diff --git a/README.md b/README.md
index a851053..5441575 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ poomer-efsw --watchdir:/tmp --ext:zip --ext:bsz
 # Build 
 ```
 workdir/
+├── cmake/ (macos)
 ├── build_engine_sdk/
 ├── oom/
 ├── efsw/
@@ -17,29 +18,35 @@ workdir/
 ```
 
 ## MacOS
-Install Cmake to /Applications
-```
-curl -LO https://github.com/Kitware/CMake/releases/download/v3.31.6/cmake-3.31.6-macos-universal.dmg
-open cmake-3.31.6-macos-universal.dmg
-```
-
-Download SDK for your OS and drag bella_engine_sdk into your workdir. On Windows rename unzipped folder by removing version ie bella_engine_sdk-24.6.0 -> bella_engine_sdk
-
-- [bella_engine_sdk MacOS](https://downloads.bellarender.com/bella_engine_sdk-24.6.0.dmg)
-- [bella_engine_sdk Linux](https://downloads.bellarender.com/bella_engine_sdk-24.6.0.tar.gz)
-- [bella_engine_sdk Win](https://downloads.bellarender.com/bella_engine_sdk-24.6.0.zip)
 
 ```
-mkdir workdir
-cd workdir
-git clone https://github.com/SpartanJ/efsw.git
-mkdir -p efsw/build
-cd efsw/build
-/Applications/CMake.app/Contents/bin/cmake ..
-make -j4
-cd ../..
-git clone https://github.com/oomer/oom.git
-git clone https://github.com/oomer/poomer-efsw.git
+# Install xcode
+xcode-select --install
+
+mkdir workdir && cd workdir
+mkdir cmake efsw poomer-efsw
+
+# Build cmake
+cd cmake
+git clone https://github.com/Kitware/CMake.git .
+./configure
+make -j$(sysctl -n hw.ncpu)
+
+# Build efsw
+cd ../efsw && git clone https://github.com/SpartanJ/efsw.git .
+../cmake/bin/cmake -B ./build
+../cmake/bin/cmake --build ./build -j$(sysctl -n hw.ncpu)
+
+# Get bella sdk
+cd ..
+curl -LO https://downloads.bellarender.com/bella_engine_sdk-25.3.0-macos.zip
+tar -xvf bella_engine_sdk-25.3.0-macos.zip
+
+# Get oom
+git clone https://git.indoodle.com/oomer/oom.git
+
+# Build poomer-efsw
 cd poomer-efsw
-make all -j4
+git clone https://github.com/oomer/poomer-efsw.git .
+make all -j$(sysctl -n hw.ncpu)
 ```