static-dynamic-linking

Static Dynamic Linking

• lib — Defines execute function

• host — References execute in source

  • Links to lib statically
  • Provides the execute symbol in its executable binary

• plugin — References execute in source

  • Does not link to lib at all
  • Leaving the execute symbol undefined at compile time.
  • At runtime, execute will be accessible because plugin is loaded into host, gaining access to host's symbols.

• Commands

If you need to have binutils first in your PATH, run: echo 'export PATH="/opt/homebrew/opt/binutils/bin:$PATH"' >> /Users/macbookpro2020/.zshrc

For compilers to find binutils you may need to set: export LDFLAGS="-L/opt/homebrew/opt/binutils/lib" export CPPFLAGS="-I/opt/homebrew/opt/binutils/include"

greadelf gobjdump -p /path/to/app greadelf -p .comment target/debug/echo otool -l target/debug/echo strings target/debug/echo | grep -i gcc strings target/debug/echo | grep -i rustc gobjdump -s -j __TEXT target/debug/echo nm target/debug/echo

otool -l

objdump -j .comment -s

rustup target add x86_64-unknown-linux-gnu cargo build --target x86_64-unknown-linux-gnu dwarfdump target/debug/echo

lldb target/debug/echo image list

nm -a target/debug/echo

dsymutil target/debug/echo

cargo build --profile dev --config profile.dev.debug=0

Links

https://users.rust-lang.org/t/mold-linker-not-working-properly-with-rust/88376 https://stackoverflow.com/questions/67511990/how-to-use-the-mold-linker-with-cargo https://stackoverflow.com/questions/3286675/readelf-like-tool-for-mac-os-x https://stackoverflow.com/questions/68343560/what-linker-was-used-to-build-a-rust-binary

Reference

• GOSIM CHINA 2024 - David Lattimore: Incremental Linking and Hot Code Reloading for Rust