region `RAM' overflowed by 400708 bytes

[ieio74]

I am trying to add a board support for STM32F746G (https://docs.zephyrproject.org/latest/boards/st/stm32f746g_disco/doc/index.html), but after defining the regions as described by https://docs.project-ocre.org/board-support/adding-support/ I have the following error:

/home/dbuffa/zephyr-sdk-0.17.0/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd: zephyr/zephyr_pre0.elf section bss' will not fit in region RAM'
/home/dbuffa/zephyr-sdk-0.17.0/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd: region `RAM' overflowed by 400708 bytes
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

[kr-t]

Hi, sorry for late response. In board that you have listed, you only have 340 Kbytes of RAM. That isn't a lot of RAM, and less, than Ocre uses by default. In order to make it work, you have to drastically reduces sizes in prj.conf and your boards' conf.file.
For example, by default
CONFIG_OCRE_WAMR_HEAP_BUFFER_SIZE=512000 (used for wamr), which is already much more than your whole RAM, and additionally we have CONFIG_HEAP_MEM_POOL_SIZE=65536 (used for ocre threads) and CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=-1 (the latest is used by system malloc to upload file to RAM, and -1 means everything that's left, so you'd still have to have some after setting the previous two).

I hope this helps.