From 586c2d01565fca083837e09f217d61e8d7ca7ae2 Mon Sep 17 00:00:00 2001
From: Alexey Neyman <stilor@att.net>
Date: Fri, 4 Feb 2022 10:31:25 -0800
Subject: sparc-leon: restrict to GDB9

Starting with GDB10, it requires support for std::future<> in the
compiler. Such support has not been available on some architectures
until GCC9 (see PR 64735). I haven't determined the exact list of
affected architectures, so decided to make it a broad dependency: for
GDB10+, you need GCC9+.

Signed-off-by: Alexey Neyman <stilor@att.net>

diff --git a/config/debug/gdb.in b/config/debug/gdb.in
index aa3235e..b0b9d29 100644
--- a/config/debug/gdb.in
+++ b/config/debug/gdb.in
@@ -21,6 +21,13 @@ config GDB_DEP_CXX11
     depends on !CONFIGURE_has_cxx11
     select GDB_REQUIRE_older_than_8_0
 
+# GDB10 and newer require std::future<> which was not implemented on some
+# architectures until GCC9; see GCC PR 64735.
+config GDB_DEP_NO_STD_FUTURE
+    def_bool y
+    depends on !GCC_9_or_later
+    select GDB_REQUIRE_older_than_10_2
+
 # Does GDB need ps_get_thread_area with const qualifier?
 config GDB_CONST_GET_THREAD_AREA
     bool
diff --git a/samples/sparc-leon-linux-uclibc/crosstool.config b/samples/sparc-leon-linux-uclibc/crosstool.config
index 411ea7f..0fd6360 100644
--- a/samples/sparc-leon-linux-uclibc/crosstool.config
+++ b/samples/sparc-leon-linux-uclibc/crosstool.config
@@ -8,7 +8,6 @@ CT_KERNEL_LINUX=y
 CT_LINUX_V_3_10=y
 CT_LIBC_UCLIBC_NG=y
 CT_LIBC_UCLIBC_CONFIG_FILE="${CT_LIB_DIR}/samples/${CT_TARGET}/${CT_LIBC}.config"
-CT_LIBC_UCLIBC_IPV6=y
 CT_GCC_V_6=y
 CT_CC_GCC_EXTRA_CONFIG_ARRAY="--disable-libitm"
 CT_CC_LANG_CXX=y
-- 
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