Time check flag propagation and default value.

[ACSimon33]

Description

We had an issue where we need architecture flags for the Nagfor compiler to run on Apple Silicon. Those flags are defined from the outside build harness via:

-DCMAKE_Fortran_FLAGS="-Wc,-target,arm64-apple-macos11" -DCMAKE_EXE_LINKER_FLAGS="-Wl,-arch,arm64"

The problem was that these flags weren't propagated to the time check subproject, resulting in all of the tests failing including second_NONE.f. That alone wouldn't be a problem if the default value for TIME_FUNC was set correctly, which wasn't the case.

I added the flag propagation as well as the correct default value for TIME_FUNC. I also added -DCMAKE_VERBOSE_MAKEFILE=ON which will add a bit more output to the log files. It won't add anything to stdout or stderr.

Checklist

• [N/A] The documentation has been updated.
• [N/A] If the PR solves a specific issue, it is set to be closed on merge.