From 6ce6af9004b98252e1b5a41f52f6ffca7cfdbbda Mon Sep 17 00:00:00 2001
From: v-zhangxiaomeng5 <v-zhangxiaomeng5@xiaomi.com>
Date: Mon, 12 Jan 2026 23:02:58 +0800
Subject: [PATCH] libcxx: supports CXX_MINI_LOCALIZATION

This commit contains changes:
1) define new C++ locale macros CXX_MINI_LOCALIZATION & CXX_NO_LOCALIZATION
2) define a new C++ macro _LIBCPP_HAS_MINI_LOCALIZATION for CXX_MINI_LOCALIZATION
3) update libxx/libcxx/CMakeLists.txt & Make.defs

Signed-off-by: v-zhangxiaomeng5 <v-zhangxiaomeng5@xiaomi.com>
---
 libs/libxx/Kconfig               | 13 ++++++++++++-
 libs/libxx/__config_site         |  4 +++-
 libs/libxx/libcxx/CMakeLists.txt |  2 +-
 libs/libxx/libcxx/Make.defs      |  2 +-
 4 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/libs/libxx/Kconfig b/libs/libxx/Kconfig
index 49206a4e6dd..e7709d5793e 100644
--- a/libs/libxx/Kconfig
+++ b/libs/libxx/Kconfig
@@ -29,7 +29,6 @@ choice
 config LIBCXXTOOLCHAIN
 	bool "Toolchain C++ support"
 	select HAVE_CXXINITIALIZE
-	select LIBC_LOCALE
 	---help---
 		Use Standard C++ library from toolchain.
 
@@ -120,10 +119,22 @@ config CXX_RTTI
 config CXX_WCHAR
 	bool "Enable Wide Character Support"
 
+choice
+	prompt "C++ Locale and Stream select"
+	default CXX_NO_LOCALIZATION
+
+config CXX_NO_LOCALIZATION
+	bool "No Locale and Stream Support"
+
+config CXX_MINI_LOCALIZATION
+	bool "Enable mini Locale and Stream Support"
+
 config CXX_LOCALIZATION
 	bool "Enable Locale and Stream Support"
 	depends on LIBC_LOCALE
 
+endchoice
+
 if UCLIBCXX
 
 config UCLIBCXX_BUFSIZE
diff --git a/libs/libxx/__config_site b/libs/libxx/__config_site
index e7d5116ceb0..7e1477746cd 100644
--- a/libs/libxx/__config_site
+++ b/libs/libxx/__config_site
@@ -27,8 +27,10 @@
 /* #undef _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION */
 /* #undef _LIBCPP_HAS_NO_FILESYSTEM */
 /* #undef _LIBCPP_HAS_NO_RANDOM_DEVICE */
-#ifndef CONFIG_CXX_LOCALIZATION
+#if defined(CONFIG_CXX_NO_LOCALIZATION)
 #  define _LIBCPP_HAS_NO_LOCALIZATION
+#elif defined(CONFIG_CXX_MINI_LOCALIZATION)
+#  define _LIBCPP_HAS_MINI_LOCALIZATION
 #endif
 #ifndef CONFIG_CXX_WCHAR
 #  define _LIBCPP_HAS_NO_WIDE_CHARACTERS
diff --git a/libs/libxx/libcxx/CMakeLists.txt b/libs/libxx/libcxx/CMakeLists.txt
index 8f4b408c1b8..020c1ad05db 100644
--- a/libs/libxx/libcxx/CMakeLists.txt
+++ b/libs/libxx/libcxx/CMakeLists.txt
@@ -119,7 +119,7 @@ if(CONFIG_LIBCXX)
     list(REMOVE_ITEM SRCS ${SRCSTMP})
   endif()
 
-  if(NOT CONFIG_CXX_LOCALIZATION)
+  if(CONFIG_CXX_NO_LOCALIZATION)
     file(
       GLOB
       SRCSTMP
diff --git a/libs/libxx/libcxx/Make.defs b/libs/libxx/libcxx/Make.defs
index 0382d6ba61c..fcbdd9dd854 100644
--- a/libs/libxx/libcxx/Make.defs
+++ b/libs/libxx/libcxx/Make.defs
@@ -89,7 +89,7 @@ ifeq ($(shell [ $(CPP_STD_VER) -le 14 ] && echo true),true)
   CPPSRCS := $(filter-out $(EXCLUDE_FILES), $(CPPSRCS))
 endif
 
-ifeq ($(CONFIG_CXX_LOCALIZATION),)
+ifeq ($(CONFIG_CXX_NO_LOCALIZATION),y)
   LOCALE_CPPSRCS := libcxx/libcxx/src/ios.cpp
   LOCALE_CPPSRCS += libcxx/libcxx/src/ios.instantiations.cpp
   LOCALE_CPPSRCS += libcxx/libcxx/src/iostream.cpp