diff -urN gcc-4.6.3-orig/gcc/ChangeLog gcc-4.6.3/gcc/ChangeLog
--- gcc-4.6.3-orig/gcc/ChangeLog	2013-05-04 21:50:25 +0900
+++ gcc-4.6.3/gcc/ChangeLog	2013-05-04 21:51:16 +0900
@@ -269,6 +269,13 @@
 	* fold-const.c (fold_checksum_tree): Check for TS_TYPED structure
 	before using TREE_TYPE accessor on expr.
 
+2012-02-02  Andrew Church  <achurch@achurch.org>
+
+	* c-family/c-opts.c (case OPT_I): Undeprecate -I- support.
+	* doc/invoke.texi: Likewise.
+	* doc/cpp.texi: Likewise.
+	* doc/cppopts.texi: Likewise.
+
 2012-01-12  Georg-Johann Lay  <avr@gjlay.de>
 
 	Backport from mainline r183796
diff -urN gcc-4.6.3-orig/gcc/c-family/c-opts.c gcc-4.6.3/gcc/c-family/c-opts.c
--- gcc-4.6.3-orig/gcc/c-family/c-opts.c	2011-01-26 15:48:04 +0900
+++ gcc-4.6.3/gcc/c-family/c-opts.c	2013-05-04 21:50:25 +0900
@@ -303,7 +303,6 @@
 	    error ("-I- specified twice");
 	  quote_chain_split = true;
 	  split_quote_chain ();
-	  inform (input_location, "obsolete option -I- used, please use -iquote instead");
 	}
       break;
 
diff -urN gcc-4.6.3-orig/gcc/doc/cpp.1 gcc-4.6.3/gcc/doc/cpp.1
--- gcc-4.6.3-orig/gcc/doc/cpp.1	2012-03-01 21:10:53 +0900
+++ gcc-4.6.3/gcc/doc/cpp.1	2013-05-04 21:50:25 +0900
@@ -596,8 +596,6 @@
 .Sp
 In addition, \fB\-I\-\fR inhibits the use of the directory of the current
 file directory as the first search directory for \f(CW\*(C`#include\ "\f(CIfile\f(CW"\*(C'\fR.
-.Sp
-This option has been deprecated.
 .IP "\fB\-nostdinc\fR" 4
 .IX Item "-nostdinc"
 Do not search the standard system directories for header files.
diff -urN gcc-4.6.3-orig/gcc/doc/cpp.info gcc-4.6.3/gcc/doc/cpp.info
--- gcc-4.6.3-orig/gcc/doc/cpp.info	2012-03-01 21:38:51 +0900
+++ gcc-4.6.3/gcc/doc/cpp.info	2013-05-04 21:50:25 +0900
@@ -814,7 +814,6 @@
 Directories after `-I-' are searched for all headers.  Second, the
 directory containing the current file is not searched for anything,
 unless it happens to be one of the directories named by an `-I' switch.
-`-I-' is deprecated, `-iquote' should be used instead.
 
    `-I. -I-' is not the same as no `-I' options at all, and does not
 cause the same behavior for `<>' includes that `""' includes get with
@@ -3917,11 +3916,6 @@
 used 2.96 and 2.97 development snapshots.  Where there are differences,
 they generally represent bugs in the snapshots.
 
-   * -I- deprecated
-
-     This option has been deprecated in 4.0.  `-iquote' is meant to
-     replace the need for this option.
-
    * Order of evaluation of `#' and `##' operators
 
      The standard does not specify the order of evaluation of a chain of
@@ -4358,7 +4352,7 @@
 
      In addition, `-I-' inhibits the use of the directory of the current
      file directory as the first search directory for `#include "FILE"'.
-     *Note Search Path::.  This option has been deprecated.
+     *Note Search Path::.
 
 `-nostdinc'
      Do not search the standard system directories for header files.
diff -urN gcc-4.6.3-orig/gcc/doc/cpp.texi gcc-4.6.3/gcc/doc/cpp.texi
--- gcc-4.6.3-orig/gcc/doc/cpp.texi	2011-02-26 08:24:50 +0900
+++ gcc-4.6.3/gcc/doc/cpp.texi	2013-05-04 21:50:25 +0900
@@ -898,8 +898,7 @@
 quote marks.  Directories after @option{-I-} are searched for all
 headers.  Second, the directory containing the current file is not
 searched for anything, unless it happens to be one of the directories
-named by an @option{-I} switch.  @option{-I-} is deprecated, @option{-iquote}
-should be used instead.
+named by an @option{-I} switch.
 
