cmake: Add new compiler optimization levels definitions

Rename and add multiple kconfig compiler options. New compiler options
COMPILER_OPTIMIZATION_PERF and COMPILER_OPTIMIZATION_NONE have been added.
Optimize "Debug" and "Release" options to "Default" and "Size" respectively.
This commit also does the following:

- The COMPILER_OPTIMIZATION_PERF option introduced multiple bug.
This commit fixes those bugs.
- build.yml also updated to test for the new optimization options.

CMakeLists.txt

@@ -9,11 +9,16 @@ unset(compile_definitions)
 # Add the following build specifications here, since these seem to be dependent
 # on config values on the root Kconfig.
 
-if(CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE)
+if(CONFIG_COMPILER_OPTIMIZATION_SIZE)
     list(APPEND compile_options "-Os")
     list(APPEND compile_options "-freorder-blocks")
-else()
+elseif(CONFIG_COMPILER_OPTIMIZATION_DEFAULT)
     list(APPEND compile_options "-Og")
+elseif(CONFIG_COMPILER_OPTIMIZATION_NONE)
+    list(APPEND compile_options "-O0")
+elseif(CONFIG_COMPILER_OPTIMIZATION_PERF)
+    list(APPEND compile_options "-O2")
+
 endif()
 
 if(CONFIG_COMPILER_CXX_EXCEPTIONS)

Kconfig

@@ -70,24 +70,35 @@ mainmenu "Espressif IoT Development Framework Configuration"
 
         choice COMPILER_OPTIMIZATION
             prompt "Optimization Level"
-            default COMPILER_OPTIMIZATION_LEVEL_DEBUG
+            default COMPILER_OPTIMIZATION_DEFAULT
             help
                 This option sets compiler optimization level (gcc -O argument).
 
-                - for "Release" setting, -Os flag is added to CFLAGS.
+                - The "Default" setting will add the -0g flag to CFLAGS.
-                - for "Debug" setting, -Og flag is added to CFLAGS.
+                - The "Size" setting will add the -0s flag to CFLAGS.
+                - The "Performance" setting will add the -O2 flag to CFLAGS.
+                - The "None" setting will add the -O0 flag to CFLAGS.
 
-                "Release" with -Os produces smaller & faster compiled code but it
+                The "Size" setting cause the compiled code to be smaller and faster, but
-                may be harder to correlated code addresses to source files when debugging.
+                may lead to difficulties of correlating code addresses to source file
+                lines when debugging.
 
-                To add custom optimization settings, set CFLAGS and/or CPPFLAGS
+                The "Performance" setting causes the compiled code to be larger and faster,
-                in project makefile, before including $(IDF_PATH)/make/project.mk. Note that
+                but will be easier to correlated code addresses to source file lines.
-                custom optimization levels may be unsupported.
 
-            config COMPILER_OPTIMIZATION_LEVEL_DEBUG
+                "None" with -O0 produces compiled code without optimization.
+
+                Note that custom optimization levels may be unsupported.
+
+            config COMPILER_OPTIMIZATION_DEFAULT
                 bool "Debug (-Og)"
-            config COMPILER_OPTIMIZATION_LEVEL_RELEASE
+            config COMPILER_OPTIMIZATION_SIZE
-                bool "Release (-Os)"
+                bool "Optimize for size (-Os)"
+            config COMPILER_OPTIMIZATION_PERF
+                bool "Optimize for performance (-O2)"
+            config COMPILER_OPTIMIZATION_NONE
+                bool "Debug without optimization (-O0)"
+
         endchoice
 
         choice COMPILER_OPTIMIZATION_ASSERTION_LEVEL

components/esp32/Kconfig

@@ -468,7 +468,7 @@ menu "ESP32-specific"
 
