Improvements

[ink-splatters]

Improvements

ditch rm -rf

I was genuinely embarrassed by its effects, so it inspired me for this PR :)

options

the following options implemented:

--no-clean - suppresses everything but the last ./build.sh invocation.
--ninja - sets Ninja as CMake generator. ninja outperforms gnumake at incremental compilation, above all.
--lto - may or may not result in measurable runtime performance gains, and WILL result in build performance loss, so this switch I consider experimental

test

System info:

airstation:tmp ic$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"aarch64-darwin"`
 - host os: `Darwin 23.2.0, macOS 14.2.1`
 - multi-user?: `yes`
 - sandbox: `no`
 - version: `nix-env (Nix) 2.19.2`
 - channels(root): `"nixpkgs"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixpkgs`

airstation:tmp ic$  nix-instantiate --eval '<nixpkgs>' --attr lib.version
"24.05pre561758.d6863cbcbbb8"

build env + build/install

#/bin/bash

pyver=3.1

# no Xcode needed
# llvmPackages_latest pulls clang 16.0.6
nix-shell -p \
      micromamba \
      llvmPackages_latest.stdenv \ 
      cmake \
      ninja \
      iconv \
      darwin.apple_sdk.frameworks.Foundation \
      darwin.apple_sdk.frameworks.CoreML

alias m=micromamba

eval "$(m shell hook --shell bash)"

m env create -n onnx-rt
m activate onnx-rt
m install python=$pyver
pip install -U pip wheel

./build-mac.sh --lto --ninja

pip install dist/*.whl

roadmap [maybe]

• linking using lld
• nix flake for build env

[cansik]

Thanks for your contribution, it seems to look good. I am still doing some tests, because I couldn't build it yet, but I guess something has changed on my build system and it is not script related.