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

1 files changed, 2 insertions, 24 deletions

diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index 877ae5f..77d36eb 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -355,17 +355,6 @@ not installed in your default library search path.
 
 Necessary to build libgcj, the GCJ runtime.
 
-@item libelf version 0.8.12 (or later)
-
-Necessary to build link-time optimization (LTO) support.  It can be
-downloaded from @uref{http://www.mr511.de/software/libelf-0.8.12.tar.gz},
-though it is commonly available in several systems.  The version in
-IRIX 6.5 doesn't work since it lacks @file{gelf.h}.  The version in
-Solaris 2 does work.
-
-The @option{--with-libelf} configure option should be used if libelf is
-not installed in your default library search patch.
-
 @end table
 
 @heading Tools/packages necessary for modifying GCC
@@ -1650,20 +1639,9 @@ default for a native toolchain with an assembler that accepts it and
 GLIBC 2.11 or above, otherwise disabled.
 
 @item --enable-lto
+@itemx --disable-lto
 Enable support for link-time optimization (LTO).  This is enabled by
-default if a working libelf implementation is found (see
-@option{--with-libelf}).
-
-@item --with-libelf=@var{pathname}
-@itemx --with-libelf-include=@var{pathname}
-@itemx --with-libelf-lib=@var{pathname}
-If you do not have libelf installed in a standard location and you
-want to enable support for link-time optimization (LTO), you can
-explicitly specify the directory where libelf is installed
-(@samp{--with-libelf=@var{libelfinstalldir}}).  The
-@option{--with-libelf=@var{libelfinstalldir}} option is shorthand for
-@option{--with-libelf-include=@var{libelfinstalldir}/include}
-@option{--with-libelf-lib=@var{libelfinstalldir}/lib}.
+default, and may be disabled using @option{--disable-lto}.
 
 @item --enable-gold
 Enable support for using @command{gold} as the linker.  If gold support is