Add minimal install script

[illuhad]

This can be useful for training courses etc. when people just need to get a SYCL implementation asap with minimal dependencies.

[Momellouky]

Hello,
I have tried to run this script on ubuntu 22.04 LTS. I am facing a problem with the following include (#include "clang/AST/ASTContext.h"). It says that No such file or directory.
The complete error message:
fatal error: clang/AST/ASTContext.h: No such file or directory
38 | #include "clang/AST/ASTContext.h"
| ^~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

[illuhad]

It's possible that, if cmake finds an LLVM installation, the new SSCP compiler is enabled which then might fail if you are lacking a sufficiently new LLVM installation (in your case, probably the llvm -dev packages are missing).

Can you try:

1. Open the minimal install script
2. Edit the line where cmake is invoked and add -DWITH_SSCP_COMPILER=OFF
3. Run the script again

[Momellouky]

Hi.
Yes, you are right. In fact now it works perefectly. It compiles and everything is fine.
Thank you.

[illuhad]

Thanks for the feedback, I have opened PR #1009 to fix this issue in the script.