1) Introducing the action_config message in the crosstool protobuf definition. The only part of that definition that are implemented in this CL is the "tool" section, other parts will be implemented in future CLs. The proto fields are here now to avoid being delayed by release cycles at each step of the implementation.
2) Refactoring the implementation of the "feature algebra" that computes the enabled features for a given toolchain. An interface called "CrosstoolActivatable" is used to represent any participant int the feature algebra, and can be either a feature or an action_config.
PiperOrigin-RevId: 118943663
The headers were modified with
`find . -type f -exec 'sed' '-Ei' 's|Copyright 201([45]) Google|Copyright 201\1 The Bazel Authors|' '{}' ';'`
And manual edit for not Google owned copyright. Because of the nature of ijar, I did not modified the header of file owned by Alan Donovan.
The list of authors were extracted from the git log. It is missing older Google contributors that can be added on-demand.
PiperOrigin-RevId: 103938715
This allows to prevent expansion of flag sets based on whether build variables
are available. If required_variables is not set, and a variable that is
referenced in the flag_set's flags is not available, the build will fail.
We need the new behavior when some input files (for example profile data in
FDO enabled builds) are only available for a subset of the translation units of
a given target.
RELNOTES: None.
PiperOrigin-RevId: 100028996
cpeyser