pimoroni-pico/micropython/modules/micropython-disable-excepti...

# Do not include stack unwinding & exception handling for C++ user modules
target_compile_definitions(usermod INTERFACE PICO_CXX_ENABLE_EXCEPTIONS=0)
target_compile_options(usermod INTERFACE $<$<COMPILE_LANGUAGE:CXX>:
    -fno-exceptions
    -fno-unwind-tables
    -fno-rtti
    -fno-use-cxa-atexit
    -ffunction-sections
    -fdata-sections
    -Wl,--gc-sections
    -Wl,--no-ld-generated-unwind-info
>)
Move nano specs hack into our module cmake files. We've been maintaining a downstream patch to disable C++ exception handling, which gives us some headroom before our builds get too big and overwrite themselves at runtime. Forgetting to apply this patch is a constant source of debugging frustration. It turns out it can just be added to our USER_C_MODULES cmake files instead, where it will implicitly be included when building against our modules. 2024-07-03 15:18:44 +00:00			`# Do not include stack unwinding & exception handling for C++ user modules`
			`target_compile_definitions(usermod INTERFACE PICO_CXX_ENABLE_EXCEPTIONS=0)`
			`target_compile_options(usermod INTERFACE $<$<COMPILE_LANGUAGE:CXX>:`
			`-fno-exceptions`
			`-fno-unwind-tables`
			`-fno-rtti`
			`-fno-use-cxa-atexit`
Add -ffunction-sections and -Wl,--gc-sections. 2025-05-28 20:57:37 +00:00			`-ffunction-sections`
Add -fdata-sections. 2025-05-28 21:04:10 +00:00			`-fdata-sections`
Add -ffunction-sections and -Wl,--gc-sections. 2025-05-28 20:57:37 +00:00			`-Wl,--gc-sections`
Add --no-ld-generated-unwind-info. 2025-05-28 20:50:47 +00:00			`-Wl,--no-ld-generated-unwind-info`
Move nano specs hack into our module cmake files. We've been maintaining a downstream patch to disable C++ exception handling, which gives us some headroom before our builds get too big and overwrite themselves at runtime. Forgetting to apply this patch is a constant source of debugging frustration. It turns out it can just be added to our USER_C_MODULES cmake files instead, where it will implicitly be included when building against our modules. 2024-07-03 15:18:44 +00:00			`>)`