Solution: Keil5 compiler error: ARMLMD_LICENSE_FILE unset

Oct 25, 2023380

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The Keil MDK version has been updated to the latest version, V5.38. However, this version does not support Compiler 5 and defaults to Compiler 6. To resolve this issue, the user installed Compiler 5 (Arm Compiler version 5, V5.06 update 7) with a separate patch. They then added Compiler 5 to Keil and set it as the default compiler. However, Keil was unable to build the project and displayed the given error message. The solution provided is to install ARM Compiler V5 in the specified directory within the Keil installation path and select Compiler V5 as the project's compiler.

The keil MDK version has been updated to the latest version, which is V5.38. Since V5.38 does not support compiler 5 and sets the default compiler to compiler 6, I installed compiler 5 (Arm compiler version 5, V5.06 update 7) with a separate patch. Then I added compiler 5 to keil and set it as the default compiler. However, keil was unable to build the project, and the build output section printed the following:

ARMLMD_LICENSE_FILE: unset
LM_LICENSE_FILE: unset
ARM_PRODUCT_DEF: unset
ARM_PRODUCT_PATH: unset
ARM_TOOL_VARIANT: unset

Solution:
Install ARM compiler V5 in [Keil installation path]\ARM\ARM_Compiler_5.06u7, for example: if my Keil is installed in D:\Keil directory, then the compiler should be installed in D:\Keil\ARM\ARM_Compiler_5.06u7.
Then select compiler V5 as the compiler for the project.