diff --git a/.github/workflows/llvm.yml b/.github/workflows/llvm.yml
index 1a4c7c97..51386cdd 100644
--- a/.github/workflows/llvm.yml
+++ b/.github/workflows/llvm.yml
@@ -45,21 +45,17 @@ jobs:
         shell: powershell
         run: build/intrin.ps1
 
-      - name: Install dependencies
-        shell: bash
-        run: build/build.sh install_tools
-
       - name: Clone LLVM
         shell: bash
-        run: build/premake.sh --file=build/scripts/LLVM.lua clone_llvm
+        run: build/build.sh clone_llvm
           
       - name: Build LLVM
         shell: bash
-        run: build/premake.sh --file=build/scripts/LLVM.lua build_llvm --arch=$PLATFORM
+        run: build/build.sh build_llvm -platform $PLATFORM
 
       - name: Package LLVM
         shell: bash
-        run: build/premake.sh --file=build/scripts/LLVM.lua package_llvm --arch=$PLATFORM
+        run: build/build.sh package_llvm -platform $PLATFORM
 
       - name: 'Upload Artifact'
         uses: actions/upload-artifact@v2
diff --git a/build/build.sh b/build/build.sh
index 9e340583..28b6080d 100755
--- a/build/build.sh
+++ b/build/build.sh
@@ -75,11 +75,6 @@ clean()
   rm -rf $slnpath
 }
 
-download_llvm()
-{
-  $builddir/premake.sh --file=$builddir/scripts/LLVM.lua download_llvm --os=$os --arch=$platform --configuration=$configuration
-}
-
 download_premake()
 {
   premake_dir=$builddir/premake
@@ -99,6 +94,26 @@ download_premake()
   fi
 }
 
+download_llvm()
+{
+  $builddir/premake.sh --file=$builddir/llvm/LLVM.lua download_llvm --os=$os --arch=$platform --configuration=$configuration
+}
+
+clone_llvm()
+{
+  $builddir/premake.sh --file=$builddir/llvm/LLVM.lua clone_llvm --os=$os --arch=$platform --configuration=$configuration
+}
+
+build_llvm()
+{
+  $builddir/premake.sh --file=$builddir/llvm/LLVM.lua build_llvm --os=$os --arch=$platform --configuration=$configuration
+}
+
+package_llvm()
+{
+  $builddir/premake.sh --file=$builddir/llvm/LLVM.lua package_llvm --os=$os --arch=$platform --configuration=$configuration
+}
+
 detect_os()
 {
   case "$(uname -s)" in
@@ -181,6 +196,15 @@ case "$cmd" in
   download_llvm)
     download_llvm
     ;;
+  clone_llvm)
+    clone_llvm
+    ;;
+  build_llvm)
+    build_llvm
+    ;;
+  package_llvm)
+    package_llvm
+    ;;
   install_tools)
     download_premake
     ;;
diff --git a/docs/LLVM.md b/docs/LLVM.md
index cfeebd18..55f039be 100644
--- a/docs/LLVM.md
+++ b/docs/LLVM.md
@@ -21,14 +21,12 @@ Check the official download pages for each project for further instructions:
 2. Navigate to the `<CppSharp>/build` directory
 3. Clone, build and package LLVM with
 ```
-$PREMAKE --file=scripts/LLVM.lua clone_llvm
-$PREMAKE --file=scripts/LLVM.lua build_llvm
-$PREMAKE --file=scripts/LLVM.lua package_llvm
+./build.sh clone_llvm
+./build.sh build_llvm
+./build.sh package_llvm
 ```
 
-`$PREMAKE` should be replaced with `premake5.exe`, `premake5-osx` or `premake5-linux` depending on environment.
-
-You can specify an `--arch=x86` or `--arch=x64` flag to the invocations above to specify an explicit build architecture.  
+You can specify an `--platform=x86` or `--platform=x64` flag to the invocations above to specify an explicit build architecture.  
 
 If the `clone_llvm` step fails, you can try to manually clone LLVM and Clang as explained below.
 You should still run clone_llvm to ensure that you are on the correct revision.