[llvm-dev] RFC: Contributing bitcode_strip

James Henderson via llvm-dev llvm-dev at lists.llvm.org
Fri Aug 21 03:04:32 PDT 2020

No issues from me in adding it, though I don't know anything about the tool
itself. Would it make sense to integrate this fully into llvm-strip's
interface (so that llvm-strip can do strip and bitcode_strip things by
default)? Are the two sufficiently compatible? You could then have a
bitcode_strip symlink when creating cctools symlinks, much like there
exists already for the other tools.

On Fri, 21 Aug 2020 at 05:03, Alexander Shaposhnikov via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> *bitcode_strip* is a utility which is used to manipulate (leave / remove)
> bitcode segments in a Mach-O file. It is a part of Apple’s cctools and it
> is also distributed with Xcode.
> The man page of the tool is available here
> https://www.manpagez.com/man/1/bitcode_strip/.
> The functionality of *bitcode_strip* naturally maps onto llvm-objcopy’s
> model and requires only minimal additions to it.
> Therefore, similarly to llvm-strip and llvm-install-name-tool *we propose
> adding a new driver  to llvm-objcopy (for Mach-O) with the goal to make it
> a drop-in replacement for cctools’ bitcode_strip*. Among other benefits
> this approach enables us to save space in toolchain distributions (no extra
> binaries added) and reuse some llvm-objcopy’s features.
> We already have llvm-lipo, llvm-install-name-tool, llvm-strip,
> llvm-libtool-darwin and llvm-bitcode-strip appears to be one of the last
> missing tools commonly used for Mach-O.
> Any feedback / comments / suggestions would be greatly appreciated.
> Kind regards,
> Alexander Shaposhnikov
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> llvm-dev at lists.llvm.org
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