[gcc r12-10264] libstdc++: Disable Doxygen GROUP_NESTED_COMPOUNDS config option

[Jonathan Wakely <redi@gcc.gnu.org>]

https://gcc.gnu.org/g:d9f006da30def40747792d3ea37add1d80e02444

commit r12-10264-gd9f006da30def40747792d3ea37add1d80e02444
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed May 11 16:46:03 2022 +0100

    libstdc++: Disable Doxygen GROUP_NESTED_COMPOUNDS config option
    
    Before Doxygen version 1.9.2 this option is broken (see
    https://github.com/doxygen/doxygen/issues/8638 for more details) and
    classes are not added to the correct groups by @ingroup and @addtogroup.
    
    Also remove the obsolete CLASS_DIAGRAMS option that causes a warning.
    
    libstdc++-v3/ChangeLog:
    
            * doc/doxygen/user.cfg.in (GROUP_NESTED_COMPOUNDS): Set to NO.
            (CLASS_DIAGRAMS): Remove obsolete option.
    
    (cherry picked from commit 9c3a8fe34aeacabc2f62acef7f8f9108cb109238)

Diff:
---
 libstdc++-v3/doc/doxygen/user.cfg.in | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/libstdc++-v3/doc/doxygen/user.cfg.in b/libstdc++-v3/doc/doxygen/user.cfg.in
index bdff43c5f0a..b095addd10c 100644
--- a/libstdc++-v3/doc/doxygen/user.cfg.in
+++ b/libstdc++-v3/doc/doxygen/user.cfg.in
@@ -388,7 +388,7 @@ DISTRIBUTE_GROUP_DOC   = YES
 # is disabled and one has to add nested compounds explicitly via \ingroup.
 # The default value is: NO.
 
-GROUP_NESTED_COMPOUNDS = YES
+GROUP_NESTED_COMPOUNDS = NO
 
 # Set the SUBGROUPING tag to YES to allow class member groups of the same type
 # (for instance a group of public functions) to be put as a subgroup of that
@@ -2473,15 +2473,6 @@ EXTERNAL_PAGES         = YES
 # Configuration options related to the dot tool
 #---------------------------------------------------------------------------
 
-# If the CLASS_DIAGRAMS tag is set to YES, doxygen will generate a class diagram
-# (in HTML and LaTeX) for classes with base or super classes. Setting the tag to
-# NO turns the diagrams off. Note that this option also works with HAVE_DOT
-# disabled, but it is recommended to install and use dot, since it yields more
-# powerful graphs.
-# The default value is: YES.
-
-CLASS_DIAGRAMS         = YES
-
 # You can include diagrams made with dia in doxygen documentation. Doxygen will
 # then run dia to produce the diagram and insert it in the documentation. The
 # DIA_PATH tag allows you to specify the directory where the dia binary resides.