Why Can\'t I Load My Native Library in Apex_defaults Multilib?

Debugging Native Library Loading in Apex

As you face an issue with loading a native library into apex_defaults multilib, it's important to ensure that your .go file is compiled and integrated into the build process. Let's delve into the details.

Understanding Go Implementation

The .go file you've created provides a dynamic way to append a library to the apex_defaults multilib. The conditional statements within the function globalFlags are designed to check for a specific device name. Upon meeting this condition, the library "libabcextractor" will be added to the native_shared_libs array.

Checking Build Compilation

Confirm that the .go file is indeed compiled by verifying the presence of its compiled .a file in the out/soong/.bootstrap directory. This confirms its integration into the build process.

Possible Source of Issue

Upon further inspection, it's crucial to ensure that the struct fields in the .go file are exported (capitalized). As the build process utilizes reflection to read struct fields, unexported fields remain inaccessible.

Fixing the Problem

In your First struct, the native_shared_libs field should be exported by capitalizing it like this:

<code class="go">type props struct {
    Multilib struct {
        First struct {
           Native_shared_libs  []string
        }
    }
}</code>

Why Does It Matter?

Using unexported struct fields prevents the build process from obtaining information using reflection. By exporting the fields, the build process can successfully access and update the native_shared_libs array with the necessary library.

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