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GN tracking of header file changes
Open, Needs TriagePublic

Description

There are two things to investigate here:

  1. How does GN track header files when building Hafnium, i.e. does a change in a header file trigger rebuild of all source files that include it?
  2. We've seen the build system not recompile the Linux driver after a change to one of Hafnium's header files (inc/vmapi/hf/*).
    1. make needs to rebuild the driver if a header file changes
    2. GN needs to run make on the driver if a header file changes

(Migrated from b/141459219.)

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