diff --git a/cmake/zephyr/Kconfig b/cmake/zephyr/Kconfig
index 38a842c6..bbd66767 100644
--- a/cmake/zephyr/Kconfig
+++ b/cmake/zephyr/Kconfig
@@ -7,3 +7,9 @@ config TOOLCHAIN_ZEPHYR_0_15
 config TOOLCHAIN_ZEPHYR_SUPPORTS_THREAD_LOCAL_STORAGE
 	def_bool y
 	select TOOLCHAIN_SUPPORTS_THREAD_LOCAL_STORAGE
+
+config PICOLIBC_SUPPORTED
+	def_bool y
+	depends on "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "zephyr"
+	help
+	  Zephyr SDK >=0.16 always supports Picolibc for C and C++ development.
diff --git a/cmake/zephyr/generic.cmake b/cmake/zephyr/generic.cmake
index 73b17c76..2c914d8e 100644
--- a/cmake/zephyr/generic.cmake
+++ b/cmake/zephyr/generic.cmake
@@ -30,3 +30,4 @@ endif()
 set(CROSS_COMPILE ${one_toolchain_root}/${CROSS_COMPILE_TARGET}/bin/${CROSS_COMPILE_TARGET}-)
 set(SYSROOT_DIR   ${one_toolchain_root}/${SYSROOT_TARGET}/${SYSROOT_TARGET})
 set(TOOLCHAIN_HAS_NEWLIB ON CACHE BOOL "True if toolchain supports newlib")
+set(TOOLCHAIN_HAS_PICOLIBC ON CACHE BOOL "True if toolchain supports picolibc")