compile failed when use tiarmclang 5.1.1

CMSIS_6

CMSIS_6/CMSIS/Core/Include/cmsis_compiler.h

Line 40 in 855aedd

#include "cmsis_clang.h"

CMSIS_6/CMSIS/Core/Include/m-profile/cmsis_clang_m.h

Line 46 in 855aedd

#define __PROGRAM_START _start

CMSIS_5

https://github.com/ARM-software/CMSIS_5/blob/55b19837f5703e418ca37894d5745b1dc05e4c91/CMSIS/Core/Include/cmsis_tiarmclang.h#L123

#define __PROGRAM_START           _c_int00

compile failed when use CMSIS_6 but works fine with CMSIS_5

CMSIS_6 tell tiarmclang to use cmsis_clang.h, where __PROGRAM_START is defined as _start. However, tiarmclang actually uses _c_int00

I resolved this by modifying startup_DEVICE.c ahead of the #include "DEVICE.h" statement.

// startup_DEVICE.c
#if defined ( __clang__ ) && defined ( __ti__ )
  #define __PROGRAM_START _c_int00
  #define __INITIAL_SP __stack
#endif

#include "DEVICE.h"

@mikisama

@mikisama, for now I added the TI Clang specifics into the generic clang header file. Please double check if the minimal fix in #315 is sufficient for you on the short run. Longer term, we might need to think about addressing such c library details as an independent degree of freedom. I.e., we've already seen similar challenges when building with newlib, picolib, or others.

@JonatanAntoni

Hi, @JonatanAntoni

It’s fixed

I think CI can help solve this type of compile failed errors

Fix __PROGRAM_START definition for TI Arm Clang (tiarmclang) (#315)

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compile failed when use tiarmclang 5.1.1 #312

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compile failed when use tiarmclang 5.1.1 #312

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CMSIS_6

CMSIS_5

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mikisama commented on Sep 1, 2026

JonatanAntoni commented on Sep 1, 2026

mikisama commented on Sep 2, 2026

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