[LLVMdev] Using thin archives when building llvm (original) (raw)

Rafael Espíndola rafael.espindola at gmail.com
Wed Jul 15 18:00:52 PDT 2015

I have just committed support to llvm-ar for creating thin archives. The idea of thin archives is that they contain just the symbol table and the path to find the original .o files.

By locally making thin archives the default I was able to build llvm+lld+clang with them. The total size of the .a files goes from 181,658,164 to 7,116,900 bytes.

Is there any way to do that with cmake without having to have a hacked llvm-ar? All that is needed is for cmake to run

.../llvm-ar cqT foo.a ....

instead of

.../llvm-ar cq foo.a ....

Thanks, Rafael

More information about the llvm-dev mailing list