bfd/
* elfcode.h (elf_slurp_symbol_table): Put common plugin IR symbols
in their own common section.
* elflink.c (elf_link_add_object_symbols): Likewise.
* linker.c (generic_link_check_archive_element): Don't lose flags
if common section is pre-existing.
(_bfd_generic_link_add_one_symbol): Likewise.
ld/
* ldfile.c (ldfile_try_open_bfd): Move code creating and switching
to plugin IR BFD..
* ldmain.c (add_archive_element): ..and similar code here..
* plugin.c (plugin_maybe_claim): ..to here. New function.
(plugin_call_claim_file): Make static.
(asymbol_from_plugin_symbol): Set ELF st_shndx for common syms.
(plugin_multiple_common): New function.
(plugin_call_all_symbols_read): Hook in plugin_multiple_common.
* plugin.h (plugin_call_claim_file): Don't declare.
(plugin_maybe_claim): Declare.
(is_ir_dummy_bfd): Delete prototype.
* plugin.c: Fix formatting issues.
(is_ir_dummy_bfd): Make static.
(plugin_active_plugins_p): New function.
* ldfile.c (ldfile_try_open_bfd): Use it to save work if no plugins
are loaded. Always close file descriptor after claim handler returns.
* ldmain.c (add_archive_element): Likewise.
[PATCH] Add infrastructure for plugin API; functionality to follow.
include/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 1/6).
* plugin-api.h (LDPT_GNU_LD_VERSION): New ld_plugin_tag enum member.
ld/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 1/6).
* configure.in: Add AC_CHECKs for file io and dlfcn headers and
functions and AC_SEARCH for -ldl.
(enable_plugins): New shell variable set if above tests find dlopen
functionality.
(ENABLE_PLUGINS): Add related automake conditional.
* configure: Regenerate.
* config.in: Likewise.
* Makefile.am (PLUGIN_C): Declare plugin C source file, conditional
on ENABLE_PLUGINS being defined.
(PLUGIN_H): Likewise for header file.
(PLUGIN_OBJECT): Likewise for object file.
(PLUGIN_CFLAGS): Likewise -D flag required to compile plugin support.
(AM_CPPFLAGS): Use PLUGIN_CFLAGS.
(CFILES): Use PLUGIN_C.
(HFILES): Use PLUGIN_H.
(OFILES): Use PLUGIN_OBJECT.
(ld_new_SOURCES): Use PLUGIN_C.
(noinst_LTLIBRARIES)[ENABLE_PLUGINS]: Declare test plugin.
(libldtestplug_la_SOURCES)[ENABLE_PLUGINS]: Add automake definition
for test plugin.
(libldtestplug_la_CFLAGS)[ENABLE_PLUGINS]: Likewise.
(libldtestplug_la_LDFLAGS)[ENABLE_PLUGINS]: Likewise.
* Makefile.in: Regenerate.
* sysdep.h: Include stdarg.h, unistd.h and one of fcntl.h or
sys/file.h where available. Include dlfcn.h when ENABLE_PLUGINS.
(O_RDONLY): Supply default definition likewise to bfd's sysdep.h
(O_WRONLY): Likewise.
(O_RDWR): Likewise.
(O_ACCMODE): Likewise.
(O_BINARY): Likewise.
(SEEK_SET): Likewise.
(SEEK_CUR): Likewise.
(SEEK_END): Likewise.
* ldmisc.c (vfinfo): Make non-static. Add %p format char.
* ldmisc.h (vfinfo): Declare extern prototype.
* lexsup.c (enum option_values)[ENABLE_PLUGINS]: Add new entries for
OPTION_PLUGIN and OPTION_PLUGIN_OPT.
(ld_options[])[ENABLE_PLUGINS]: Add option data for the above two.
(parse_args)[ENABLE_PLUGINS]: Handle them, and load all plugins once
option parsing is complete.
* ldmain.c (main)[ENABLE_PLUGINS]: Call plugin cleanup hooks just
after lang_finish.
* plugin.c: New source file.
* plugin.h: Likewise new header.
