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migrate kds2 to kds3 got compiler error

Question asked by daniel zhang on Jun 22, 2015
Latest reply on Jun 30, 2015 by daniel zhang

I have a project build on cortex-m0plus, currently using kds2.0

after i had opened it in kds3.0, I change the link flag from -nanolibc to -specs=nano.specs -specs=nosys.specs

there is a compiler error saying :

selected processor does not support Thumb mode 'mrs R0, MSP'

I checked the build settings:

I found that the compiler option is missing -mcpu= cortex-m0plus,

if I add -mcpu= cortex-m0plus in the Other target flags, then it builds without the error, So why this option is not included in the compiler option list automatically? because I already select the ARM family to cortex-m0plus like in the above image.

I checked this project in KDS2.0, that also does not include this option, but in kds2.0, it is default to build for cortex-m0plus, so there is no compiler error.