Reduces binary size for esp32, s2 and c3 (#47)

on commit deacf43

sdkconfig modifications to build libraries with compile optimization to size (-Os)
keep all the bootloaders with -Os and no boot messages
changes max number of sockets from 10 to 16
disables LWIP "Experimental PPP and SLIP" because it adds about 60K to the binary size and it's not used in Arduino
on commit a133257

sets WIFI LWIP to try first to allocate from SPIRAM on esp32 (this is esp32s2 default configuration)
defines SPIRAM_MALLOC_ALWAYSINTERNAL to 4096 bytes on esp32 (same as default for esp32s2)
disables SPIRAM_MALLOC_RESERVE_INTERNAL on both esp32 and esp32s2 to release more RAM to heap
Related PRs in Arduino-ESP32:
espressif/arduino-esp32#5789
espressif/arduino-esp32#5791

Related issue:
espressif/arduino-esp32#5699
espressif/arduino-esp32#5474
espressif/arduino-esp32#5630
espressif/arduino-esp32#5751

sdkconfig.esp32

@@ -222,8 +222,8 @@ CONFIG_ARDUHAL_PARTITION_SCHEME="default"
 # Compiler options
 #
 # CONFIG_COMPILER_OPTIMIZATION_DEFAULT is not set
-# CONFIG_COMPILER_OPTIMIZATION_SIZE is not set
-CONFIG_COMPILER_OPTIMIZATION_PERF=y
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
+# CONFIG_COMPILER_OPTIMIZATION_PERF is not set
 # CONFIG_COMPILER_OPTIMIZATION_NONE is not set
 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_ENABLE=y
 # CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT is not set
@@ -491,9 +491,9 @@ CONFIG_SPIRAM=y
 # CONFIG_SPIRAM_USE_MEMMAP is not set
 # CONFIG_SPIRAM_USE_CAPS_ALLOC is not set
 CONFIG_SPIRAM_USE_MALLOC=y
-CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=16384
-# CONFIG_SPIRAM_TRY_ALLOCATE_WIFI_LWIP is not set
-CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL=32768
+CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=4096
+CONFIG_SPIRAM_TRY_ALLOCATE_WIFI_LWIP=y
+CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL=0
 # CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY is not set
 # CONFIG_SPIRAM_ALLOW_NOINIT_SEG_EXTERNAL_MEMORY is not set
 CONFIG_SPIRAM_CACHE_WORKAROUND=y
@@ -1007,7 +1007,7 @@ CONFIG_LWIP_DNS_SUPPORT_MDNS_QUERIES=y
 # CONFIG_LWIP_L2_TO_L3_COPY is not set
 # CONFIG_LWIP_IRAM_OPTIMIZATION is not set
 CONFIG_LWIP_TIMERS_ONDEMAND=y
-CONFIG_LWIP_MAX_SOCKETS=10
+CONFIG_LWIP_MAX_SOCKETS=16
 # CONFIG_LWIP_USE_ONLY_LWIP_SELECT is not set
 # CONFIG_LWIP_SO_LINGER is not set
 CONFIG_LWIP_SO_REUSE=y
@@ -1066,6 +1066,7 @@ CONFIG_LWIP_TCP_QUEUE_OOSEQ=y
 CONFIG_LWIP_TCP_OVERSIZE_MSS=y
 # CONFIG_LWIP_TCP_OVERSIZE_QUARTER_MSS is not set
 # CONFIG_LWIP_TCP_OVERSIZE_DISABLE is not set
+# CONFIG_LWIP_WND_SCALE is not set
 CONFIG_LWIP_TCP_RTO_TIME=3000
 # end of TCP
 
@@ -1089,17 +1090,9 @@ CONFIG_LWIP_TCPIP_TASK_STACK_SIZE=2560
 CONFIG_LWIP_TCPIP_TASK_AFFINITY_CPU0=y
 # CONFIG_LWIP_TCPIP_TASK_AFFINITY_CPU1 is not set
 CONFIG_LWIP_TCPIP_TASK_AFFINITY=0x0
-CONFIG_LWIP_PPP_SUPPORT=y
-CONFIG_LWIP_PPP_ENABLE_IPV6=y
+# CONFIG_LWIP_PPP_SUPPORT is not set
 CONFIG_LWIP_IPV6_MEMP_NUM_ND6_QUEUE=3
 CONFIG_LWIP_IPV6_ND6_NUM_NEIGHBORS=5
-# CONFIG_LWIP_PPP_NOTIFY_PHASE_SUPPORT is not set
-CONFIG_LWIP_PPP_PAP_SUPPORT=y
-CONFIG_LWIP_PPP_CHAP_SUPPORT=y
-CONFIG_LWIP_PPP_MSCHAP_SUPPORT=y
-CONFIG_LWIP_PPP_MPPE_SUPPORT=y
-# CONFIG_LWIP_ENABLE_LCP_ECHO is not set
-# CONFIG_LWIP_PPP_DEBUG_ON is not set
 # CONFIG_LWIP_SLIP_SUPPORT is not set
 