* testplug.c: New source file.
ld/testsuite/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 1/6).
* ld-bootstrap/bootstrap.exp: Skip static tests also if LD plugins
are enabled.
* lib/ld-lib.exp (proc regexp_diff): Extend verbose debug output.
(proc set_file_contents): Write a file with the supplied content.
(run_ld_link_tests): Add new 'ld' action to test linker output.
(proc check_plugin_api_available): Return true if linker under test
supports the plugin API.
* ld-plugin/func.c: New test source file.
* ld-plugin/main.c: Likewise.
* ld-plugin/text.c: Likewise.
* ld-plugin/plugin-1.d: New dump test output pattern script.
* ld-plugin/plugin-2.d: Likewise.
* ld-plugin/plugin-3.d: Likewise.
* ld-plugin/plugin-4.d: Likewise.
* ld-plugin/plugin-5.d: Likewise.
* ld-plugin/plugin.exp: New test control script.
---
[PATCH] Implement claim file and all symbols read hooks and add symbols callback.
ld/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 2/6).
* ldfile.c (ldfile_try_open_bfd)[ENABLE_PLUGINS]: Don't return early
during compat checks if they pass, instead offer any successfully
opened and accepted file to the plugin claim file hooks chain. Create
a dummy bfd to accept symbols added by the plugin, if the plugin
claims the file.
* ldlang.c (lang_process)[ENABLE_PLUGINS]: Call plugin all symbols
read hook chain before ldemul_after_open.
* ldlang.h (struct lang_input_statement_struct): Add new single-bit
'claimed' flag.
* plugin.c (IRONLY_SUFFIX): New macro for dummy bfd file suffix.
(IRONLY_SUFFIX_LEN): Length of the above string.
(plugin_get_ir_dummy_bfd): New function to create the dummy bfd used
to store symbols for ir-only files.
(is_ir_dummy_bfd): New function to check if a bfd is ir-only.
(asymbol_from_plugin_symbol): New function converts symbol formats.
(add_symbols): Call it to convert plugin syms to bfd syms and add
them to the dummy bfd.
* plugin.h: Add missing include guards.
(plugin_get_ir_dummy_bfd): Add prototype.
(is_ir_dummy_bfd): Likewise.
* testplug.c (TV_MESSAGE): New helper macro.
(struct claim_file): New struct.
(claim_file_t): New typedef.
(tag_names[]): Make static and const.
(claimfiles_list): New variable.
(claimfiles_tail_chain_ptr): Likewise.
(last_claimfile): Likewise.
(record_claim_file): Record a file to claim on a singly-linked list.
(parse_symdefstr): Parse an ASCII representation of a symbol from a
plugin option into the fields of a struct ld_plugin_symbol.
(record_claimed_file_symbol): Use it to parse plugin option for
adding a symbol.
(parse_option): Parse claim file and add symbol options.
(dump_tv_tag): Use TV_MESSAGE.
(onload): Likewise.
(onclaim_file): Make static. Use TV_MESSAGE. Scan list of files to
claim and claim this file if required, adding any symbols specified.
(onall_symbols_read): Make static and use TV_MESSAGE.
(oncleanup): Likewise.
ld/testsuite/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 2/6).
* ld-plugin/plugin-3.d: Enable regexes for new functionality.
* ld-plugin/plugin-5.d: Likewise.
* ld-plugin/plugin-6.d: New testcase.
* ld-plugin/plugin-7.d: Likewise.
* ld-plugin/plugin.exp: Use 'nm' on compiled test objects to determine
whether symbols in plugin arguments need an underscore prefix. Add
new plugin-6.d and plugin-7.d testcases.
---
[PATCH] Implement get symbols callback.
ld/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 3/6).
* ldmain.c (notice)[ENABLE_PLUGINS]: Call plugin_notice.
* plugin.c (non_ironly_hash): Add new bfd hash table.
(plugin_load_plugins): Exit early if no plugins to load. If plugins
do load successfully, set notice_all flag in link info.
(get_symbols): Implement.
(plugin_load_plugins): Exit early if no plugins to load, else after
loading plugins successfully enable notice_all mode.
