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Java Environment Variables and Properties

Thie page attempts to document details about environment variables and properties that affect the SpinalHDL project a different times.

Environment Variables

These can be setup often using export VARNAME=value from a Linux/MacOS system shell, or with in windows with set VARNAME=value.

Name	Default	Description
SPINAL_TARGET_DIR	“.”	Initializes SpinalConfig.defaultTargetDirectory
SPINAL_SIM_WORKSPACE	“./simWorkspace”	Location of workspace for SpinalSim simulation working area.
VERILATOR_BIN	By default verilator_bin is expected in the $PATH	Location override for the verilator_bin when using the Verilator Simulation backend of SpinalSim.
MAKE	By default make is expected in the $PATH	Location overide

System Properties

These can be setup often using the -P options to build tools like sbt or java, for example sbt -Pspinal.property.example=value clean build.

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• • Name

  • Default

  • Description

• • spinal.core.SpinalConfig.headerWithRepoHash

  • true

  • Set ‘true’ or ‘false. Provides default to SpinalConfig.

• • spinal.sim.VerilatorBackendConfig.maxCacheEntries

  • 100

  • Set a 0 or positive interger number. 0 means unlimited.

• • spinal.sim.Config.maxCacheEntries

  • 100

  • Set a 0 or positive interger number. 0 means unlimited.

• • user.home

  • Defined by JVM from $HOME

• • os.arch

  • Defined by JVM from runtime platform

  • Used to configure internals for Linux/MacOS/Windows runtime platform

• • os.name

  • Defined by JVM from runtime platform

  • Used to configure internals for Linux/MacOS/Windows runtime platform

• • java.home

  • Defined by JVM from runtime platform

  • Used to configure internals for Linux/MacOS/Windows runtime platform