Esp32 build fixes (#2836)

Further to #2819 the size mainly seems to relate to two things:

1. WPA3 support is enabled by default, but probably isn't necessary for most applications (could be wrong).
2. More debug stuff in IDF 5.2; release builds are comparable to IDF 4.4.

## Bug fixes

- esp32 timer definitions missing in RELEASE build
- sdkconfig definitions not picked up

## Size fixes

**Disable WPA3 by default**

This is also enabled by default in IDF 4.4 but can always be re-enabled if required.
It adds quite a lot to the image size.

**Don't pull in stdio code from newlib**

Sming doesn't use newlib stdio streams


## Others

- Revise CI tool `scanlog.py` to include missing builds (HostTests)
- Make `checksdk` a pre-requisite

Sming/Arch/Esp32/Components/esp32/component.mk

@@ -66,6 +66,15 @@ endif
 ESP32_COMPONENT_PATH := $(COMPONENT_PATH)
 SDK_DEFAULT_PATH := $(ESP32_COMPONENT_PATH)/sdk
 
+SDK_PROJECT_PATH := $(ESP32_COMPONENT_PATH)/project/$(ESP_VARIANT)/$(BUILD_TYPE)
+SDK_CONFIG_DEFAULTS := $(SDK_PROJECT_PATH)/sdkconfig.defaults
+
+SDKCONFIG_MAKEFILE := $(SDK_PROJECT_PATH)/sdkconfig
+ifeq ($(MAKE_DOCS),)
+-include $(SDKCONFIG_MAKEFILE)
+endif
+export SDKCONFIG_MAKEFILE  # sub-makes (like bootloader) will reuse this path
+
 ifdef IDF_VERSION_52
 GLOBAL_CFLAGS += \
 	-DSOC_XTAL_FREQ_MHZ=CONFIG_XTAL_FREQ \
@@ -405,15 +414,6 @@ EXTRA_LDFLAGS += \
 	-T sections.ld
 endif
 
-SDK_PROJECT_PATH := $(ESP32_COMPONENT_PATH)/project/$(ESP_VARIANT)/$(BUILD_TYPE)
-SDK_CONFIG_DEFAULTS := $(SDK_PROJECT_PATH)/sdkconfig.defaults
-
-SDKCONFIG_MAKEFILE := $(SDK_PROJECT_PATH)/sdkconfig
-ifeq ($(MAKE_DOCS),)
--include $(SDKCONFIG_MAKEFILE)
-endif
-export SDKCONFIG_MAKEFILE  # sub-makes (like bootloader) will reuse this path
-
 FLASH_BOOT_LOADER       := $(SDK_BUILD_BASE)/bootloader/bootloader.bin
 FLASH_BOOT_CHUNKS		:= $(CONFIG_BOOTLOADER_OFFSET_IN_FLASH)=$(FLASH_BOOT_LOADER)
 

Sming/Arch/Esp32/Components/esp32/sdk/config/common

@@ -23,6 +23,11 @@ CONFIG_ETH_USE_SPI_ETHERNET=y
 CONFIG_ETH_SPI_ETHERNET_W5500=y
 CONFIG_ETH_SPI_ETHERNET_DM9051=y
 
+# WiFi
+CONFIG_ESP_WIFI_ENABLE_WPA3_SAE=n
+CONFIG_ESP_WIFI_ENABLE_WPA3_OWE_STA=n
+CONFIG_ESP_WIFI_SOFTAP_SAW_SUPPORT=n
+
 # Bluetooth
 CONFIG_BT_ENABLED=y
 CONFIG_BT_BLUEDROID_ENABLED=n

Sming/Arch/Esp32/Components/esp32/sdk/esp_system.mk

@@ -16,3 +16,6 @@ endif
 # linker will ignore panic_highint_hdl.S as it has no other files depending on any
 # symbols in it.
 SDK_UNDEF_SYMBOLS += ld_include_panic_highint_hdl
+
+# IDF 5.2
+SDK_WRAP_SYMBOLS += esp_newlib_init_global_stdio

Sming/Arch/Esp32/Components/esp32/src/startup.cpp

@@ -71,6 +71,10 @@ void main(void*)
 
 } // namespace
 
+extern "C" void __wrap_esp_newlib_init_global_stdio(const char*)
+{
+}
+
 extern void sming_create_task(TaskFunction_t);
 
 extern "C" void app_main(void)

Sming/Arch/Esp32/Components/esp32/src/system.cpp

@@ -1,5 +1,6 @@
 #include <esp_system.h>
 #include <sys/time.h>
+#include <esp_timer.h>
 #include <esp_task_wdt.h>
 #include <sming_attr.h>
 #include <string.h>

Tools/ci/scanlog.py

@@ -87,6 +87,8 @@ def __next__(self):
 
 
 def scan_log(filename: str):
+    BUILD_PREFIX = 'Building /home/runner/'
+    IGNORE_PREFIX = ['projects/', 'work/Sming/Sming/Sming/']
     state = State.searching
     table = Table(os.path.basename(filename))
     target = None
@@ -97,10 +99,15 @@ def scan_log(filename: str):
         dtstr, _, line = line.strip().partition(' ')
         if not dtstr:
             continue
-        _, sep, c = line.partition('** Building ')
-        if sep:
-            target, _, _ = c.partition(' ')
-            target = target.removeprefix('/home/runner/projects/')
+        if state == State.searching:
+            if not line.startswith(BUILD_PREFIX):
+                continue
+            if 'clib-App' not in line:
+                continue
+            c = line[len(BUILD_PREFIX):]
+            for prefix in IGNORE_PREFIX:
+                c = c.removeprefix(prefix)
+            target, _, _ = c.partition('/out/')
             row = {
                 'target': target
             }
@@ -121,7 +128,8 @@ def scan_log(filename: str):
             elif ' : ' in line:
                 k, v = line.split(':')
             else:
-                table.append(row)
+                if len(row) > 1: # Not just target (discard host builds)
+                    table.append(row)
                 row = None
                 state = State.searching
                 continue