bf68b9e597
* Add LTO support for nrf52840 while preserving interrupt handlers * nrf52840: enable whole-image LTO on all targets via nrf52_base Moves -flto + the nrf52_lto.py exclusion middleware from the rak4631 env (771018ca8) up to [nrf52_base], so every nrf52840 target inherits it. nrf52_lto.py keeps the interrupt handlers out of LTO (framework core + TinyUSB USBD_IRQHandler) -- they're referenced only from the asm vector table, so whole-program LTO would otherwise drop them and the chip hangs. HW-validated: RAK4631 (SX1262, -60KB) and muzi-base (LR1121) both boot and init their radios. Build-verified on canaryone (fresh board, base-inherited). Caveat: the RAK "1-Watt" variant's radio does not tolerate global-LTO (SX126x init fails); it shares the rak4631 binary, so keep that hardware on src-only or split it into a separate target. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * nrf52840: move -fmerge-all-constants to nrf52_base (all targets) It had been trialed on rak4631 only; it's a general image-wide flag (the same one stm32 uses globally, ~0.7KB), so move it up to [nrf52_base] next to -flto so every nrf52840 target gets it instead of just rak4631. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * nrf52_lto.py: normalize path separators for Windows (Copilot review) get_abspath() returns backslash-separated paths on Windows, so the "/FrameworkArduino/" / "/cores/nRF5/" substring matches would miss and the ISR-owning objects would still be LTO'd -> hang on first IRQ. Replace backslashes with forward slashes before matching. No-op on macOS/Linux. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * Fix directory handling for LTO * Add post-link guard to check for dropped ISR handlers in nrf52 LTO --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Co-authored-by: Jason P <applewiz@mac.com>
57 lines
1.9 KiB
INI
57 lines
1.9 KiB
INI
[nrf52_base]
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; Instead of the standard nordicnrf52 platform, we use our fork which has our added variant files
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platform =
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# renovate: datasource=custom.pio depName=platformio/nordicnrf52 packageName=platformio/platform/nordicnrf52
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platformio/nordicnrf52@10.11.0
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extends = arduino_base
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platform_packages =
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; our custom Git version with C++17 support in platform.txt
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# TODO renovate
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platformio/framework-arduinoadafruitnrf52 @ https://github.com/meshtastic/Adafruit_nRF52_Arduino#master
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; Don't renovate toolchain-gccarmnoneeabi
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platformio/toolchain-gccarmnoneeabi@~1.90301.0
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extra_scripts =
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${env.extra_scripts}
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extra_scripts/nrf52_extra.py
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pre:extra_scripts/nrf52_lto.py
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build_type = release
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build_flags =
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-include variants/nrf52840/cpp_overrides/lfs_util.h
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${arduino_base.build_flags}
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-Wno-unused-variable
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-Isrc/platform/nrf52
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-DLFS_NO_ASSERT ; Disable LFS assertions , see https://github.com/meshtastic/firmware/pull/3818
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-DMESHTASTIC_EXCLUDE_AUDIO=1
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-DMESHTASTIC_EXCLUDE_PAXCOUNTER=1
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-Os
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-std=gnu++17
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-flto ; whole-image LTO (~-60KB) on every nrf52840 target; nrf52_lto.py (pre: extra_script) keeps the interrupt handlers out of LTO so they survive
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-fmerge-all-constants ; fold identical constants image-wide (~0.7KB; same flag stm32 uses)
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build_unflags =
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-Ofast
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-Og
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-ggdb3
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-ggdb2
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-g3
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-g2
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-g
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-g1
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-g0
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-std=c++11
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-std=gnu++11
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build_src_filter =
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${arduino_base.build_src_filter} -<platform/esp32/> -<platform/nrf54l15/> -<platform/stm32wl> -<nimble/> -<mesh/wifi/> -<mesh/api/> -<mesh/http/> -<modules/esp32> -<platform/rp2xx0> -<mesh/eth/> -<mesh/raspihttp> -<serialization/>
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lib_deps=
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${arduino_base.lib_deps}
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${radiolib_base.lib_deps}
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# renovate: datasource=custom.pio depName=rweather/Crypto packageName=rweather/library/Crypto
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rweather/Crypto@0.4.0
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lib_ignore =
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BluetoothOTA
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lvgl
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