[LLVMdev] Compressing with llvm-ar

[Martinez, Javier E]

Hello,

The documentation for llvm-ar says that option 'z' is used to compressed a file before archiving it. I did some tests with different input files (text and LLVM bitcode) and found the archive to be about the same size as the input. When debugging I found that the compressed flag gets passed to several calls and eventually makes it to Archive::writeMember() but this function doesn't do anything with it.

Is compression working with llvm-ar? Can someone provide an example of how to use it? My command line looks something like llvm-ar rcz [archive_name] [input_file]

Thanks,
Javier

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