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fcd29a4d0e
cmd_cpp_cfg generates a dependency output, but because it's invoked using if_changed rather than if_changed_dep, that dependency file is ignored. This results in Kbuild not knowing about which files u-boot.cfg depends on, so it may not be rebuilt when required. A practical result of this is that u-boot.cfg may continue to reference CONFIG_ options that no longer exist in the source tree, and this can cause the adhoc config options check to fail. This change modifies Makefile to use if_changed_dep, which in turn causes all dependencies to be known to the next make invocation. Signed-off-by: Stephen Warren <swarren@nvidia.com>