https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119261
Bug ID: 119261
Summary: The mcpu parameter does not accept the star-mc1++cdecp
expansion when using arm-none-eabi.
Product: gcc
Version: 14.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: halfsweet at halfsweet dot cn
Target Milestone: ---
I am compiling with arm-none-eabi-gcc, my MCU has a star-mc1 kernel and has a
cdecp1 expansion. I checked the
[Arm-Options](https://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html#index-mcpu-2)
documentation and it mentions that combinations like star-mc1+cdecp1 are
acceptable in the mcpu field. But it fails when I try to use it.
```bash
arm-none-eabi-gcc -mcpu=star-mc1+cdecp1 -o test test.c
```
test.c
```
int main(){return 0;}
```
```log
arm-none-eabi-gcc: error: 'star-mc1' does not support feature 'cdecp1'
arm-none-eabi-gcc: note: valid feature names are: nofp nodsp
arm-none-eabi-gcc: error: 'star-mc1' does not support feature 'cdecp1'
arm-none-eabi-gcc: note: valid feature names are: nofp nodsp
```
