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Since WORKSPACE should point at the EDK2 tree, the right place to check its validity is edksetup.sh, not BaseTools/BuildEnv. This patch makes sure that BuildEnv is always invoked with a valid WORKSPACE. This lets us show better error messages, and ensures that we never dirty the user's environment. BuildEnv will maintain backwards-compatibility and, should the variable be missing, it will be able to set a default WORKSPACE. Only the sanity checks will be of lower quality. Note that the error message in SetupEnv will never be shown if SetWorkspace sets WORKSPACE=`pwd`. Suggested-by: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15701 6f19259b-4bc3-4df7-8a09-765794883524