Add support for zstd compressed debug sections (#318)

google / bloaty

Bloaty: a size profiler for binaries

Apache License 2.0

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Add support for zstd compressed debug sections (#318) #364

Open EricRahm opened 10 months ago

EricRahm commented 10 months ago

Add support for processing zstd compressed debug sections. lld and associated tools now support using zstd in addition to zlib for debug info compression, for example:

clang++ -gz=zstd foo.cc

clang++ -shared -W,--compress-debug-sections=zstd foo.cc

llvm-objcopy --compress-debug-sections=zstd foo.o foo-compressed.o

This CL:

Adds a dependency on zstd
Handles the ELFCOMPRESS_ZSTD ch_type flag
Uses zstd to decompress sections marked with ELFCOMPRESS_ZSTD

EricRahm commented 10 months ago

@haberman Mind taking a look? This doesn't have the cmake hooks, but that's a bit out of my wheelhouse and. cc @walkingeyerobot

piwicode commented 5 months ago

@haberman This change enables to inspect Fuchsia OS project binaries.