Fix AIE Makefile POSIX shell compatibility in Versal VSS tutorial

[avmaris]

Problem

On Ubuntu 22.04 and other Debian-based systems, /bin/sh is symlinked to dash (a POSIX-compliant shell) rather than bash. The Makefile in the Versal Vitis Subsystem Flow design tutorial uses bash-specific syntax |& which causes build failures:

/bin/sh: 7: Syntax error: "&" unexpected
make[3]: *** [Makefile:114: datamove_app_libadf.a] Error 2

This affects the AIE compilation step in the Versal Vitis Subsystem Flow example (Design Tutorial 02).

Solution

Replaced all instances of |& with POSIX-compatible 2>&1 | syntax in:

• Vitis_System_Design/Design_Tutorials/02-Versal_Vitis_Subsystem_Flow/vss/ip/aie/Makefile

Tutorial Context

This fix is for the 02-Versal_Vitis_Subsystem_Flow design tutorial, which includes:

• 'Vitis_System_Design/Design_Tutorials/02-Versal_Vitis_Subsystem_Flow/vitis/Makefile'
• 'Vitis_System_Design/Design_Tutorials/02-Versal_Vitis_Subsystem_Flow/vss/Makefile'
• 'Vitis_System_Design/Design_Tutorials/02-Versal_Vitis_Subsystem_Flow/vss/ip/aie/Makefile'

Testing

Reproduce the issue (Ubuntu 22.04):

Build in Ubuntu 22.04

cd Vitis_System_Design/Design_Tutorials/02-Versal_Vitis_Subsystem_Flow
make all

Error: /bin/sh: Syntax error: "&" unexpected

Verify the fix:

Apply this PR and rebuild

cd Vitis_System_Design/Design_Tutorials/02-Versal_Vitis_Subsystem_Flow
make all

Should proceed without shell syntax errors