Problem during installing and simulation on MacOS

[AllinLeeYL]

Hi!
I encountered a few issues when installing the litex on MacOS. I am listing them here in case someone encountered the same problem as mine and may need a righ away solution. I also hope maybe there could be someone to fix this, or maybe me myself in the future😀.

1. When executing ./litex_setup.py --gcc=riscv on MacOS, get prompt "No formulae or casks found for riscv-tools." My temporary solution is to execute "brew install riscv64-elf-gcc riscv64-elf-binutils" manually.
   Possible once for all solution: Modification on litex_setup.py script will solve this problem. Or refer to https://github.com/riscv-software-src/homebrew-riscv.
2. There is a bug with executing litex_sim, possibily caused by verilator, that whenever I run litex_sim, I get an error prompt:
   dyld[78842]: Library not loaded: @rpath/libz.1.dylib Referenced from: <CAF4FD3A-72E8-39B5-A19B-57912CAAC8E0> /Users/yilin/playground/litex/build/sim/gateware/obj_dir/Vsim Reason: no LC_RPATH's found zsh: abort ./Vsim. My temporary solution is to add export LDFLAGS="${LDFLAGS} -Wl,-rpath,/usr/path-to-where-libz.1.dylib-exists to ~/.zshrc. May someone solve this?

I am using MacOS sequoia 15.7.4, homebew version 5.1.1.