Source: https://github.com/keystone-engine/keystone/archive/0.9.2.tar.gz

Config:

Alter make-share.sh's make line to generate an Xcode project:

cmake -DBUILD_LIBS_ONLY=$BUILD_LIBS_ONLY -DLLVM_BUILD_32_BITS="$LLVM_BUILD_32_BITS" -DCMAKE_OSX_ARCHITECTURES="arm64" -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=ON -DLLVM_TARGETS_TO_BUILD="AArch64" -G "Xcode" ..

cd keystone-0.9.2
mkdir build
cd build
../make-share.sh

Open Xcode project
Go to keystone library target
Change architectures to Standard Architectures
Change deployment target to 10.11
Modify scheme to use MinSizeRel
Build

Include headers from include/keystone/