 #
@@ -1579,7 +1572,7 @@ CONFIG_MONITOR_BAUD_115200B=y
 CONFIG_MONITOR_BAUD_OTHER_VAL=115200
 CONFIG_MONITOR_BAUD=115200
 # CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG is not set
-# CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE is not set
+CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE=y
 CONFIG_OPTIMIZATION_ASSERTIONS_ENABLED=y
 # CONFIG_OPTIMIZATION_ASSERTIONS_SILENT is not set
 # CONFIG_OPTIMIZATION_ASSERTIONS_DISABLED is not set
@@ -1649,7 +1642,7 @@ CONFIG_SMP_ENABLE=y
 CONFIG_BLE_ESTABLISH_LINK_CONNECTION_TIMEOUT=30
 CONFIG_ADC2_DISABLE_DAC=y
 CONFIG_SPIRAM_SUPPORT=y
-# CONFIG_WIFI_LWIP_ALLOCATION_FROM_SPIRAM_FIRST is not set
+CONFIG_WIFI_LWIP_ALLOCATION_FROM_SPIRAM_FIRST=y
 CONFIG_TRACEMEM_RESERVE_DRAM=0x0
 CONFIG_ULP_COPROC_ENABLED=y
 CONFIG_ULP_COPROC_RESERVE_MEM=512
@@ -1744,13 +1737,7 @@ CONFIG_TCPIP_TASK_STACK_SIZE=2560
 CONFIG_TCPIP_TASK_AFFINITY_CPU0=y
 # CONFIG_TCPIP_TASK_AFFINITY_CPU1 is not set
 CONFIG_TCPIP_TASK_AFFINITY=0x0
-CONFIG_PPP_SUPPORT=y
-# CONFIG_PPP_NOTIFY_PHASE_SUPPORT is not set
-CONFIG_PPP_PAP_SUPPORT=y
-CONFIG_PPP_CHAP_SUPPORT=y
-CONFIG_PPP_MSCHAP_SUPPORT=y
-CONFIG_PPP_MPPE_SUPPORT=y
-# CONFIG_PPP_DEBUG_ON is not set
+# CONFIG_PPP_SUPPORT is not set
 CONFIG_ESP32_PTHREAD_TASK_PRIO_DEFAULT=5
 CONFIG_ESP32_PTHREAD_TASK_STACK_SIZE_DEFAULT=2048
 CONFIG_ESP32_PTHREAD_STACK_MIN=768