     config ESP32_DEBUG_STUBS_ENABLE
         bool "OpenOCD debug stubs"
-        default COMPILER_OPTIMIZATION_LEVEL_DEBUG
+        default COMPILER_OPTIMIZATION_DEFAULT
         depends on !ESP32_TRAX
         help
             Debug stubs are used by OpenOCD to execute pre-compiled onboard code which does some useful debugging,

components/esp_eth/src/esp_eth_mac_dm9051.c

@@ -390,10 +390,10 @@ static esp_err_t dm9051_verify_id(emac_dm9051_t *emac)
     uint8_t id[2];
     MAC_CHECK(dm9051_register_read(emac, DM9051_VIDL, &id[0]) == ESP_OK, "read VIDL failed", err, ESP_FAIL);
     MAC_CHECK(dm9051_register_read(emac, DM9051_VIDH, &id[1]) == ESP_OK, "read VIDH failed", err, ESP_FAIL);
-    MAC_CHECK(0x0A46 == *(uint16_t *)id, "wrong Vendor ID", err, ESP_ERR_INVALID_VERSION);
+    MAC_CHECK(0x0A == id[1] && 0x46 == id[0], "wrong Vendor ID", err, ESP_ERR_INVALID_VERSION);
     MAC_CHECK(dm9051_register_read(emac, DM9051_PIDL, &id[0]) == ESP_OK, "read PIDL failed", err, ESP_FAIL);
     MAC_CHECK(dm9051_register_read(emac, DM9051_PIDH, &id[1]) == ESP_OK, "read PIDH failed", err, ESP_FAIL);
-    MAC_CHECK(0x9051 == *(uint16_t *)id, "wrong Product ID", err, ESP_ERR_INVALID_VERSION);
+    MAC_CHECK(0x90 == id[1] && 0x51 == id[0], "wrong Product ID", err, ESP_ERR_INVALID_VERSION);
     return ESP_OK;
 err:
     return ret;

components/freertos/Kconfig

@@ -410,7 +410,7 @@ menu "FreeRTOS"
 
     config FREERTOS_TASK_FUNCTION_WRAPPER
         bool "Enclose all task functions in a wrapper function"
-        depends on COMPILER_OPTIMIZATION_LEVEL_DEBUG
+        depends on COMPILER_OPTIMIZATION_DEFAULT
         default y
         help
             If enabled, all FreeRTOS task functions will be enclosed in a wrapper function.

components/nvs_flash/src/nvs_storage.cpp

@@ -45,7 +45,7 @@ void Storage::populateBlobIndices(TBlobIndexList& blobIdxList)
         while (p.findItem(Page::NS_ANY, ItemType::BLOB_IDX, nullptr, itemIndex, item) == ESP_OK) {
             BlobIndexNode* entry = new BlobIndexNode;
 
-            item.getKey(entry->key, sizeof(entry->key) - 1);
+            item.getKey(entry->key, sizeof(entry->key));
             entry->nsIndex = item.nsIndex;
             entry->chunkStart = item.blobIndex.chunkStart;
             entry->chunkCount = item.blobIndex.chunkCount;
@@ -101,7 +101,7 @@ esp_err_t Storage::init(uint32_t baseSector, uint32_t sectorCount)
         Item item;
         while (p.findItem(Page::NS_INDEX, ItemType::U8, nullptr, itemIndex, item) == ESP_OK) {
             NamespaceEntry* entry = new NamespaceEntry;
-            item.getKey(entry->mName, sizeof(entry->mName) - 1);
+            item.getKey(entry->mName, sizeof(entry->mName));
             item.getValue(entry->mIndex);
             mNamespaces.push_back(entry);
             mNamespaceUsage.set(entry->mIndex, true);

components/nvs_flash/src/nvs_types.hpp

@@ -21,7 +21,9 @@
 #include <algorithm>
 #include "nvs.h"
 #include "compressed_enum_table.hpp"
+#include "string.h"
 
