From a0a388289747744596403d7404c07d743b88e631 Mon Sep 17 00:00:00 2001
From: Sudeep Mohanty <sudeep.mohanty@espressif.com>
Date: Fri, 17 Apr 2026 08:43:05 +0200
Subject: [PATCH] fix(esp_libc/kconfig): exclude IDF_TARGET_LINUX from LibC
 menu
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On the Linux target the host's C library is used directly; none of the
LibC menu options apply. Mark the entire "LibC" menu as `depends on
!IDF_TARGET_LINUX` so its symbols (LIBC_NEWLIB, LIBC_PICOLIBC, …) stay
undefined on Linux builds.

Also gate the picolibc-specific include in components/console/linenoise/
linenoise.c under `!CONFIG_IDF_TARGET_LINUX` so the file does not try to
pull <stdio-bufio.h> on the host even if CONFIG_LIBC_PICOLIBC is set by
some other build path.
---
 components/console/linenoise/linenoise.c | 2 ++
 components/esp_libc/Kconfig              | 1 +
 2 files changed, 3 insertions(+)

diff --git a/components/console/linenoise/linenoise.c b/components/console/linenoise/linenoise.c
index 64fcf23a12d..e0c0bc21657 100644
--- a/components/console/linenoise/linenoise.c
+++ b/components/console/linenoise/linenoise.c
@@ -124,9 +124,11 @@
 #include <sys/param.h>
 #include <assert.h>
 #include "linenoise.h"
+#if !CONFIG_IDF_TARGET_LINUX
 #if CONFIG_LIBC_PICOLIBC
 #include <stdio-bufio.h>
 #endif
+#endif // !CONFIG_IDF_TARGET_LINUX
 
 #if CONFIG_LIBC_PICOLIBC && !CONFIG_LIBC_PICOLIBC_NEWLIB_COMPATIBILITY
 __thread FILE *linenoise_stdin;
diff --git a/components/esp_libc/Kconfig b/components/esp_libc/Kconfig
index 6c7447c9d60..f49eee7c104 100644
--- a/components/esp_libc/Kconfig
+++ b/components/esp_libc/Kconfig
@@ -1,4 +1,5 @@
 menu "LibC"
+    depends on !IDF_TARGET_LINUX
 
     choice LIBC
         prompt "LibC to build application with"