(init_non_ironly_hash): Lazily init non_ironly_hash table.
(plugin_notice): Record symbols referenced from non-IR files in the
non_ironly_hash. Suppress tracing, cref generation and nocrossrefs
tracking for symbols from dummy IR bfds.
* plugin.h: Fix formatting.
(plugin_notice): Add prototype.
* testplug.c (dumpresolutions): New global var.
(parse_options): Accept "dumpresolutions".
(onall_symbols_read): Get syms and dump resolutions if it was given.
ld/testsuite/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 3/6).
* ld-plugin/plugin-8.d: New testcase.
* ld-plugin/plugin.exp: Invoke it.
---
[PATCH] Implement add input file, add input lib and set extra lib path callbacks.
ld/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 4/6).
* ldlang.c (lang_process)[ENABLE_PLUGINS]: Move invocation of
plugin_call_all_symbols_read to before setting of gc_sym_list, and
open any new input files that may have been added during it.
* ldmain.c (multiple_definition)[ENABLE_PLUGINS]: Call out to
plugin_multiple_definition and let it have first say over what to do
with the clashing definitions.
* plugin.c (no_more_claiming): New boolean variable.
(plugin_cached_allow_multiple_defs): Likewise.
(add_input_file): Implement.
(add_input_library): Likewise.
(set_extra_library_path): Likewise.
(plugin_call_claim_file): Don't do anything when no_more_claiming set.
(plugin_call_all_symbols_read): Set it. Disable link info
"allow_multiple_definition" flag, but cache its value.
(plugin_multiple_definition): New function.
* plugin.h (plugin_multiple_definition): Add prototype.
* testplug.c (addfile_enum_t): New enumerated typedef.
(add_file_t): New struct typedef.
(addfiles_list): New variable.
(addfiles_tail_chain_ptr): Likewise.
(record_add_file): New function.
(parse_option): Parse "add:", "lib:" and "dir:" options and call it.
(onall_symbols_read): Iterate the list of new files, libs and dirs,
adding them.
ld/testsuite/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 4/6).
* ld-plugin/plugin-9.d: New testcase.
* ld-plugin/plugin.exp: Invoke it.
---
[PATCH] Add ELF symbol visibility support to plugin interface.
ld/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 5/6).
* plugin.c (asymbol_from_plugin_symbol): If the bfd is an ELF bfd,
find the elf symbol data and set the visibility in the st_other field.
ld/testsuite/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 5/6).
* ld-plugin/plugin-ignore.d: New dump test control script.
* ld-plugin/plugin-vis-1.d: Likewise.
* ld-plugin/plugin.exp: Add list of ELF-only tests and run them if
testing on an ELF target.
---
[PATCH] Add archive support to plugin interface.
bfd/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 6/6).
* aoutx.h (aout_link_check_ar_symbols): Take new "subsbfd" reference
parameter and pass it when invoking add_archive_element callback.
(aout_link_check_archive_element): Handle substitute bfd if it
was set during add_archive_element callback in the above.
* cofflink.c (coff_link_check_ar_symbols): Take new "subsbfd" reference
parameter and pass it when invoking add_archive_element callback.
(coff_link_check_archive_element): Handle substitute bfd if it
was set during add_archive_element callback in the above.
* ecoff.c (read_ext_syms_and_strs): New function holds symbol-reading
code factored-out from ecoff_link_check_archive_element.
(reread_ext_syms_and_strs): Clear old symbols and call it.
(ecoff_link_check_archive_element): Use the above. Handle substitute
BFD if one is set by add_archive_element callback.
(ecoff_link_add_archive_symbols): Likewise allow bfd substitution.
* elflink.c (elf_link_add_archive_symbols): Likewise.
* linker.c (generic_link_check_archive_element): Likewise.
* pdp11.c (aout_link_check_ar_symbols): Take new "subsbfd" reference
parameter and pass it when invoking add_archive_element callback.
(aout_link_check_archive_element): Handle substitute bfd if it was
set during add_archive_element callback in the above.
