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Save 8 to 17 KB of flash on ESP32 boards #11629

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Merged
tannewt merged 1 commit into from
Oct 19, 2026
Merged

Save 8 to 17 KB of flash on ESP32 boards #11629

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38 changes: 37 additions & 1 deletion ports/espressif/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -985,7 +985,43 @@ ifeq ($(IDF_TARGET),esp32)
BINARY_BLOBS += esp-idf/components/esp_phy/lib/$(IDF_TARGET)/librtc.a
endif

ESP_IDF_COMPONENTS_LINK = $(IDF_TARGET_ARCH) $(CHIP_COMPONENTS) app_update bootloader_support driver esp_driver_dma esp_driver_gpio esp_driver_gptimer esp_driver_i2c esp_driver_ledc esp_driver_spi esp_driver_uart efuse esp_adc esp_app_format esp_common esp_event esp_gdbstub esp_hal_ana_conv esp_hal_clock esp_hal_gpio esp_hal_gpspi esp_hal_i2c esp_hal_ledc esp_hal_mspi esp_hal_security esp_hal_timg esp_hal_uart esp_hal_wdt esp_hw_support esp_mm esp_partition esp_pm esp_ringbuf esp_rom esp_system esp_timer freertos hal heap log esp_libc nvs_flash nvs_sec_provider pthread soc spi_flash vfs esp_stdio
# CONFIG_COMPILER_CXX_EXCEPTIONS is off, so IDF's cxx component replaces these
# with stubs that abort, and C++ code such as nvs_flash does not link libgcc's
# unwinder. Same list as esp-idf/components/cxx/CMakeLists.txt.
CXX_EXCEPTION_WRAPS = \
__register_frame_info_bases \
__register_frame_info \
__register_frame \
__register_frame_info_table_bases \
__register_frame_info_table \
__register_frame_table \
__deregister_frame_info_bases \
__deregister_frame_info \
_Unwind_Find_FDE \
_Unwind_GetGR \
_Unwind_GetCFA \
_Unwind_GetIP \
_Unwind_GetIPInfo \
_Unwind_GetRegionStart \
_Unwind_GetDataRelBase \
_Unwind_GetTextRelBase \
_Unwind_SetIP \
_Unwind_SetGR \
_Unwind_GetLanguageSpecificData \
_Unwind_FindEnclosingFunction \
_Unwind_Resume \
_Unwind_RaiseException \
_Unwind_DeleteException \
_Unwind_ForcedUnwind \
_Unwind_Resume_or_Rethrow \
_Unwind_Backtrace \
__cxa_call_unexpected \
__gxx_personality_v0 \
__cxa_throw \
__cxa_allocate_exception
LDFLAGS += $(foreach f,$(CXX_EXCEPTION_WRAPS),-Wl,--wrap=$(f))

ESP_IDF_COMPONENTS_LINK = $(IDF_TARGET_ARCH) $(CHIP_COMPONENTS) app_update bootloader_support driver esp_driver_dma esp_driver_gpio esp_driver_gptimer esp_driver_i2c esp_driver_ledc esp_driver_spi esp_driver_uart efuse esp_adc esp_app_format esp_common esp_event esp_gdbstub esp_hal_ana_conv esp_hal_clock esp_hal_gpio esp_hal_gpspi esp_hal_i2c esp_hal_ledc esp_hal_mspi esp_hal_security esp_hal_timg esp_hal_uart esp_hal_wdt esp_hw_support esp_mm esp_partition esp_pm esp_ringbuf esp_rom esp_system esp_timer freertos hal heap log esp_libc nvs_flash nvs_sec_provider pthread soc spi_flash vfs esp_stdio cxx
ifneq ($(IDF_TARGET),esp32)
ESP_IDF_COMPONENTS_LINK += esp_hal_systimer
endif
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