diff --git a/extra/llvm/build b/extra/llvm/build
index 270ae643..08e69c4d 100755
--- a/extra/llvm/build
+++ b/extra/llvm/build
@@ -1 +1,16 @@
 #!/bin/sh -e
+
+mkdir -p build
+cd build
+
+cmake \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DLLVM_BUILD_LLVM_DYLIB=ON \
+    -DLLVM_LINK_LLVM_DYLIB=ON \
+    -DLLVM_TARGETS_TO_BUILD="host;X86" \
+    -DLLVM_ENABLE_RTTI=ON \
+    -Wno-dev -G Ninja ..
+
+ninja
+DESTDIR="$1" ninja install
diff --git a/extra/llvm/checksums b/extra/llvm/checksums
new file mode 100644
index 00000000..8398ed02
--- /dev/null
+++ b/extra/llvm/checksums
@@ -0,0 +1 @@
+8872be1b12c61450cacc82b3d153eab02be2546ef34fa3580ed14137bb26224c  llvm-8.0.0.src.tar.xz
diff --git a/extra/llvm/depends b/extra/llvm/depends
index e69de29b..9b10fc98 100644
--- a/extra/llvm/depends
+++ b/extra/llvm/depends
@@ -0,0 +1,2 @@
+cmake  make
+python make