* vms-alpha.c (alpha_vms_link_add_archive_symbols): Handle substitute
BFD if one is set by add_archive_element callback.
* xcofflink.c (xcoff_link_check_dynamic_ar_symbols): Take new "subsbfd"
reference parameter and pass it when invoking add_archive_element
callback.
(xcoff_link_check_ar_symbols): Likewise.
(xcoff_link_check_archive_element): Handle bfd substitution if it was
set by callback in the above.
include/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 6/6).
* bfdlink.h (struct_bfd_link_callbacks): Document new argument
to add_archive_element callback used to return a replacement bfd which
is to be added to the hash table in place of the original element.
ld/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 6/6).
* ldlang.c (load_symbols): Handle bfd subsitution when calling the
add_archive_element callback.
* ldmain.c (add_archive_element)[ENABLE_PLUGINS]: Offer the archive
member to the plugins and if claimed set "subsbfd" output parameter to
point to the dummy IR-only BFD.
ld/testsuite/ChangeLog:
2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com>
Apply LD plugin patch series (part 6/6).
* ld-plugin/plugin-10.d: New dump test control script.
* ld-plugin/plugin-11.d: Likewise.
* ld-plugin/plugin.exp: Run them.
---
* ldfile.c: (ldfile_open_file): Do not stop link upon encountering
a missing file or library. Instead mark the entry as missing and
set the global flag to indicate that missing files were
encountered.
* ldlang.c (missing_files): New exported variable.
(load_symbols): Skip loading if the file is missing.
(open_input_bfds): Terminate link if any input files were
missing.
* ldlang.h (struct lang_input_statement_struct): Add missing_file
field.
Add export of missing_file variable.
keyword in c++.
* bfd/aoutx.h (NAME (aout, make_empty_symbol)): Rename variable
new to new_symbol.
* bfd/coffgen.c (coff_make_empty_symbol)
(coff_bfd_make_debug_symbol): Rename variable new to new_symbol.
* bfd/cpu-ia64-opc.c (ext_reg, ins_imms_scaled): Rename variable
new to new_insn.
* bfd/doc/chew.c (newentry, add_intrinsic): Rename variable new to
new_d.
* bfd/ecoff.c (_bfd_ecoff_make_empty_symbol): Rename variable new
to new_symbol.
* bfd/elf32-m68k.c (elf_m68k_get_got_entry_type): Rename argument
new to new_reloc.
* bfd/hash.c (bfd_hash_lookup): Rename variable new to new_string.
* bfd/ieee.c (ieee_make_empty_symbol): Rename variable new to
new_symbol.
* bfd/linker.c (bfd_new_link_order): Rename variable new to
new_lo.
* bfd/mach-o.c (bfd_mach_o_sizeof_headers): Rename variable new to
symbol.
* bfd/oasys.c (oasys_make_empty_symbol): Rename variable new to
new_symbol_type.
* bfd/pdp11.c (NAME (aout, make_empty_symbol)): Rename variable
new to new_symbol_type.
* bfd/plugin.c (bfd_plugin_make_empty_symbol): Rename variable new
to new_symbol.
* bfd/rs6000-core.c (CoreHdr, VmInfo): Rename union member new to
new_dump.
(read_hdr, rs6000coff_core_p)
(rs6000coff_core_file_matches_executable_p)
(rs6000coff_core_file_failing_command)
(rs6000coff_core_file_failing_signal): Updated function to use new
union member name.
* bfd/som.c (som_make_empty_symbol): Rename variable new to
new_symbol_type.
* bfd/syms.c (_bfd_generic_make_empty_symbol): Rename variable new
to new_symbol.
* bfd/tekhex.c (first_phase, tekhex_make_empty_symbol): Rename
variable new to new_symbol.
* binutils/nlmconv.c (main): Rename variable new to new_name.
* gas/config/tc-arm.c (insert_reg_alias): Rename variable new to
new_reg.
* gas/config/tc-dlx.c (parse_operand): Rename variable new to
new_pos.
* gas/config/tc-ia64.c (ia64_gen_real_reloc_type): Rename variable
new to newr.
