STM32MP157 ECO 6.0.0 OP-TEE build fails: libgcc.a not found

[debugging]

OPTEE builds fine on ECO 5.0 (just built it right now with ECO SDK 5.0).

OPTEE build fails on ECO 6.0  (SDK 6.0)

Both on the same machine.

Both using the same Cube-MX generated files and build commands used for both ECO versions.

LD build/core/all_objs.o
arm-ostl-linux-gnueabi-ld.bfd: cannot find libgcc.a: No such file or directory

[debugging · Accepted solution]

I overlooked that the issue is actually mentioned in the OP-TEE wiki for the compiler option.