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Environment Settings

If you run the LX51 Linker within the µVision IDE, you do not need any additional settings on your computer. If you want to run the linker and utilities from the command prompt, you must manually create the following environment variables.

Variable Path Description
PATH \KEIL\C51\BIN Path to the executable programs.
TMP   Path to use for temporary files generated by the compiler. If the specified path does not exist, the compiler generates an error and aborts compilation.
C51INC \KEIL\C51\INC Path to the folder for C51 include files.
C51LIB \KEIL\C51\LIB Path to the folder for C51 library files.

Environment variables are entered under Control Panel — System — Advanced — Environment Variables.

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