sdkconfig.esp32c3

@@ -43,13 +43,13 @@ CONFIG_BOOTLOADER_COMPILER_OPTIMIZATION_SIZE=y
 # CONFIG_BOOTLOADER_COMPILER_OPTIMIZATION_DEBUG is not set
 # CONFIG_BOOTLOADER_COMPILER_OPTIMIZATION_PERF is not set
 # CONFIG_BOOTLOADER_COMPILER_OPTIMIZATION_NONE is not set
-# CONFIG_BOOTLOADER_LOG_LEVEL_NONE is not set
+CONFIG_BOOTLOADER_LOG_LEVEL_NONE=y
 # CONFIG_BOOTLOADER_LOG_LEVEL_ERROR is not set
 # CONFIG_BOOTLOADER_LOG_LEVEL_WARN is not set
-CONFIG_BOOTLOADER_LOG_LEVEL_INFO=y
+# CONFIG_BOOTLOADER_LOG_LEVEL_INFO is not set
 # CONFIG_BOOTLOADER_LOG_LEVEL_DEBUG is not set
 # CONFIG_BOOTLOADER_LOG_LEVEL_VERBOSE is not set
-CONFIG_BOOTLOADER_LOG_LEVEL=3
+CONFIG_BOOTLOADER_LOG_LEVEL=0
 CONFIG_BOOTLOADER_VDDSDIO_BOOST_1_9V=y
 # CONFIG_BOOTLOADER_FACTORY_RESET is not set
 # CONFIG_BOOTLOADER_APP_TEST is not set
@@ -192,8 +192,8 @@ CONFIG_ARDUHAL_PARTITION_SCHEME="default"
 #
 # Compiler options
 #
-CONFIG_COMPILER_OPTIMIZATION_DEFAULT=y
-# CONFIG_COMPILER_OPTIMIZATION_SIZE is not set
+# CONFIG_COMPILER_OPTIMIZATION_DEFAULT is not set
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
 # CONFIG_COMPILER_OPTIMIZATION_PERF is not set
 # CONFIG_COMPILER_OPTIMIZATION_NONE is not set
 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_ENABLE=y
@@ -951,7 +951,6 @@ CONFIG_FREERTOS_TIMER_QUEUE_LENGTH=10
 CONFIG_FREERTOS_QUEUE_REGISTRY_SIZE=0
 # CONFIG_FREERTOS_USE_TRACE_FACILITY is not set
 # CONFIG_FREERTOS_GENERATE_RUN_TIME_STATS is not set
-CONFIG_FREERTOS_TASK_FUNCTION_WRAPPER=y
 CONFIG_FREERTOS_CHECK_MUTEX_GIVEN_BY_OWNER=y
 # CONFIG_FREERTOS_CHECK_PORT_CRITICAL_COMPLIANCE is not set
 # CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH is not set
@@ -1025,7 +1024,7 @@ CONFIG_LWIP_DNS_SUPPORT_MDNS_QUERIES=y
 # CONFIG_LWIP_L2_TO_L3_COPY is not set
 # CONFIG_LWIP_IRAM_OPTIMIZATION is not set
 CONFIG_LWIP_TIMERS_ONDEMAND=y
-CONFIG_LWIP_MAX_SOCKETS=10
+CONFIG_LWIP_MAX_SOCKETS=16
 # CONFIG_LWIP_USE_ONLY_LWIP_SELECT is not set
 # CONFIG_LWIP_SO_LINGER is not set
 CONFIG_LWIP_SO_REUSE=y
@@ -1520,13 +1519,13 @@ CONFIG_LITTLEFS_MTIME_USE_SECONDS=y
 
 # Deprecated options for backward compatibility
 CONFIG_TOOLPREFIX="riscv32-esp-elf-"
-# CONFIG_LOG_BOOTLOADER_LEVEL_NONE is not set
+CONFIG_LOG_BOOTLOADER_LEVEL_NONE=y
 # CONFIG_LOG_BOOTLOADER_LEVEL_ERROR is not set
 # CONFIG_LOG_BOOTLOADER_LEVEL_WARN is not set
-CONFIG_LOG_BOOTLOADER_LEVEL_INFO=y
+# CONFIG_LOG_BOOTLOADER_LEVEL_INFO is not set
 # CONFIG_LOG_BOOTLOADER_LEVEL_DEBUG is not set
 # CONFIG_LOG_BOOTLOADER_LEVEL_VERBOSE is not set
-CONFIG_LOG_BOOTLOADER_LEVEL=3
+CONFIG_LOG_BOOTLOADER_LEVEL=0
 # CONFIG_APP_ROLLBACK_ENABLE is not set
 # CONFIG_FLASH_ENCRYPTION_ENABLED is not set
 # CONFIG_FLASHMODE_QIO is not set
@@ -1542,8 +1541,8 @@ CONFIG_MONITOR_BAUD_115200B=y
 # CONFIG_MONITOR_BAUD_OTHER is not set
 CONFIG_MONITOR_BAUD_OTHER_VAL=115200
 CONFIG_MONITOR_BAUD=115200
-CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG=y
-# CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE is not set
+# CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG is not set
+CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE=y
 CONFIG_OPTIMIZATION_ASSERTIONS_ENABLED=y
 # CONFIG_OPTIMIZATION_ASSERTIONS_SILENT is not set
 # CONFIG_OPTIMIZATION_ASSERTIONS_DISABLED is not set

sdkconfig.esp32s2

@@ -256,8 +256,8 @@ CONFIG_TINYUSB_DEBUG_LEVEL=0
 # Compiler options
 #
 # CONFIG_COMPILER_OPTIMIZATION_DEFAULT is not set
-# CONFIG_COMPILER_OPTIMIZATION_SIZE is not set
-CONFIG_COMPILER_OPTIMIZATION_PERF=y
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
+# CONFIG_COMPILER_OPTIMIZATION_PERF is not set
 # CONFIG_COMPILER_OPTIMIZATION_NONE is not set
 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_ENABLE=y
 # CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT is not set
@@ -418,7 +418,7 @@ CONFIG_SPIRAM=y
 CONFIG_SPIRAM_USE_MALLOC=y
 CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=4096
 CONFIG_SPIRAM_TRY_ALLOCATE_WIFI_LWIP=y
-CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL=32768
+CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL=0
 # CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY is not set
 # end of SPI RAM config
 
