
+ if (gld${EMULATION_NAME}_try_needed (&needed, force))
return TRUE;
free (filename);
@@ -474,6 +511,7 @@ gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
{
static bfd_boolean initialized;
static char *ld_so_conf;
+ struct dt_needed needed;
if (! initialized)
{
@@ -548,7 +586,10 @@ gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
if (ld_so_conf == NULL)
return FALSE;
- return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
+
+ needed.by = NULL;
+ needed.name = name;
+ return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
}
EOF
@@ -631,6 +672,7 @@ gld${EMULATION_NAME}_after_open (void)
for (l = needed; l != NULL; l = l->next)
{
struct bfd_link_needed_list *ll;
+ struct dt_needed n, nn;
int force;
/* If we've already seen this file, skip it. */
@@ -647,6 +689,9 @@ gld${EMULATION_NAME}_after_open (void)
if (global_found)
continue;
+ n.by = l->by;
+ n.name = l->name;
+ nn.by = l->by;
if (trace_file_tries)
info_msg (_("%s needed by %B\n"), l->name, l->by);
@@ -676,13 +721,13 @@ fi
cat >>e${EMULATION_NAME}.c <<EOF
if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
- l->name, force))
+ &n, force))
break;
EOF
if [ "x${USE_LIBPATH}" = xyes ] ; then
cat >>e${EMULATION_NAME}.c <<EOF
if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
- l->name, force))
+ &n, force))
break;
EOF
fi
@@ -692,12 +737,12 @@ cat >>e${EMULATION_NAME}.c <<EOF
&& command_line.rpath == NULL)
{
lib_path = (const char *) getenv ("LD_RUN_PATH");
- if (gld${EMULATION_NAME}_search_needed (lib_path, l->name,
+ if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
force))
break;
}
lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
- if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force))
+ if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
break;
EOF
fi
@@ -710,7 +755,7 @@ cat >>e${EMULATION_NAME}.c <<EOF
char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
found = (rp->by == l->by
&& gld${EMULATION_NAME}_search_needed (tmpname,
- l->name,
+ &n,
force));
free (tmpname);
}
@@ -729,7 +774,8 @@ cat >>e${EMULATION_NAME}.c <<EOF
continue;
filename = (char *) xmalloc (strlen (search->name) + len + 2);
sprintf (filename, "%s/%s", search->name, l->name);
- if (gld${EMULATION_NAME}_try_needed (filename, force))
+ nn.name = filename;
+ if (gld${EMULATION_NAME}_try_needed (&nn, force))
break;
free (filename);
}
diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index 2b77260..8af0223 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -984,6 +984,18 @@ needed. @option{--as-needed} causes DT_NEEDED tags to only be emitted
for libraries that satisfy some reference from regular objects.
@option{--no-as-needed} restores the default behaviour.
+@kindex --add-needed
+@kindex --no-add-needed
+@item --add-needed
+@itemx --no-add-needed
+This option affects the treatment of dynamic libraries from ELF
+DT_NEEDED tags in dynamic libraries mentioned on the command line after
+the @option{--no-add-needed} option. Normally, the linker will add
+a DT_NEEDED tag for each dynamic library from DT_NEEDED tags.
+@option{--no-add-needed} causes DT_NEEDED tags will never be emitted
+for those libraries from DT_NEEDED tags. @option{--add-needed} restores
+the default behaviour.
+
@kindex -assert @var{keyword}
@item -assert @var{keyword}
This option is ignored for SunOS compatibility.
diff --git a/ld/ldlang.c b/ld/ldlang.c
index 8daf9c5..c5cfd5c 100644
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -454,6 +454,7 @@ new_afile (const char *name,
p->next = NULL;
p->symbol_count = 0;
p->dynamic = config.dynamic_link;
+ p->add_needed = add_needed;
p->as_needed = as_needed;
p->whole_archive = whole_archive;
p->loaded = FALSE;
diff --git a/ld/ldlang.h b/ld/ldlang.h
index 0b56c27..f7e2fa6 100644
--- a/ld/ldlang.h
+++ b/ld/ldlang.h
@@ -266,6 +266,10 @@ typedef struct lang_input_statement_struct
/* Whether to search for this entry as a dynamic archive. */
bfd_boolean dynamic;
+ /* Whether DT_NEEDED tags should be added for dynamic libraries in
+ DT_NEEDED tags from this entry. */
+ bfd_boolean add_needed;
+
/* Whether this entry should cause a DT_NEEDED tag only when
satisfying references from regular files, or always. */
bfd_boolean as_needed;
diff --git a/ld/ldmain.c b/ld/ldmain.c
index f1804c4..193fd69 100644
--- a/ld/ldmain.c
+++ b/ld/ldmain.c
@@ -97,6 +97,10 @@ bfd_boolean whole_archive;
actually satisfies some reference in a regular object. */
bfd_boolean as_needed;
+/* Nonzero means never create DT_NEEDED entries for dynamic libraries
+ in DT_NEEDED tags. */
+bfd_boolean add_needed = TRUE;
+
/* TRUE if we should demangle symbol names. */
bfd_boolean demangling;
diff --git a/ld/ldmain.h b/ld/ldmain.h
index 8cab5fe..976810e 100644
--- a/ld/ldmain.h
+++ b/ld/ldmain.h
@@ -33,6 +33,7 @@ extern bfd_boolean trace_file_tries;
extern bfd_boolean version_printed;
extern bfd_boolean whole_archive;
extern bfd_boolean as_needed;
+extern bfd_boolean add_needed;
extern bfd_boolean demangling;
extern int g_switch_value;
extern const char *output_filename;
diff --git a/ld/lexsup.c b/ld/lexsup.c
index 55ab5ee..9a599a3 100644
--- a/ld/lexsup.c
+++ b/ld/lexsup.c
@@ -112,6 +112,8 @@ enum option_values
OPTION_SPLIT_BY_RELOC,
OPTION_SPLIT_BY_FILE ,
OPTION_WHOLE_ARCHIVE,
+ OPTION_ADD_NEEDED,
+ OPTION_NO_ADD_NEEDED,
OPTION_AS_NEEDED,
OPTION_NO_AS_NEEDED,
OPTION_WRAP,
@@ -482,6 +484,12 @@ static const struct ld_option ld_options[] =
{ {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
'\0', NULL, N_("Include all objects from following archives"),
TWO_DASHES },
+ { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},
+ '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"
+ "\t\t\t\tfollowing dynamic libs"), TWO_DASHES },
+ { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
+ '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
+ "\t\t\t\tin following dynamic libs"), TWO_DASHES },
{ {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
'\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
TWO_DASHES },
@@ -1196,6 +1204,12 @@ parse_args (unsigned argc, char **argv)
case OPTION_WHOLE_ARCHIVE:
whole_archive = TRUE;
break;
+ case OPTION_ADD_NEEDED:
+ add_needed = TRUE;
+ break;
+ case OPTION_NO_ADD_NEEDED:
+ add_needed = FALSE;
+ break;
case OPTION_AS_NEEDED:
as_needed = TRUE;
break;
generated by cgit v1.1 at 2024-12-04 12:43:33 +0000