 @option{-I. -I-} is not the same as no @option{-I} options at all, and does
 not cause the same behavior for @samp{<>} includes that @samp{""}
@@ -4290,11 +4289,6 @@
 
 @itemize @bullet
 
-@item -I- deprecated
-
-This option has been deprecated in 4.0.  @option{-iquote} is meant to
-replace the need for this option.
-
 @item Order of evaluation of @samp{#} and @samp{##} operators
 
 The standard does not specify the order of evaluation of a chain of
diff -urN gcc-4.6.3-orig/gcc/doc/cppopts.texi gcc-4.6.3/gcc/doc/cppopts.texi
--- gcc-4.6.3-orig/gcc/doc/cppopts.texi	2010-12-20 16:26:12 +0900
+++ gcc-4.6.3/gcc/doc/cppopts.texi	2013-05-04 21:50:25 +0900
@@ -430,7 +430,6 @@
 @ifset cppmanual
 @xref{Search Path}.
 @end ifset
-This option has been deprecated.
 
 @item -nostdinc
 @opindex nostdinc
diff -urN gcc-4.6.3-orig/gcc/doc/g++.1 gcc-4.6.3/gcc/doc/g++.1
--- gcc-4.6.3-orig/gcc/doc/g++.1	2012-03-01 21:38:54 +0900
+++ gcc-4.6.3/gcc/doc/g++.1	2013-05-04 21:50:25 +0900
@@ -8591,7 +8591,6 @@
 .Sp
 In addition, \fB\-I\-\fR inhibits the use of the directory of the current
 file directory as the first search directory for \f(CW\*(C`#include\ "\f(CIfile\f(CW"\*(C'\fR.
-This option has been deprecated.
 .IP "\fB\-nostdinc\fR" 4
 .IX Item "-nostdinc"
 Do not search the standard system directories for header files.
diff -urN gcc-4.6.3-orig/gcc/doc/gcc.1 gcc-4.6.3/gcc/doc/gcc.1
--- gcc-4.6.3-orig/gcc/doc/gcc.1	2012-03-01 21:38:54 +0900
+++ gcc-4.6.3/gcc/doc/gcc.1	2013-05-04 21:50:25 +0900
@@ -8591,7 +8591,6 @@
 .Sp
 In addition, \fB\-I\-\fR inhibits the use of the directory of the current
 file directory as the first search directory for \f(CW\*(C`#include\ "\f(CIfile\f(CW"\*(C'\fR.
-This option has been deprecated.
 .IP "\fB\-nostdinc\fR" 4
 .IX Item "-nostdinc"
 Do not search the standard system directories for header files.
@@ -9236,8 +9235,6 @@
 library aspect will not.
 .IP "\fB\-I\-\fR" 4
 .IX Item "-I-"
-This option has been deprecated.  Please use \fB\-iquote\fR instead for
-\&\fB\-I\fR directories before the \fB\-I\-\fR and remove the \fB\-I\-\fR.
 Any directories you specify with \fB\-I\fR options before the \fB\-I\-\fR
 option are searched only for the case of \fB#include "\fR\fIfile\fR\fB"\fR;
 they are not searched for \fB#include <\fR\fIfile\fR\fB>\fR.
diff -urN gcc-4.6.3-orig/gcc/doc/gcc.info gcc-4.6.3/gcc/doc/gcc.info
--- gcc-4.6.3-orig/gcc/doc/gcc.info	2012-03-01 21:38:52 +0900
+++ gcc-4.6.3/gcc/doc/gcc.info	2013-05-04 21:50:25 +0900
@@ -8721,7 +8721,6 @@
 
      In addition, `-I-' inhibits the use of the directory of the current
      file directory as the first search directory for `#include "FILE"'.
-     This option has been deprecated.
 
 `-nostdinc'
      Do not search the standard system directories for header files.
@@ -9371,11 +9370,9 @@
      the library aspect will not.
 
 `-I-'
-     This option has been deprecated.  Please use `-iquote' instead for
-     `-I' directories before the `-I-' and remove the `-I-'.  Any
-     directories you specify with `-I' options before the `-I-' option
-     are searched only for the case of `#include "FILE"'; they are not
-     searched for `#include <FILE>'.
+     Any directories you specify with `-I' options before the `-I-'
+     option are searched only for the case of `#include "FILE"'; they
+     are not searched for `#include <FILE>'.
 
      If additional directories are specified with `-I' options after
      the `-I-', these directories are searched for all `#include'
diff -urN gcc-4.6.3-orig/gcc/doc/invoke.texi gcc-4.6.3/gcc/doc/invoke.texi
--- gcc-4.6.3-orig/gcc/doc/invoke.texi	2012-01-04 01:43:38 +0900
+++ gcc-4.6.3/gcc/doc/invoke.texi	2013-05-04 21:50:25 +0900
@@ -9338,8 +9338,6 @@
 
 @item -I-
 @opindex I-
-This option has been deprecated.  Please use @option{-iquote} instead for
-@option{-I} directories before the @option{-I-} and remove the @option{-I-}.
 Any directories you specify with @option{-I} options before the @option{-I-}
 option are searched only for the case of @samp{#include "@var{file}"};
 they are not searched for @samp{#include <@var{file}>}.
