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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
You could get rid of
-Wl,--gc-sections, which might lead to a nonzero file size - it probably still won't work but you might be able to look at the.lstfile and get an idea why the entrypoint isn't getting called?Also can you compile with
RELEASE=1 PICO_1V3=1 makeand see if that works?It looks like you're still using Windows as well?
If I were you I'd really just install a VM and use Ubuntu with arm-none-eabi-gcc. Trying to change to do the build under windows as well as porting to a new chip is just asking for trouble.
There are also some webpages on building for EFM32 with Makefiles too - maybe try one of them... Don't use Espruino at all at the moment but just try and get something building with GCC and a Makefile.