re PR lto/46273 (Failed to bootstrap)

ChangeLog:

2010-11-03  Ian Lance Taylor  <iant@google.com>
	    Dave Korn  <dave.korn.cygwin@gmail.com>

	PR lto/46273
	* configure.ac: Remove libelf tests.  Build lto-plugin on ELF always
	and on other supported platforms whenever LTO is enabled.
	* configure: Rebuild.

gcc/ChangeLog:

2010-11-03  Ian Lance Taylor  <iant@google.com>

	PR lto/46273
	* gcc/config.gcc: Don't set lto_binary_reader.
	* doc/install.texi (Prerequisites): Remove libelf paragraphs.
	(Configuration): Mention --disable-lto.  Remove --with-libelf
	paragraph.

lto-plugin/ChangeLog:

2010-11-03  Dave Korn  <dave.korn.cygwin@gmail.com>

	PR lto/46273
	* lto-plugin.h: Delete.
	* lto-plugin-elf.c: Likewise.
	* lto-plugin-coff.c: Likewise.
	* configure.ac: Don't use libelf, don't source config.gcc.
	(LIBELFLIBS): Delete.
	(LIBELFINC): Delete.
	(LTO_FORMAT): Delete.
	(SYM_STYLE): Add AC_DEFINE var, set based on $target.
	(config.h): Add AC_CONFIG_HEADERS directive.
	* Makefile.am (LIBELFLIBS): Delete.
	(LIBELFINC): Delete.
	(LTO_FORMAT): Delete.
	(DEFS): Import.
	(AM_CPPFLAGS): Use it.  Don't use LIBELFINC.
	(liblto_plugin_la_SOURCES): Don't use LTO_FORMAT, don't include
	any object-format-specific source file in the link.
	(liblto_plugin_la_LIBADD): Don't use LIBELFLIBS.
	* config.h.in: Generate.
	* configure: Regenerate.
	* Makefile.in: Likewise.
	* lto-plugin.c (O_BINARY): Definition moved here from lto-plugin.h.
	(LTO_SEGMENT_NAME): New definition.
	(LTO_SECTION_PREFIX): Definition moved here from lto-plugin.h.
	(LTO_SECTION_PREFIX_LEN): New definition.
	(struct sym_aux): Struct definition moved here from lto-plugin.h.
	(struct plugin_symtab): Likewise.
	(struct plugin_objfile): Likewise.
	(struct plugin_objfile): New struct def.
	(enum symbol_style): New enum type.
	(add_symbols): Make static.
	(claimed_files): Likewise.
	(num_claimed_files): Likewise.
	(sym_style): New global.
	(check): Make static.
	(parse_table_entry): Likewise.  Respect sym_style when extracting
	symbol from symtab entry.
	(translate): Make static.
	(resolve_conflicts): Likewise.
	(process_symtab): New function, per-section callback version of
	old object-format-specific handling from deleted lto-plugin-elf.c.
	(claim_file_handler): Convert ELF-specific version from deleted
	lto-plugin-elf.c to simple_object interface and move here.
	(process_options): Allow new '-sym-style=' option.
	(onload): Don't call deleted onload_format_checks hook.

From-SVN: r166233