[gcc r16-6123] doc: Document --with-windres in install.texi [PR108866]

[Jonathan Yong]

https://gcc.gnu.org/g:5fb1c9eba483548c53220ceab108e7b7c52aa5e3

commit r16-6123-g5fb1c9eba483548c53220ceab108e7b7c52aa5e3
Author: Peter Damianov <peter0x44@disroot.org>
Date:   Thu Dec 11 01:52:44 2025 +0000

    doc: Document --with-windres in install.texi [PR108866]
    
    gcc/ChangeLog:
    
            PR target/108866
            * doc/install.texi: Document --with-windres configure option.
    
    Signed-off-by: Peter Damianov <peter0x44@disroot.org>
    Signed-off-by: Jonathan Yong <10walls@gmail.com>

Diff:
---
 gcc/doc/install.texi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index 67553ffae694..76ab36e53f3c 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -1244,6 +1244,10 @@ but for the linker.
 Same as @uref{#with-as,,@option{--with-as}}
 but for the debug linker (only used on Darwin platforms so far).
 
+@item --with-windres=@var{pathname}
+Same as @uref{#with-as,,@option{--with-as}}
+but for the Windows resource compiler.
+
 @item --with-tls=@var{dialect}
 Specify the default TLS dialect, for systems were there is a choice.
 For ARM targets, possible values for @var{dialect} are @code{gnu} or