Android source code build/CORE/base_rules.mk error Solution

The following error is reported during launcher Compilation:

Build/CORE/base_rules.mk: 166: *** packages/apps/launcher2/bin: module. Target. Apps. launcher2 already defined by packages/apps/launcher2. Stop.

It is a makefike problem. I searched the internet and commented out the statement that reported an error in. mk,

I tried it and did not report an error, but the modification effect was not displayed at all,

Later, I thought it was probably because I commented out the part of. mk, which resulted in no compilation,

So I removed the comment again and changed it back,

Then let's look at the error message... Bin ?, Isn't it generated after compilation? delete it and try,

After deletion, the result is ready and can be compiled properly.

The solution is to delete the bin folder.