'idf.py -B MyBuildDir all' creates folder called 'mybuilddir' (all lower-case) (IDFGH-8858)

[JBHunterI]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

ESP-IDF v5.0.0

Operating System used.

Windows

How did you build your project?

Command line with idf.py

If you are using Windows, please specify command line type.

CMD

What is the expected behavior?

> cd %userprofile%\esp
> xcopy /e /i %IDF_PATH%\examples\get-started\hello_world hello_world
> cd %userprofile%\esp\hello_world
> idf.py -B MyBuildDir set-target esp32c3 <-- specified build directory name contains upper- & lower-case letters
Adding "set-target"'s dependency "fullclean" to list of commands with default set of options.
Executing action: fullclean
Build directory '%userprofile%\esp\hello_world\mybuilddir' not found. Nothing to clean. <-- build directory name changed to all lower-case letters
Executing action: set-target
Set Target to: esp32c3, new sdkconfig created. Existing sdkconfig renamed to sdkconfig.old.
Running cmake in directory %userprofile%\esp\hello_world\mybuilddir <-- build directory name changed to all lower-case letters
...

What is the actual behavior?

> cd %userprofile%\esp
> xcopy /e /i %IDF_PATH%\examples\get-started\hello_world hello_world
> cd %userprofile%\esp\hello_world
> idf.py -B MyBuildDir set-target esp32c3 <-- specified build directory name contains upper- & lower-case letters
Adding "set-target"'s dependency "fullclean" to list of commands with default set of options.
Executing action: fullclean
Build directory '%userprofile%\esp\hello_world\MyBuildDir' not found. Nothing to clean. <-- build directory name as specified
Executing action: set-target
Set Target to: esp32c3, new sdkconfig created. Existing sdkconfig renamed to sdkconfig.old.
Running cmake in directory %userprofile%\esp\hello_world\MyBuildDir <-- build directory name as specified, i.e. unchanged
...

Steps to reproduce.

1. See "expected behavior" section above.

Build or installation Logs.

No response

More Information.

No response