Hi all,

I downloaded newest Segger System Viewer V332 and tried to integrate the target specific Segger Systemviewer sources into my STM32F429BG uC project.
When I building the project with the GNU GGC compiler V9-2020q2 I will get some assemler errors when compiling segger file SEGGER_RTT_ASM_ARMv7M.S (see attachement)

Why has the gnu gcc assembler problems with this assembler file ?

Thanks a lot for your support.

Best Regards
Jochen

In the meantime, I found the bug by myself.
I renamed the assembler file from SEGGER_RTT_ASM_ARMv7M.S to SEGGER_RTT_ASM_ARMv7M.s, because all of my assembler files (e.g. startup ...) has a lowercase "s" ending.

The GNU GCC assembler interprets this as a normal assembler file but SEGGER_RTT_ASM_ARMv7M contains assembler code which must be pre-processed and therefore it is notated as a upercase "S" !

Looking into the GNU GCC documentation, there is a description how the assembler interprets files with ".s" and ".S" endings.

So, if I leave the file unchanged with the uppercase ending ".S", the assembler builds the file with no errors

This thread is solved and could be closed by an adminsitrator.
Thanks a lot

Jochen