improve cmake warning flags, fix various warnings in examples

7 files changed, 10 insertions, 8 deletions

diff --git a/examples/device/cdc_uac2/src/common.h b/examples/device/cdc_uac2/src/common.h
index f281024c7..ff8b7a953 100644
--- a/examples/device/cdc_uac2/src/common.h
+++ b/examples/device/cdc_uac2/src/common.h
@@ -31,4 +31,7 @@ enum
   VOLUME_CTRL_SILENCE = 0x8000,
 };
 
+void led_blinking_task(void);
+void audio_task(void);
+
 #endif
diff --git a/examples/device/cdc_uac2/src/main.c b/examples/device/cdc_uac2/src/main.c
index bc87f6e3c..22c462be7 100644
--- a/examples/device/cdc_uac2/src/main.c
+++ b/examples/device/cdc_uac2/src/main.c
@@ -38,9 +38,6 @@ extern uint32_t blink_interval_ms;
 #include "pico/stdlib.h"
 #endif
 
-void led_blinking_task(void);
-void audio_task(void);
-
 /*------------- MAIN -------------*/
 int main(void)
 {
diff --git a/examples/device/net_lwip_webserver/src/main.c b/examples/device/net_lwip_webserver/src/main.c
index dd9f213ae..867cf2812 100644
--- a/examples/device/net_lwip_webserver/src/main.c
+++ b/examples/device/net_lwip_webserver/src/main.c
@@ -58,6 +58,7 @@ try changing the first byte of tud_network_mac_address[] below from 0x02 to 0x00
 #include "lwip/ethip6.h"
 #include "lwip/init.h"
 #include "lwip/timeouts.h"
+#include "lwip/sys.h"
 
 #ifdef INCLUDE_IPERF
   #include "lwip/apps/lwiperf.h"
@@ -172,7 +173,7 @@ static void init_lwip(void) {
 }
 
 /* handle any DNS requests from dns-server */
-bool dns_query_proc(const char *name, ip4_addr_t *addr) {
+static bool dns_query_proc(const char *name, ip4_addr_t *addr) {
   if (0 == strcmp(name, "tiny.usb")) {
     *addr = ipaddr;
     return true;
diff --git a/examples/device/usbtmc/src/main.c b/examples/device/usbtmc/src/main.c
index f78cce91f..5cbbb85ef 100644
--- a/examples/device/usbtmc/src/main.c
+++ b/examples/device/usbtmc/src/main.c
@@ -29,6 +29,7 @@
 
 #include "bsp/board_api.h"
 #include "tusb.h"
+#include "main.h"
 #include "usbtmc_app.h"
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF PROTYPES
diff --git a/examples/device/usbtmc/src/usbtmc_app.c b/examples/device/usbtmc/src/usbtmc_app.c
index e738f1008..4c3724ac4 100644
--- a/examples/device/usbtmc/src/usbtmc_app.c
+++ b/examples/device/usbtmc/src/usbtmc_app.c
@@ -28,6 +28,7 @@
 #include "tusb.h"
 #include "bsp/board_api.h"
 #include "main.h"
+#include "usbtmc_app.h"
 
 #if (CFG_TUD_USBTMC_ENABLE_488)
 static usbtmc_response_capabilities_488_t const
diff --git a/examples/device/video_capture_2ch/src/main.c b/examples/device/video_capture_2ch/src/main.c
index f56738f67..a63efa82d 100644
--- a/examples/device/video_capture_2ch/src/main.c
+++ b/examples/device/video_capture_2ch/src/main.c
@@ -180,7 +180,7 @@ static void fill_color_bar(uint8_t* buffer, unsigned start_position) {
 }
 #endif
 
-size_t get_framebuf(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, size_t fnum, void **fb) {
+static size_t get_framebuf(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, size_t fnum, void **fb) {
   uint32_t idx = ctl_idx + stm_idx;
 
   if (idx == 0) {
@@ -205,8 +205,7 @@ size_t get_framebuf(uint_fast8_t ctl_idx, uint_fast8_t stm_idx, size_t fnum, voi
 //--------------------------------------------------------------------+
 //
 //--------------------------------------------------------------------+
-
-void video_send_frame(uint_fast8_t ctl_idx, uint_fast8_t stm_idx) {
+static void video_send_frame(uint_fast8_t ctl_idx, uint_fast8_t stm_idx) {
   static unsigned start_ms[CFG_TUD_VIDEO_STREAMING] = {0, };
   static unsigned already_sent = 0;
 
diff --git a/examples/device/webusb_serial/src/main.c b/examples/device/webusb_serial/src/main.c
index 4a724f45e..0c2acd94e 100644
--- a/examples/device/webusb_serial/src/main.c
+++ b/examples/device/webusb_serial/src/main.c
@@ -107,7 +107,7 @@ int main(void) {
 }
 
 // send characters to both CDC and WebUSB
-void echo_all(const uint8_t buf[], uint32_t count) {
+static void echo_all(const uint8_t buf[], uint32_t count) {
   // echo to web serial
   if (web_serial_connected) {
     tud_vendor_write(buf, count);