TUNE_FEATURES -Features used to "tune" a compiler for optimal use given a specific processor. The features are defined within the tune files, is automatically defined as TUNE_FEATURES_tune-<tune>.
TUNE_FEATURES_tune-<tune> - Specify the features used to describe a specific tune. This is a list of features that a t une support, each feature must be in the TUNEVALID list.
Please refer to the following in sources/poky/meta/conf/machine/include/tune-ppce500v2.inc.
TUNE_FEATURES_tune-ppce500v2 = "m32 spe ppce500v2"
Have a great day,
Yiping
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