How do I get ARMLMD_LICENSE_FILE

Im trying to compile NFE_Silverware on Linux Mint 21 x86_64 I downloaded ARMCompiler_506_Linux_x86_b960 but when I run make I'm getting following error

$ make
 + Compiling 'angle_pid.c'
Error: C9511E: Unable to determine the current toolkit. Check that ARM_TOOL_VARIANT is set correctly.
ARM Compiler could not determine the product installation it is part of. You might be able to resolve this by reinstalling the tools, or ensuring that ARM_TOOL_VARIANT and ARM_PRODUCT_PATH are set appropriately.
Information about this error is available at: ds.arm.com/.../lic86
 General licensing information is available at: ds.arm.com/.../
 If you need further help, provide this complete error report to your supplier or license.support@arm.com.
 - ARMLMD_LICENSE_FILE: unset
 - LM_LICENSE_FILE: unset
 - ARM_TOOL_VARIANT: 'mdk_lite'
 - ARM_PRODUCT_PATH: unset
 - Product location: product not found
 - Toolchain location: /home/slobodan/ARM_Compiler_5.06u7/bin
 - Selected tool variant: mdk_lite
Product: unknown
Component: ARM Compiler 5.06 update 7 (build 960)
Tool: armcc [4d365d]
make: *** [Makefile:48: obj/angle_pid.o] Error