Backport CL148346 from upstream: --no-canonical-prefixes

gcc/gcc/doc/invoke.texi

Index: gcc/gcc/doc/invoke.texi
diff --git a/gcc/gcc/doc/invoke.texi b/gcc/gcc/doc/invoke.texi
index 9ce803b79361178db7b2f249b06bc159f4628c97..159512782343e33f50e125dfb8ff769b04eb49e4 100644
--- a/gcc/gcc/doc/invoke.texi
+++ b/gcc/gcc/doc/invoke.texi
@@ -162,7 +162,8 @@ in the following sections.
 @table @emph
 @item Overall Options
 @xref{Overall Options,,Options Controlling the Kind of Output}.
-@gccoptlist{-c  -S  -E  -o @var{file}  -combine  -pipe  -pass-exit-codes  @gol
+@gccoptlist{-c  -S  -E  -o @var{file}  -combine  -no-canonical-prefixes  @gol
+-pipe  -pass-exit-codes  @gol
 -x @var{language}  -v  -###  --help@r{[}=@var{class}@r{[},@dots{}@r{]]}  --target-help  @gol
 --version -wrapper@@@var{file}}
 
@@ -1280,6 +1281,12 @@ gcc -c -Q -O2 --help=optimizers > /tmp/O2-opts
 diff /tmp/O2-opts /tmp/O3-opts | grep enabled
 @end smallexample
 
+@item -no-canonical-prefixes
+@opindex no-canonical-prefixes
+Do not expand any symbolic links, resolve references to @samp{/../}
+or @samp{/./}, or make the path absolute when generating a relative
+prefix.
+
 @item --version
 @opindex version
 Display the version number and copyrights of the invoked GCC@.