@@ -858,7 +858,7 @@ CONFIG_LWIP_DNS_SUPPORT_MDNS_QUERIES=y
 # CONFIG_LWIP_L2_TO_L3_COPY is not set
 # CONFIG_LWIP_IRAM_OPTIMIZATION is not set
 CONFIG_LWIP_TIMERS_ONDEMAND=y
-CONFIG_LWIP_MAX_SOCKETS=10
+CONFIG_LWIP_MAX_SOCKETS=16
 # CONFIG_LWIP_USE_ONLY_LWIP_SELECT is not set
 # CONFIG_LWIP_SO_LINGER is not set
 CONFIG_LWIP_SO_REUSE=y
@@ -940,17 +940,9 @@ CONFIG_LWIP_TCPIP_TASK_STACK_SIZE=2560
 # CONFIG_LWIP_TCPIP_TASK_AFFINITY_NO_AFFINITY is not set
 CONFIG_LWIP_TCPIP_TASK_AFFINITY_CPU0=y
 CONFIG_LWIP_TCPIP_TASK_AFFINITY=0x0
-CONFIG_LWIP_PPP_SUPPORT=y
-CONFIG_LWIP_PPP_ENABLE_IPV6=y
+# CONFIG_LWIP_PPP_SUPPORT is not set
 CONFIG_LWIP_IPV6_MEMP_NUM_ND6_QUEUE=3
 CONFIG_LWIP_IPV6_ND6_NUM_NEIGHBORS=5
-# CONFIG_LWIP_PPP_NOTIFY_PHASE_SUPPORT is not set
-CONFIG_LWIP_PPP_PAP_SUPPORT=y
-CONFIG_LWIP_PPP_CHAP_SUPPORT=y
-CONFIG_LWIP_PPP_MSCHAP_SUPPORT=y
-CONFIG_LWIP_PPP_MPPE_SUPPORT=y
-# CONFIG_LWIP_ENABLE_LCP_ECHO is not set
-# CONFIG_LWIP_PPP_DEBUG_ON is not set
 # CONFIG_LWIP_SLIP_SUPPORT is not set
 
 #
@@ -1443,7 +1435,7 @@ CONFIG_USB_MSC_BUFSIZE=4096
 CONFIG_USB_DESC_HID_STRING="Espressif HID Device"
 CONFIG_USB_DEBUG_LEVEL=0
 # CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG is not set
-# CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE is not set
+CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE=y
 CONFIG_OPTIMIZATION_ASSERTIONS_ENABLED=y
 # CONFIG_OPTIMIZATION_ASSERTIONS_SILENT is not set
 # CONFIG_OPTIMIZATION_ASSERTIONS_DISABLED is not set
@@ -1532,13 +1524,7 @@ CONFIG_TCPIP_TASK_STACK_SIZE=2560
 # CONFIG_TCPIP_TASK_AFFINITY_NO_AFFINITY is not set
 CONFIG_TCPIP_TASK_AFFINITY_CPU0=y
 CONFIG_TCPIP_TASK_AFFINITY=0x0
-CONFIG_PPP_SUPPORT=y
-# CONFIG_PPP_NOTIFY_PHASE_SUPPORT is not set
-CONFIG_PPP_PAP_SUPPORT=y
-CONFIG_PPP_CHAP_SUPPORT=y
-CONFIG_PPP_MSCHAP_SUPPORT=y
-CONFIG_PPP_MPPE_SUPPORT=y
-# CONFIG_PPP_DEBUG_ON is not set
+# CONFIG_PPP_SUPPORT is not set
 CONFIG_ESP32_PTHREAD_TASK_PRIO_DEFAULT=5
 CONFIG_ESP32_PTHREAD_TASK_STACK_SIZE_DEFAULT=2048
 CONFIG_ESP32_PTHREAD_STACK_MIN=768