[BUG] erpcgen does not work with multiple files

[sillydan1]

Describe the bug

When invoked with multiple files the erpcgen tool only generates files for the first file.

I would argue that the help page indicates that it is an official feature that you can provide multiple .erpc files:

usage: erpcgen [-?|--help] [-V|--version] [-o|--output <filePath>]
               [-v|--verbose] [-I|--path <filePath>] [-g|--generate <language>]
               [-c|--codec <codecType>] [-p|--package <packageName>] files...

To Reproduce

Say I have two .erpc files; foo.erpc and bar.erpc, then when I invoke erpcgen:

erpcgen -g c src/erpc/foo.erpc src/erpc/bar.erpc

Then it only generates files for foo.erpc.

Expected behavior

I would expect to have foo_{client,interface,common,etc}.cpp, as well as bar_{client,server,common,etc}.cpp files in the output directory.

Desktop (please complete the following information)

• OS: GNU/Linux
• eRPC Version: 1.12.0

Steps you didn't forgot to do

• I checked if there is no related issue opened/closed.
• I checked that there doesn't exist opened PR which is solving this issue.

Additional Notes

A quick and dirty "solution" would be to have a single main.erpc file that imports the other .erpc files, but that is suboptimal due to all the generated files would then be named main_{client,interface,common,etc}.cpp and that just results in confusion when #include-ing and compilation would compile potentially unused functions.

EDIT: Probably the easiest solution would be to simply say that compiling multiple files is not supported and update the help message.

[github-actions]

Hi eRPC user. Thank you for your interest and welcome. We hope you will enjoy this framework well.