CMake intermittently doesn't find ASM during build

Usage
1

Usually, all works fine with the scripts and commands.
We’ve been seeing this issue occasionally from time to time, during many different unrelated regression tests.

Please see the command used and the error log:

*cmake -B sw/cpu_app/build -G Unix\ Makefiles -S sw/cpu_app -DCMAKE_BUILD_TYPE=Release
*-- The ASM compiler identification is unknown
*-- Found assembler: /<path/masked/>/toolchain/riscv32-unknown-elf/bin/riscv32-unknown-elf-gcc
*-- Warning: Did not find file Compiler/-ASM
*-- The C compiler identification is GNU 12.1.0
*-- Detecting C compiler ABI info
*-- Detecting C compiler ABI info - done
*-- Check for working C compiler: /<path/masked/>/toolchain/riscv32-unknown-elf/bin/riscv32-unknown-elf-gcc - skipped
*-- Detecting C compile features
*-- Detecting C compile features - done
*-- The CXX compiler identification is GNU 12.1.0
*-- Detecting CXX compiler ABI info
*-- Detecting CXX compiler ABI info - done
*-- Check for working CXX compiler: /<path/masked/>/toolchain/riscv32-unknown-elf/bin/riscv32-unknown-elf-c++ - skipped
*-- Detecting CXX compile features
*-- Detecting CXX compile features - done
*-- Warning: Did not find file Compiler/-ASM
*-- Configuring incomplete, errors occurred!

Environment: SUSE 12 Linux.

Manually it is difficult to reproduce the issue, as it is happening during the regression tests.
Any leads to the cause of the issue will be helpful.
Thank you.

2

It looks like a cross-compile and that the target platform is not set properly based on the /-ASM here:

I think it might be best to set up a toolchain file that describes the target system in a reliable way.

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