SDK13.0.0 DFU debug

[jwx]

I built ...\examples\dfu\bootloader_secure\secure_dfu.eww   ,pass,then when download to PCA10040 board to debug,but it show error" ELF/DWARF Error: Unsupported .debug_info format version:4 " ,what's the problem?

[Øyvind]

Hello, 

ELF/DWARF Error: Unsupported .debug_info format version:4

 This indicates an issue with debug settings that have been fixed after SDK v13.0. In your Makefile, please find the following line

CFLAGS +=  -Wall -Werror -Os -g3

And remove -g3. This should solve the issue. 

Kind regards,
Øyvind