initial buildroot for linux 5.15

package/libglib2/0001-fix-compile-time-atomic-detection.patch

@@ -0,0 +1,34 @@
+From d5c628a6179b99705fa05ab87437321b132c81bc Mon Sep 17 00:00:00 2001
+From: Brendan Heading <brendanheading@gmail.com>
+Date: Wed, 21 Jun 2017 16:36:15 -0400
+Subject: [PATCH] Fix compile time atomic detection
+
+Improved compile-time detection of atomic support in the compiler.
+
+Upstream-Status: 'Needs information'
+See : https://gitlab.gnome.org/GNOME/glib/issues/1063
+
+Signed-off-by: Brendan Heading <brendanheading@gmail.com>
+Signed-off-by: Adam Duskett <aduskett@gmail.com>
+Refresh for 2.68.1
+---
+ glib/gthread-posix.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/glib/gthread-posix.c b/glib/gthread-posix.c
+index 71a6b7b..d09d029 100644
+--- a/glib/gthread-posix.c
++++ b/glib/gthread-posix.c
+@@ -72,8 +72,7 @@
+ #include <sys/syscall.h>
+ #endif
+ 
+-#if defined(HAVE_FUTEX) && \
+-    (defined(HAVE_STDATOMIC_H) || defined(__ATOMIC_SEQ_CST))
++#if defined(HAVE_FUTEX) && defined(__ATOMIC_SEQ_CST) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) && !defined(__clang__)
+ #define USE_NATIVE_MUTEX
+ #endif
+ 
+-- 
+2.9.4
+