* gas/config/tc-mcore.c (parse_exp, parse_imm): Rename variable
new to new_pointer.
* gas/config/tc-microblaze.c (parse_exp, parse_imm, check_got):
Change name from new to new_pointer.
* gas/config/tc-or32.c (parse_operand): Rename variable new to
new_pointer.
* gas/config/tc-pdp11.c (md_assemble): Rename variable new to
new_pointer.
* gas/config/tc-pj.c (alias): Change argument new to new_name.
* gas/config/tc-score.c (s3_build_score_ops_hsh): Rename variable
new to new_opcode. (s3_build_dependency_insn_hsh) Rename variable
new to new_i2n. (s3_convert): Rename variables old and new to
r_old and r_new.
* gas/config/tc-score7.c (s7_build_score_ops_hsh): Rename variable
new to new_opcode. (s7_build_dependency_insn_hsh): Rename variable
new to new_i2d. (s7_b32_relax_to_b16, s7_convert_frag): Rename
variables old and new to r_old and r_new.
* gas/config/tc-sh.c (parse_exp): Rename variable new to
new_pointer.
* gas/config/tc-sh64.c (shmedia_parse_exp): Rename variable new to
new_pointer.
* gas/config/tc-tic4x.c (tic4x_operand_parse): Rename variable new
to new_pointer.
* gas/config/tc-z8k.c (parse_exp): Rename variable new to
new_pointer.
* gas/listing.c (listing_newline): Rename variable new to new_i.
* ld/ldexp.c (exp_intop, exp_bigintop, exp_relop, exp_binop)
(exp_trinop, exp_unop, exp_nameop, exp_assop): Rename variable new
to new_e.
* ld/ldfile.c (ldfile_add_library_path): Rename variable new to
new_dirs. (ldfile_add_arch): Rename variable new to new_arch.
* ld/ldlang.c (new_statement, lang_final, lang_add_wild)
(lang_target, lang_add_fill, lang_add_data, lang_add_assignment)
(lang_add_insert): Rename variable new to new_stmt. (new_afile):
Added missing cast. (lang_memory_region_lookup): Rename variable
new to new_region. (init_os): Rename variable new to
new_userdata. (lang_add_section): Rename variable new to
new_section. (ldlang_add_undef): Rename variable new to
new_undef. (realsymbol): Rename variable new to new_name.
* opcodes/z8kgen.c (internal, gas): Rename variable new to new_op.
Updated sources to avoid using the identifier name "template",
which is a keyword in c++.
* bfd/elf32-arm.c (struct stub_def): Rename member template to
template_sequence. (arm_build_one_stub,
find_stub_size_and_template, arm_size_one_stub, arm_map_one_stub):
Rename variable template to template_sequence.
* bfd/elfxx-ia64.c (elfNN_ia64_relax_br, elfNN_ia64_relax_brl):
Rename variable template to template_val.
* gas/config/tc-arm.c (struct asm_cond, struct asm_psr, struct
asm_barrier_opt): Change member template to
template_name. (md_begin): Update code to reflect new member
names.
* gas/config/tc-i386.c (struct templates, struct _i386_insn)
(match_template, cpu_flags_match, match_reg_size, match_mem_size)
(operand_size_match, md_begin, i386_print_statistics, pi)
(build_vex_prefix, md_assemble, parse_insn, optimize_imm)
(optimize_disp): Updated code to use new names. (parse_insn):
Added casts.
* gas/config/tc-ia64.c (dot_template, emit_one_bundle): Updated
code to use new names.
* gas/config/tc-score.c (struct s3_asm_opcode): Renamed member
template to template_name. (s3_parse_16_32_inst, s3_parse_48_inst,
s3_do_macro_ldst_label, s3_build_score_ops_hsh): Update code to
use new names.
* gas/config/tc-score7.c (struct s7_asm_opcode): Renamed member
template to template_name. (s7_parse_16_32_inst,
s7_do_macro_ldst_label, s7_build_score_ops_hsh): Update code to
use new names.
* gas/config/tc-tic30.c (md_begin, struct tic30_insn)
(md_assemble): Update code to use new names.
