# # For a description of the syntax of this configuration file, # see kconfig/kconfig-language.txt. # mainmenu "Espressif IoT Development Framework Configuration" menu "SDK tool configuration" config TOOLPREFIX string "Compiler toolchain path/prefix" default "xtensa-esp32-elf-" help The prefix/path that is used to call the toolchain. The default setting assumes a crosstool-ng gcc setup that is in your PATH. config PYTHON string "Python 2 interpreter" default "python" help The executable name/path that is used to run python. On some systems Python 2.x may need to be invoked as python2. config MAKE_WARN_UNDEFINED_VARIABLES bool "'make' warns on undefined variables" default "y" help Adds --warn-undefined-variables to MAKEFLAGS. This causes make to print a warning any time an undefined variable is referenced. This option helps find places where a variable reference is misspelled or otherwise missing, but it can be unwanted if you have Makefiles which depend on undefined variables expanding to an empty string. endmenu # SDK tool configuration source "$COMPONENT_KCONFIGS_PROJBUILD" menu "Compiler options" choice OPTIMIZATION_COMPILER prompt "Optimization Level" default OPTIMIZATION_LEVEL_DEBUG help This option sets compiler optimization level (gcc -O argument). - for "Release" setting, -Os flag is added to CFLAGS. - for "Debug" setting, -Og flag is added to CFLAGS. "Release" with -Os produces smaller & faster compiled code but it may be harder to correlated code addresses to source files when debugging. To add custom optimization settings, set CFLAGS and/or CPPFLAGS in project makefile, before including $(IDF_PATH)/make/project.mk. Note that custom optimization levels may be unsupported. config OPTIMIZATION_LEVEL_DEBUG bool "Debug (-Og)" config OPTIMIZATION_LEVEL_RELEASE bool "Release (-Os)" endchoice choice OPTIMIZATION_ASSERTION_LEVEL prompt "Assertion level" default OPTIMIZATION_ASSERTIONS_ENABLED help Assertions can be: - Enabled. Failure will print verbose assertion details. This is the default. - Set to "silent" to save code size (failed assertions will abort() but user needs to use the aborting address to find the line number with the failed assertion.) - Disabled entirely (not recommended for most configurations.) -DNDEBUG is added to CPPFLAGS in this case. config OPTIMIZATION_ASSERTIONS_ENABLED prompt "Enabled" bool help Enable assertions. Assertion content and line number will be printed on failure. config OPTIMIZATION_ASSERTIONS_SILENT prompt "Silent (saves code size)" bool help Enable silent assertions. Failed assertions will abort(), user needs to use the aborting address to find the line number with the failed assertion. config OPTIMIZATION_ASSERTIONS_DISABLED prompt "Disabled (sets -DNDEBUG)" bool help If assertions are disabled, -DNDEBUG is added to CPPFLAGS. endchoice # assertions config CXX_EXCEPTIONS bool "Enable C++ exceptions" default n help Enabling this option compiles all IDF C++ files with exception support enabled. Disabling this option disables C++ exception support in all compiled files, and any libstdc++ code which throws an exception will abort instead. Enabling this option currently adds an additional 20KB of heap overhead, and 4KB of additional heap is allocated the first time an exception is thrown in user code. endmenu # Compiler Options menu "Component config" source "$COMPONENT_KCONFIGS" endmenu