overriding PRODUCT_COPY_FILES entries

[Testing 33]

Hi, can we override specific PRODUCT_COPY_FILES entry ?
Example: if A.mk and B.mk are copying different files but at same destination. then i want that B.mk's PRODUCT_COPY_FILES line should override A.mk and that too without making any changes in A.mk.

[chris simmonds]

Yes, make sure that B.mk is parsed before A.mk, because it is the first PRODUCT_COPY_FILES for a given destination that matters. For example, if I want to override the init.cutf_cvm.rc provided by aosp_cf.mk I can do it like this:

PRODUCT_COPY_FILES += $(LOCAL_PATH)/init.cutf_cvm.rc:vendor/etc/init/hw/init.cutf_cvm.rc

$(call inherit-product, device/google/cuttlefish/vsoc_x86_64/phone/aosp_cf.mk)

I suspect this works "by accident", but I have been using this trick in my device config for many years so I think it is reliable

HTH,

Chris Simmonds

On Mon, 8 Jul 2024 at 17:34, Testing 33 <testing...@gmail.com> wrote:

Hi, can we override specific PRODUCT_COPY_FILES entry ?
Example: if A.mk and B.mk are copying different files but at same destination. then i want that B.mk's PRODUCT_COPY_FILES line should override A.mk and that too without making any changes in A.mk.

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[Dan Willemsen]

Yes, the "first" entry in PRODUCT_COPY_FILES for a destination wins, and any others are ignored (and written to $OUT/product_copy_files_ignored.txt during `dist` builds, though you can explicitly ask for it to be built with `m` as well).

"first" can be a complicated topic with inherit-product however, so I'd recommend verifying your changes carefully. The order between local modifications to PRODUCT_* variables and inherit-product within a makefile doesn't matter -- inherit-product just saves a list of files to be included later, then combined into the inheritance tree.

- Dan

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