re PR lto/46273 (Failed to bootstrap)

	PR lto/46273
	* config.gcc: Revert last patch: set lto_binary_reader.

From-SVN: r166207

gcc/ChangeLog

+2010-11-02  Ian Lance Taylor  <iant@google.com>
+
+	PR lto/46273
+	* config.gcc: Revert last patch: set lto_binary_reader.
+
 2010-11-02  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/46149
@@ -88,6 +93,17 @@
 
 2010-11-02  Ian Lance Taylor  <iant@google.com>
 
+	* doc/install.texi (Configuration): Note in two places that Java
+	is not enabled by default.
+
+2010-11-02  Ian Lance Taylor  <iant@google.com>
+
+	* doc/install.texi (Prerequisites): Remove libelf paragraphs.
+	(Configuration): Mention --disable-lto.  Remove --with-libelf
+	paragraph.
+
+2010-11-02  Ian Lance Taylor  <iant@google.com>
+
 	* configure.ac: Remove elf_getshdrstrndx test.  Don't substitute
 	LTO_BINARY_READER or LTO_USE_LIBELF.  Remove LIBELFLIBS and
 	LIBELFINC.  Remove HAVE_libelf.

gcc/config.gcc

@@ -219,6 +219,8 @@ default_gnu_indirect_function=no
 target_gtfiles=
 need_64bit_hwint=
 need_64bit_isa=
+# Selects the object file format reader/writer used by LTO.
+lto_binary_reader=lto-elf
 
 # Don't carry these over build->host->target.  Please.
 xm_file=
@@ -1158,11 +1160,13 @@ i[34567]86-*-darwin*)
 	# support.
 	with_cpu=${with_cpu:-generic}
 	tmake_file="${tmake_file} t-slibgcc-darwin i386/t-crtpc i386/t-crtfm"
+	lto_binary_reader=lto-macho
 	;;
 x86_64-*-darwin*)
 	with_cpu=${with_cpu:-generic}
 	tmake_file="${tmake_file} ${cpu_type}/t-darwin64 t-slibgcc-darwin i386/t-crtpc i386/t-crtfm"
 	tm_file="${tm_file} ${cpu_type}/darwin64.h"
+	lto_binary_reader=lto-macho
 	;;
 i[34567]86-*-elf*)
 	tm_file="${tm_file} i386/unix.h i386/att.h dbxelf.h elfos.h newlib-stdint.h i386/i386elf.h"
@@ -1417,6 +1421,7 @@ i[34567]86-*-pe | i[34567]86-*-cygwin*)
 		thread_file='posix'
 	fi
 	use_gcc_stdint=wrap
+	lto_binary_reader=lto-coff
 	;;
 i[34567]86-*-mingw* | x86_64-*-mingw*)
 	tm_file="${tm_file} i386/unix.h i386/bsd.h i386/gas.h dbxcoff.h i386/cygming.h i386/mingw32.h"
@@ -1489,6 +1494,7 @@ i[34567]86-*-mingw* | x86_64-*-mingw*)
 	cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
 	default_use_cxa_atexit=yes
 	use_gcc_stdint=wrap
+	lto_binary_reader=lto-coff
 	case ${enable_threads} in
 	  "" | yes | win32)	  thread_file='win32'
 	  tmake_file="${tmake_file} i386/t-gthr-win32"
@@ -2000,6 +2006,7 @@ powerpc-*-darwin*)
 	    ;;
 	esac
 	tmake_file="${tmake_file} t-slibgcc-darwin"
+	lto_binary_reader=lto-macho
 	extra_headers=altivec.h
 	;;
 powerpc64-*-darwin*)
@@ -2007,6 +2014,7 @@ powerpc64-*-darwin*)
 	extra_parts="crt2.o"
 	tmake_file="${tmake_file} ${cpu_type}/t-darwin64 t-slibgcc-darwin"
 	tm_file="${tm_file} ${cpu_type}/darwin8.h ${cpu_type}/darwin64.h"
+	lto_binary_reader=lto-macho
 	extra_headers=altivec.h
 	;;
 powerpc*-*-freebsd*)