toolchain change to buildroot gcc

Makefile

@@ -36,13 +36,7 @@ defconfig: prepare
 prepare:
 	@if test ! -e $(TARGET)/buildroot-$(BR_VER); then \
 		wget -c -q $(BR_LINK)/$(BR_VER).tar.gz -O $(BR_FILE); \
-		mkdir -p $(TARGET); tar -xf $(BR_FILE) -C $(TARGET); \
-		if grep "BR2_OPENIPC_SOC_FAMILY=\"k230\"" $(CONFIG) >/dev/null ; then \
-			$(TARGET)/buildroot-$(BR_VER)/support/scripts/apply-patches.sh -s \
-			$(TARGET)/buildroot-$(BR_VER)/ \
-			general/package/canaan_k230_sdk/buildroot_patch/      *.patch;   fi; \
-	fi
-
+		mkdir -p $(TARGET); tar -xf $(BR_FILE) -C $(TARGET); fi
 
 help:
 	@printf "BR-OpenIPC usage:\n \

br-ext-chip-canaan/configs/k230_canmv_01studio_defconfig

@@ -1,22 +1,6 @@
 BR2_riscv=y
 BR2_RISCV_ISA_RVC=y
-BR2_RISCV_ISA_RVV=y
-
-# Toolchain
-BR2_TOOLCHAIN_EXTERNAL=y
-BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
-BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
-BR2_TOOLCHAIN_EXTERNAL_URL="https://kendryte-download.canaan-creative.com/k230/downloads/dl/gcc/Xuantie-900-gcc-linux-6.6.0-glibc-x86_64-V3.0.2-20250410.tar.gz"
-BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="riscv64-unknown-linux-gnu"
-BR2_TOOLCHAIN_EXTERNAL_HEADERS_6_6=y
-BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
-# BR2_TOOLCHAIN_EXTERNAL_INET_RPC is not set
-BR2_TOOLCHAIN_EXTERNAL_CXX=y
-BR2_TOOLCHAIN_EXTERNAL_FORTRAN=y
-BR2_TOOLCHAIN_EXTERNAL_OPENMP=y
-
-# Filesystem
-BR2_TARGET_OPTIMIZATION="-mcpu=c908v -Wno-implicit-function-declaration -Wno-incompatible-pointer-types"
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
 BR2_DL_DIR="$(TOPDIR)/../../dl"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="$(BR2_EXTERNAL)/package/canaan_k230_sdk/canaan_k230_post-image.sh"
 

general/package/canaan_k230_sdk/buildroot_patch/0001-support-gcc-14.patch

@@ -1,54 +0,0 @@
-From 99d0e3e9da9aaf4c4cbf6a4b10d2ad558e65ed61 Mon Sep 17 00:00:00 2001
-From: wangjianxin <wangjianxin@canaan-creative.com>
-Date: Fri, 30 May 2025 11:53:35 +0800
-Subject: [PATCH] support gcc 14
-
----
- toolchain/Config.in                                          | 5 +++++
- .../toolchain-external-custom/Config.in.options              | 4 ++++
- 2 files changed, 9 insertions(+)
- mode change 100644 => 100755 toolchain/Config.in
- mode change 100644 => 100755 toolchain/toolchain-external/toolchain-external-custom/Config.in.options
-
-diff --git a/toolchain/Config.in b/toolchain/Config.in
-old mode 100644
-new mode 100755
-index bd4f80bd..d0483628
---- a/toolchain/Config.in
-+++ b/toolchain/Config.in
-@@ -792,10 +792,15 @@ config BR2_TOOLCHAIN_GCC_AT_LEAST_13
- 	bool
- 	select BR2_TOOLCHAIN_GCC_AT_LEAST_12
- 
-+config BR2_TOOLCHAIN_GCC_AT_LEAST_14
-+	bool
-+	select BR2_TOOLCHAIN_GCC_AT_LEAST_13
-+
- # This order guarantees that the highest version is set, as kconfig
- # stops affecting a value on the first matching default.
- config BR2_TOOLCHAIN_GCC_AT_LEAST
- 	string
-+	default "14"	if BR2_TOOLCHAIN_GCC_AT_LEAST_14
- 	default "13"	if BR2_TOOLCHAIN_GCC_AT_LEAST_13
- 	default "12"	if BR2_TOOLCHAIN_GCC_AT_LEAST_12
- 	default "11"	if BR2_TOOLCHAIN_GCC_AT_LEAST_11
-diff --git a/toolchain/toolchain-external/toolchain-external-custom/Config.in.options b/toolchain/toolchain-external/toolchain-external-custom/Config.in.options
-old mode 100644
-new mode 100755
-index 5554d567..838ac79a
---- a/toolchain/toolchain-external/toolchain-external-custom/Config.in.options
-+++ b/toolchain/toolchain-external/toolchain-external-custom/Config.in.options
-@@ -46,6 +46,10 @@ choice
- 	  Set to the gcc version that is used by your external
- 	  toolchain.
- 
-+config BR2_TOOLCHAIN_EXTERNAL_GCC_14
-+	bool "14.x"
-+	select BR2_TOOLCHAIN_GCC_AT_LEAST_14
-+
- config BR2_TOOLCHAIN_EXTERNAL_GCC_13
- 	bool "13.x"
- 	select BR2_TOOLCHAIN_GCC_AT_LEAST_13
--- 
-2.46.0
-