* gas/config/tc-tic54x.c (struct _tic54x_insn, md_begin)
(optimize_insn, tic54x_parse_insn, next_line_shows_parallel):
Update code to use new names.
* include/opcode/tic30.h (template): Rename type template to
insn_template. Updated code to use new name.
* include/opcode/tic54x.h (template): Rename type template to
insn_template.
* opcodes/cris-dis.c (bytes_to_skip): Update code to use new name.
* opcodes/i386-dis.c (putop): Update code to use new name.
* opcodes/i386-gen.c (process_i386_opcodes): Update code to use
new name.
* opcodes/i386-opc.h (struct template): Rename struct template to
insn_template. Update code accordingly.
* opcodes/i386-tbl.h (i386_optab): Update type to use new name.
* opcodes/ia64-dis.c (print_insn_ia64): Rename variable template
to template_val.
* opcodes/tic30-dis.c (struct instruction, get_tic30_instruction):
Update code to use new name.
* opcodes/tic54x-dis.c (has_lkaddr, get_insn_size)
(print_parallel_instruction, print_insn_tic54x, tic54x_get_insn):
Update code to use new name.
* opcodes/tic54x-opc.c (tic54x_unknown_opcode, tic54x_optab):
Update type to new name.
searches for a linker script unless -T option is specified.
* ldfile.c (ldfile_find_command_file): Append the path obtained
from the program name to the search path instead of
prepending. Add a new parameter "default_only". Restrict the
search to the default script location if the new parameter is
true.
(ldfile_open_command_file_1): New.
(ldfile_open_command_file): Call ldfile_open_command_file_1.
(ldfile_open_default_command_file): New.
* ldmain.c (check_for_scripts_dir, set_scripts_dir): Delete.
(main): Don't set_scripts_dir here.
* ldfile.c (check_for_scripts_dir, find_scripts_dir): New functions,
largely based on ldmain.c versions.
(ldfile_find_command_file): Set up search in script dir here without
affecting library search.
* Makefile.am (ldmain.o): No need to define SCRIPTDIR.
(ldfile.o): New rule.
* Makefile.in: Regenerate.
(try_open): Don't use a fixed size pathname buffer.
(ldfile_find_command_file): Likewise.
* emultempl/elf32.em (gld${EMULATION_NAME}_open_dynamic_archive): If
using EXTRA_SHLIB_EXTENSION, don't open twice.
ldfile.c: Include pathnames.h. (is_sysrooted_pathname): New. (ldfile_add_library_path): Use it.
(ldfile_open_file_search): Likewise. Use IS_ABSOLUTE_PATH.
Don't search_dirs if given an absolute pathname.
(ldfile_open_file): Issue error message for sysrooted absolute pathnames.
* ldlang.h (struct lang_input_statement_struct): Likewise.
* ldfile.c (ldfile_add_library_path): Mark sysrooted paths.
(ldfile_open_file_search): Look for sysrooted filename starting
with / in ld_sysroot instead of in the current directory. Clear
sysrooted flag if it's found in the current directory. Set it
from the search directory's sysrooted flag where it is found
otherwise.
* ldlang.c (ldlang_sysrooted_script): New static variable.
(new_afile): Mark search_file_enums as sysrooted if
ldlang_sysrooted_script.
(load_symbols): Set ldlang_sysrooted_script according to the
script's sysrooted field while processing it.
* ld.texinfo: Document INPUT behavior in sysroot.
they have OUTPUT_FORMAT not matching actual output format.
* ldlang.c (lang_get_output_target): New function.
(open_output): Use it.
* ldlang.h (lang_get_output_target): New prototype.
* ld.texinfo (Options): Document new option, -nostdlib.
* lexsup.c (OPTION_NOSTDLIB): New definition.
(ld_options): Add entry for "nostdlib".
(parse_args): Handle OPTIONS_NOSTDLIB.
* ldfile.c (ldfile_add_library_path): Don't add directories
to the search path if they weren't specified on the command line
and -nostdlib was specified.
* ld.h (ld_config_type): New member only_cmd_line_lib_dirs.