+using namespace std;
 
 namespace nvs
 {
@@ -125,7 +127,8 @@ public:
 
     void getKey(char* dst, size_t dstSize)
     {
-        strncpy(dst, key, (dstSize<MAX_KEY_LENGTH)?dstSize:MAX_KEY_LENGTH);
+        strncpy(dst, key, min(dstSize, sizeof(key)));
+        dst[dstSize-1] = 0;
     }
 
     template<typename T>
@@ -138,6 +141,4 @@ public:
 
 } // namespace nvs
 
-
-
 #endif /* nvs_types_h */

components/spiffs/component.mk

@@ -2,4 +2,7 @@ COMPONENT_ADD_INCLUDEDIRS := include
 COMPONENT_PRIV_INCLUDEDIRS := . spiffs/src
 COMPONENT_SRCDIRS := . spiffs/src
 
+# To avoid warning for strncpy in "spiffs_nucleus.c"
+CPPFLAGS += -Wno-stringop-truncation
+
 COMPONENT_SUBMODULES := spiffs

components/wifi_provisioning/CMakeLists.txt

@@ -20,3 +20,9 @@ idf_component_register(SRCS "${srcs}"
                     PRIV_INCLUDE_DIRS src proto-c ../protocomm/proto-c
                     REQUIRES lwip protocomm
                     PRIV_REQUIRES protobuf-c bt mdns json)
+
+# To avoid warning for strncpy
+set_source_files_properties(src/handlers.c src/scheme_softap.c
+    PROPERTIES COMPILE_FLAGS
+    -Wno-stringop-truncation
+)

components/wifi_provisioning/component.mk

@@ -2,6 +2,9 @@ COMPONENT_SRCDIRS := src proto-c
 COMPONENT_ADD_INCLUDEDIRS := include
 COMPONENT_PRIV_INCLUDEDIRS := src proto-c ../protocomm/proto-c/
 
+# To avoid warning for strncpy in "handlers.c" and "scheme_softap.c"
+CPPFLAGS += -Wno-stringop-truncation
+
 ifndef CONFIG_BT_BLUEDROID_ENABLED
     ifndef CONFIG_BT_NIMBLE_ENABLED
         COMPONENT_OBJEXCLUDE := src/scheme_ble.o

components/wpa_supplicant/src/tls/tlsv1_cred.c

@@ -157,7 +157,7 @@ static int tlsv1_set_cert_chain(struct x509_certificate **chain,
 
 	if (cert) {
 		u8 *buf = NULL;
-		size_t len;
+		size_t len = 0;
 		int ret;
 
 		if (buf == NULL) {
@@ -328,7 +328,7 @@ int tlsv1_set_private_key(struct tlsv1_credentials *cred,
 
 	if (private_key) {
 		u8 *buf = NULL;
-		size_t len;
+		size_t len = 0;
 		int ret;
 
 		if (buf == NULL) {
@@ -484,7 +484,7 @@ int tlsv1_set_dhparams(struct tlsv1_credentials *cred, const char *dh_file,
 
 	if (dh_file) {
 		u8 *buf = NULL;
-		size_t len;
+		size_t len = 0;
 		int ret;
 
 		if (buf == NULL) {

make/project.mk

@@ -417,12 +417,22 @@ endif
 endif
 
 # Optimization flags are set based on menuconfig choice
-ifdef CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE
+ifdef CONFIG_COMPILER_OPTIMIZATION_SIZE
 OPTIMIZATION_FLAGS = -Os -freorder-blocks
-else
+endif
+
+ifdef CONFIG_COMPILER_OPTIMIZATION_DEFAULT
 OPTIMIZATION_FLAGS = -Og
 endif
 
