如何告诉 Proguard 避免混淆 JNA 库类？

Question

In other words: what -keep commands should I use to tell Proguard to avoid obfuscating my classes that represent native libraries? (since JNA requires that the names match the equivalent native function, struct, etc.)

Answer 1

This is the rule I'm using for now:

-keepclassmembers class * extends com.sun.jna.** {
    <fields>;
    <methods>;
}

I still think there might be a better way to do it though.

Answer 2

For me worked as well

-keep class com.sun.jna.** { *; }
-keep class * implements com.sun.jna.** { *; }

Answer 3

I think I solved it using these rules instead, because it seems they need everything of the package to be de-obfuscated:

-keep class com.sun.jna.** { *; }
-keep class * implements com.sun.jna.** { *; }

Answer 4

JNA by default uses Library interface method names to look up native function names. Anything other than those should be able to withstand obfuscation.

If your tests include coverage of all JNA calls then you should be able to test this almost as fast as asking the question here.

EDIT

Consider this a comment, since I'm not prepared to offer "-keep" commands :)

You certainly must avoid elimination or reordering of any Structure fields.