diff --git a/drivers/console/efi_console.c b/drivers/console/efi_console.c
index 245510dbca5..ac4ff17b39f 100644
--- a/drivers/console/efi_console.c
+++ b/drivers/console/efi_console.c
@@ -17,6 +17,7 @@
 #include <zephyr/init.h>
 #include <zephyr/sys/printk.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 
 extern int efi_console_putchar(int c);
 
@@ -39,10 +40,6 @@ static int console_out(int c)
 
 #endif
 
-#if defined(CONFIG_STDOUT_CONSOLE)
-extern void __stdout_hook_install(int (*hook)(int));
-#endif
-
 /**
  * @brief Install printk/stdout hook for EFI console output
  */
diff --git a/drivers/console/ipm_console.c b/drivers/console/ipm_console.c
index aed3e25eb0b..9c9f51a8fff 100644
--- a/drivers/console/ipm_console.c
+++ b/drivers/console/ipm_console.c
@@ -9,6 +9,7 @@
 #include <zephyr/init.h>
 #include <zephyr/drivers/ipm.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(ipm_console, CONFIG_IPM_LOG_LEVEL);
@@ -42,10 +43,6 @@ static int console_out(int c)
 	return c;
 }
 
-#if defined(CONFIG_STDOUT_CONSOLE)
-extern void __stdout_hook_install(int (*hook)(int));
-#endif
-
 /* Install printk/stdout hooks */
 static void ipm_console_hook_install(void)
 {
diff --git a/drivers/console/ipm_console_sender.c b/drivers/console/ipm_console_sender.c
index a0888f1c779..03e261ec5f1 100644
--- a/drivers/console/ipm_console_sender.c
+++ b/drivers/console/ipm_console_sender.c
@@ -11,6 +11,7 @@
 #include <zephyr/kernel.h>
 #include <zephyr/sys/printk.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 #include <zephyr/drivers/ipm.h>
 #include <zephyr/drivers/console/ipm_console.h>
 
@@ -31,8 +32,6 @@ static int consoleOut(int character)
 	return character;
 }
 
-extern void __stdout_hook_install(int (*fn)(int));
-
 int ipm_console_sender_init(const struct device *d)
 {
 	const struct ipm_console_sender_config_info *config_info;
diff --git a/drivers/console/jailhouse_debug_console.c b/drivers/console/jailhouse_debug_console.c
index 1a9b514bf9b..bf31a530001 100644
--- a/drivers/console/jailhouse_debug_console.c
+++ b/drivers/console/jailhouse_debug_console.c
@@ -6,6 +6,7 @@
 #include <zephyr/kernel.h>
 #include <zephyr/sys/printk.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 #include <zephyr/device.h>
 #include <zephyr/init.h>
 
@@ -26,10 +27,6 @@ static int console_out(int c)
 }
 #endif
 
-#if defined(CONFIG_STDOUT_CONSOLE)
-extern void __stdout_hook_install(int (*hook)(int));
-#endif
-
 /**
  * @brief Initialize the console/debug port
  * @return 0 if successful, otherwise failed.
diff --git a/drivers/console/posix_arch_console.c b/drivers/console/posix_arch_console.c
index a118a8bb161..7d2dab02faa 100644
--- a/drivers/console/posix_arch_console.c
+++ b/drivers/console/posix_arch_console.c
@@ -8,6 +8,7 @@
 #include <zephyr/init.h>
 #include <zephyr/arch/posix/posix_trace.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 
 #define _STDOUT_BUF_SIZE 256
 static char stdout_buff[_STDOUT_BUF_SIZE];
@@ -55,7 +56,6 @@ static int posix_arch_console_init(void)
 	__printk_hook_install(print_char);
 #endif
 #ifdef CONFIG_STDOUT_CONSOLE
-	extern void __stdout_hook_install(int (*fn)(int));
 	__stdout_hook_install(print_char);
 #endif
 	return 0;
diff --git a/drivers/console/ram_console.c b/drivers/console/ram_console.c
index b2762a9b495..9544544fb5b 100644
--- a/drivers/console/ram_console.c
+++ b/drivers/console/ram_console.c
@@ -11,6 +11,7 @@
 #include <zephyr/kernel.h>
 #include <zephyr/sys/printk.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 #include <zephyr/device.h>
 #include <zephyr/init.h>
 #include <zephyr/linker/devicetree_regions.h>
@@ -28,8 +29,6 @@
 #define RAM_CONSOLE_BUF_ATTR
 #endif
 
-extern void __stdout_hook_install(int (*fn)(int));
-
 char ram_console_buf[CONFIG_RAM_CONSOLE_BUFFER_SIZE] RAM_CONSOLE_BUF_ATTR;
 char *ram_console;
 static int pos;
diff --git a/drivers/console/rtt_console.c b/drivers/console/rtt_console.c
index 8baf05d23e7..a5cd7bb051a 100644
--- a/drivers/console/rtt_console.c
+++ b/drivers/console/rtt_console.c
@@ -12,12 +12,11 @@
 #include <zephyr/kernel.h>
 #include <zephyr/sys/printk.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 #include <zephyr/device.h>
 #include <zephyr/init.h>
 #include <SEGGER_RTT.h>
 
-extern void __stdout_hook_install(int (*fn)(int));
-
 static bool host_present;
 