+ifdef CONFIG_COMPILER_OPTIMIZATION_NONE
+OPTIMIZATION_FLAGS = -O0
+endif
+
+ifdef CONFIG_COMPILER_OPTIMIZATION_PERF
+OPTIMIZATION_FLAGS = -O2
+endif
+
 ifdef CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_DISABLE
 CPPFLAGS += -DNDEBUG
 endif

sdkconfig.rename

@@ -8,8 +8,10 @@ CONFIG_MAKE_WARN_UNDEFINED_VARIABLES   CONFIG_SDK_MAKE_WARN_UNDEFINED_VARIABLES
 
 # Compiler options
 CONFIG_OPTIMIZATION_COMPILER                  CONFIG_COMPILER_OPTIMIZATION
-CONFIG_OPTIMIZATION_LEVEL_DEBUG           CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG
+CONFIG_OPTIMIZATION_LEVEL_DEBUG               CONFIG_COMPILER_OPTIMIZATION_DEFAULT
-CONFIG_OPTIMIZATION_LEVEL_RELEASE         CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE
+CONFIG_OPTIMIZATION_LEVEL_RELEASE             CONFIG_COMPILER_OPTIMIZATION_SIZE
+CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG      CONFIG_COMPILER_OPTIMIZATION_DEFAULT
+CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE    CONFIG_COMPILER_OPTIMIZATION_SIZE
 CONFIG_OPTIMIZATION_ASSERTION_LEVEL           CONFIG_COMPILER_OPTIMIZATION_ASSERTION_LEVEL
 CONFIG_OPTIMIZATION_ASSERTIONS_ENABLED        CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_ENABLE
 CONFIG_OPTIMIZATION_ASSERTIONS_SILENT         CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT

tools/ci/config/build.yml

@@ -45,13 +45,31 @@ build_template_app:
     - export PATH="$IDF_PATH/tools:$PATH"
     - export EXTRA_CFLAGS=${PEDANTIC_CFLAGS}
     - export EXTRA_CXXFLAGS=${PEDANTIC_CXXFLAGS}
+    
+    # CONFIG_COMPILER_OPTIMIZATION_DEFAULT with flag -Og
+    - echo "CONFIG_COMPILER_OPTIMIZATION_DEFAULT=y" >> sdkconfig
     - make defconfig
-    # Test debug build (default)
     - make all V=1
-    # Now test release build
     - make clean
-    - sed -i.bak -e's/CONFIG_OPTIMIZATION_LEVEL_DEBUG\=y/CONFIG_OPTIMIZATION_LEVEL_RELEASE=y/' sdkconfig
+
+    # CONFIG_COMPILER_OPTIMIZATION_SIZE with flag -Os
+    - echo "CONFIG_COMPILER_OPTIMIZATION_SIZE=y" >> sdkconfig
+    - make defconfig
     - make all V=1
+    - make clean
+    
+    # CONFIG_COMPILER_OPTIMIZATION_PERF with flag -O2
+    - echo "CONFIG_COMPILER_OPTIMIZATION_PERF=y" >> sdkconfig
+    - make defconfig
+    - make all V=1
+    - make clean
+
+    # CONFIG_COMPILER_OPTIMIZATION_NONE with flag -O0
+    - echo "CONFIG_COMPILER_OPTIMIZATION_NONE=y" >> sdkconfig
+    - make defconfig
+    - make all V=1
+    - make clean
+
     # Check if there are any stray printf/ets_printf references in WiFi libs
     - pushd ../components/esp_wifi/lib_esp32
     - test $(xtensa-esp32-elf-nm *.a | grep -w printf | wc -l) -eq 0

tools/ldgen/samples/sdkconfig

@@ -82,8 +82,10 @@ CONFIG_PARTITION_TABLE_MD5=y
 #
 # Compiler options
 #
-CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG=y
+CONFIG_COMPILER_OPTIMIZATION_DEFAULT=y
-CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE=
+CONFIG_COMPILER_OPTIMIZATION_SIZE=
+CONFIG_COMPILER_OPTIMIZATION_NONE=
+CONFIG_COMPILER_OPTIMIZATION_PERF=
 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_ENABLE=y
 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT=
 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_DISABLE=