Install Following tools:

• Xcode from app store
• Cmake
• git
• gettext

Cmake, git, gettext can be installed from brew(brew install cmake git gettext)

You need to build the dependence of OrcaSlicer first. (Only needs for the first time)

Suppose you download the codes into /Users/username/work/projects/BambuStudio
create a directory to store the dependence built: /Users/username/work/projects/OrcaSlicer_dep
(Please make sure to replace the username with the one on your computer)

cd BambuStudio/deps
mkdir build;cd build

for arm64 architecture
cmake ../ -DDESTDIR="/Users/username/work/projects/OrcaSlicer_dep" -DOPENSSL_ARCH="darwin64-arm64-cc"
for x86 architeccture
cmake ../ -DDESTDIR="/Users/username/work/projects/OrcaSlicer_dep" -DOPENSSL_ARCH="darwin64-x86_64-cc"
make -jN (N can be a number between 1 and the max cpu number)

create a directory to store the installed files at /Users/username/work/projects/BambuStudio/install_dir
cd BambuStudio
mkdir install_dir
mkdir build;cd build

building it use cmake
cmake .. -DBBL_RELEASE_TO_PUBLIC=1 -DCMAKE_PREFIX_PATH="/Users/username/work/projects/OrcaSlicer_dep/usr/local" -DCMAKE_INSTALL_PREFIX="../install_dir" -DCMAKE_BUILD_TYPE=Release -DCMAKE_MACOSX_RPATH=ON -DCMAKE_INSTALL_RPATH="/Users/username/work/projects/OrcaSlicer_dep/usr/local" -DCMAKE_MACOSX_BUNDLE=on
cmake --build . --target install --config Release -jN

building it use xcode
cmake .. -GXcode -DBBL_RELEASE_TO_PUBLIC=1 -DCMAKE_PREFIX_PATH="/Users/username/work/projects/OrcaSlicer_dep/usr/local" -DCMAKE_INSTALL_PREFIX="../install_dir" -DCMAKE_BUILD_TYPE=Release -DCMAKE_MACOSX_RPATH=ON -DCMAKE_INSTALL_RPATH="/Users/username/work/projects/OrcaSlicer_dep/usr/local" -DCMAKE_MACOSX_BUNDLE=on
then building it using Xcode