 /** @brief Wait for fixed period.
diff --git a/drivers/console/semihost_console.c b/drivers/console/semihost_console.c
index 6c7655189c0..3f500b3e56b 100644
--- a/drivers/console/semihost_console.c
+++ b/drivers/console/semihost_console.c
@@ -7,8 +7,7 @@
 #include <zephyr/device.h>
 #include <zephyr/init.h>
 #include <zephyr/arch/common/semihost.h>
-
-extern void __stdout_hook_install(int (*fn)(int));
+#include <zephyr/sys/libc-hooks.h>
 
 int arch_printk_char_out(int _c)
 {
@@ -18,7 +17,6 @@ int arch_printk_char_out(int _c)
 
 static int semihost_console_init(void)
 {
-
 	/*
 	 * The printk output callback is arch_printk_char_out by default and
 	 * is installed at link time. That makes printk() usable very early.
diff --git a/drivers/console/uart_console.c b/drivers/console/uart_console.c
index 43d65d40370..8d776ff7aee 100644
--- a/drivers/console/uart_console.c
+++ b/drivers/console/uart_console.c
@@ -32,6 +32,7 @@
 #include <zephyr/sys/atomic.h>
 #include <zephyr/sys/printk.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 #include <zephyr/pm/device_runtime.h>
 #ifdef CONFIG_UART_CONSOLE_MCUMGR
 #include <zephyr/mgmt/mcumgr/transport/serial.h>
@@ -111,10 +112,6 @@ static int console_out(int c)
 
 #endif
 
-#if defined(CONFIG_STDOUT_CONSOLE)
-extern void __stdout_hook_install(int (*hook)(int c));
-#endif
-
 #if defined(CONFIG_CONSOLE_HANDLER)
 static struct k_fifo *avail_queue;
 static struct k_fifo *lines_queue;
diff --git a/drivers/console/winstream_console.c b/drivers/console/winstream_console.c
index ac018b619ac..79794068ce8 100644
--- a/drivers/console/winstream_console.c
+++ b/drivers/console/winstream_console.c
@@ -8,6 +8,7 @@
 #include <zephyr/kernel.h>
 #include <zephyr/sys/winstream.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 #include <zephyr/devicetree.h>
 #include <zephyr/cache.h>
 
@@ -47,10 +48,6 @@ int arch_printk_char_out(int c)
 	return 0;
 }
 
-#if defined(CONFIG_STDOUT_CONSOLE)
-extern void __stdout_hook_install(int (*hook)(int));
-#endif
-
 static void winstream_console_hook_install(void)
 {
 #if defined(CONFIG_STDOUT_CONSOLE)
diff --git a/drivers/console/xtensa_sim_console.c b/drivers/console/xtensa_sim_console.c
index a7a8513ea37..9347ed2647e 100644
--- a/drivers/console/xtensa_sim_console.c
+++ b/drivers/console/xtensa_sim_console.c
@@ -7,6 +7,7 @@
 #include <zephyr/device.h>
 #include <zephyr/init.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 
 #if defined(CONFIG_PRINTK) || defined(CONFIG_STDOUT_CONSOLE)
 /**
@@ -34,10 +35,6 @@ int arch_printk_char_out(int c)
 }
 #endif
 
-#if defined(CONFIG_STDOUT_CONSOLE)
-extern void __stdout_hook_install(int (*hook)(int));
-#endif
-
 /**
  * @brief Install printk/stdout hook for Xtensa Simulator console output
  */
diff --git a/drivers/serial/uart_hvc_xen.c b/drivers/serial/uart_hvc_xen.c
index 8fa4a06ca88..800603fc258 100644
--- a/drivers/serial/uart_hvc_xen.c
+++ b/drivers/serial/uart_hvc_xen.c
@@ -18,6 +18,7 @@
 #include <zephyr/kernel.h>
 #include <zephyr/sys/device_mmio.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(uart_hvc_xen, CONFIG_UART_LOG_LEVEL);
@@ -268,8 +269,6 @@ DEVICE_DT_DEFINE(DT_NODELABEL(xen_hvc), xen_console_init, NULL, &xen_hvc_data,
 		&xen_hvc_api);
 
 #ifdef CONFIG_XEN_EARLY_CONSOLEIO
-extern void __stdout_hook_install(int (*fn)(int));
-
 int xen_consoleio_putc(int c)
 {
 	char symbol = (char) c;
diff --git a/include/zephyr/sys/libc-hooks.h b/include/zephyr/sys/libc-hooks.h
index e737fc6872d..5455bdf29a7 100644
--- a/include/zephyr/sys/libc-hooks.h
+++ b/include/zephyr/sys/libc-hooks.h
@@ -44,6 +44,8 @@ __syscall size_t zephyr_fwrite(const void *ZRESTRICT ptr, size_t size,
 
 #endif /* CONFIG_NEWLIB_LIBC */
 
+void __stdout_hook_install(int (*hook)(int));
+
 #ifdef CONFIG_USERSPACE
 #ifdef CONFIG_COMMON_LIBC_MALLOC
 
diff --git a/subsys/bluetooth/host/monitor.c b/subsys/bluetooth/host/monitor.c
index abc84a7837c..980d91410f5 100644
--- a/subsys/bluetooth/host/monitor.c
+++ b/subsys/bluetooth/host/monitor.c
@@ -17,6 +17,7 @@
 #include <zephyr/drivers/uart_pipe.h>
 #include <zephyr/sys/byteorder.h>
 #include <zephyr/sys/printk-hooks.h>
+#include <zephyr/sys/libc-hooks.h>
 #include <zephyr/drivers/uart.h>
 
 #include <zephyr/logging/log_backend.h>
@@ -260,8 +261,6 @@ static int monitor_console_out(int c)
 
 	return c;
 }
-
-extern void __stdout_hook_install(int (*fn)(int));
 #endif /* !CONFIG_UART_CONSOLE && !CONFIG_RTT_CONSOLE && !CONFIG_LOG_PRINTK */
 
 #ifndef CONFIG_LOG_MODE_MINIMAL