Merge branch 'bugfix/smtp_strict_prototypes_fix' into 'master'

Fixes for CI regresions

See merge request espressif/esp-idf!7511

examples/protocols/smtp_client/main/smtp_client_example_main.c

@@ -497,7 +497,7 @@ exit:
     vTaskDelete(NULL);
 }
 
-void app_main()
+void app_main(void)
 {
     ESP_ERROR_CHECK(nvs_flash_init());
     ESP_ERROR_CHECK(esp_netif_init());

tools/ci/build_examples_cmake.sh

@@ -44,6 +44,9 @@ if [ -z ${CI_NODE_INDEX} ]; then
 fi
 
 
+export EXTRA_CFLAGS="${PEDANTIC_CFLAGS:-}"
+export EXTRA_CXXFLAGS="${PEDANTIC_CXXFLAGS:-}"
+
 set -o nounset # Exit if variable not set.
 
 export REALPATH=realpath