Add a new script operator, PROVIDE, to define a symbol only if it
is needed.
* ldgram.y (PROVIDE): New token.
(assignment): Accept PROVIDE.
* ldlex.l (PROVIDE): New token.
* ldexp.h (node_type): Add etree_provide to node_class enum.
(exp_provide): Declare.
* ldexp.c (exp_fold_tree): Handle etree_provide.
(exp_provide): New function.
(exp_print_tree): Handle etree_provide.
* ld.texinfo: Document PROVIDE.
lang_one_common as power of two.
(lang_one_common): Get common symbol alignment from linker hash
table entry. Treat desired alignment as a power of two.
* lexsup.c (S_ISDIR): Define if not already defined.
(parse_args): Add support for -rpath. If -R is used to name a
directory, treat it as -rpath for Solaris compatibility.
* emultempl/elf32.em (gld${EMULATION_NAME}_before_allocation):
Pass command_line.rpath to bfd_elf32_size_dynamic_sections.
* ldmain.c (main): Initialize command_line.rpath to NULL.
* ld.texinfo: Document -rpath option.
synonyms --start-group --end-group.
* ldlang.h (enum statement_enum): Add lang_group_statement_enum.
(lang_group_statement_type): Define new struct.
(lang_statement_union_type): Add group_statement field.
(lang_enter_group, lang_leave_group): Declare.
* ldlang.c (lang_for_each_statement_worker): Handle
lang_group_statement_enum.
(map_input_to_output_sections, print_statement): Likewise.
(lang_size_sections, lang_do_assignments): Likewise.
(open_input_bfds): Completely rewrite. Now does its own looping,
rather than using lang_for_each_statement. Handle groups.
(lang_process): Update call to open_input_bfds.
(print_group): New static function.
(lang_enter_group, lang_leave_group): New static functions.
* ldfile.c (ldfile_open_file): If the file has already been
opened, just return rather than taking an assertion failure.
* ldver.c (help): Mention new options.
* ld.texinfo: Document new options.
* emultempl/linux.em: New file providing support for linking
against Linux shared libraries.
* config/i386-linux.mt (ei386linux.c): Depend upon linux.em.
* emulparams/i386linux.sh (TEMPLATE_NAME): Define as linux.
(ld_emulation_xfer_type): Add new field open_dynamic_archive.
* ldemul.c: Include ldexp.h and ldlang.h.
(ldemul_open_dynamic_archive): New function.
* ldfile.h (ldfile_open_file_search): Declare.
* ldfile.c: Include ldemul.h.
(try_open_bfd): Rename from cache_bfd_openr. Return boolean
argument, not bfd *. Change all callers.
(ldfile_open_file_search): Rename from open_a. Return boolean
argument, not bfd *. Clean up. Change all callers.
(ldfile_open_file): If doing a dynamic link, call
ldemul_open_dynamic_archive rather than assuming the extension of
a dynamic object is ".so".
* emultempl/elf32.em (gld${EMULATION_NAME}_open_dynamic_archive):
New function.
(ld_${EMULATION_NAME}_emulation): Initialize open_dynamic_archive
field.
* emultempl/sunos.em (ld_${EMULATION_NAME}_emulation): Likewise.
* ld.h (args_type): Add new field interpreter.
* lexsup.c (parse_args): Add dynamic-linker to longopts, and
handle it.
* ldmain.c (main): Initialize command_line.interpreter to NULL.
* emultempl/elf32.em (gld${EMULATION_NAME}_before_allocation): Get
the ELF backend to return the .interp section. If
command_line.interpreter is not NULL, set the contents of .interp
to it.
* ld.texinfo: Mention -dynamic-linker.
* lexsup.c (parse_args): Add traditional_format to longopts, and
handle it.
* ldmain.c (main): Initialize config.traditional_format to false.
* ldlang.c (ldlang_open_output): Set BFD_TRADITIONAL_FORMAT in BFD
flags of output_bfd according to config.traditional_format.
* ld.texinfo: Document -traditional-format.
