Make: Error 258 Posted by LostInSpace on 2017-01-30 20:29 We will see if the patch mentioned above works, but this is the way I have been making this work, Change (example for Eclipse and STSW4STM32) in Tool Settings - MCU GCC Compiler - Symbols, from weak=attribute__weak packed=attributepacked__ to 'weak=attribute__weak' 'packed=attributepacked__'