diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..aed4e6e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+# ignore the llvm-project tarballs and files
+llvm-project*
+llvm-*
diff --git a/build.py b/build.py
new file mode 100644
index 0000000..058610e
--- /dev/null
+++ b/build.py
@@ -0,0 +1,106 @@
+import argparse
+import subprocess
+import os
+
+# Constants for configuration
+COMMON_CMAKE_ARGS = '-DBUILD_SHARED_LIBS=OFF -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra"'
+MACOS_CMAKE_ARGS = '-DCMAKE_BUILD_TYPE=MinSizeRel -DCMAKE_CXX_COMPILER=g++-11 -DCMAKE_C_COMPILER=gcc-11 -DZSTD_STATIC_LINKING_ONLY=1'
+LINUX_CMAKE_ARGS = '-DCMAKE_BUILD_TYPE=MinSizeRel -DCMAKE_CXX_COMPILER=g++-10 -DCMAKE_C_COMPILER=gcc-10'
+
+BUILD_CONFIG = {
+    "linux": {
+        "cmake_args": f"-DLLVM_BUILD_STATIC=ON -DCMAKE_CXX_FLAGS=\"-s -flto\" {LINUX_CMAKE_ARGS}",
+        "build_args": "-j$(nproc)",
+        "bindir": "/build/bin",
+        "dotexe": "",
+        "shacmd": "sha512sum"
+    },
+    "macosx": {
+        "cmake_args": f"-DCMAKE_CXX_FLAGS=\"-static-libgcc -static-libstdc++ -flto -ffunction-sections -fdata-sections\" -DCMAKE_OSX_DEPLOYMENT_TARGET=11 {MACOS_CMAKE_ARGS}",
+        "build_args": "-j$(sysctl -n hw.ncpu)",
+        "bindir": "/build/bin",
+        "dotexe": "",
+        "shacmd": "shasum -a512"
+    },
+    "windows": {
+        "cmake_args": "-Thost=x64 -DCMAKE_CXX_FLAGS=\"/MP /std:c++14\" -DLLVM_USE_CRT_MINSIZEREL=\"MT\"",
+        "build_args": "--config MinSizeRel",
+        "bindir": "/build/MinSizeRel/bin",
+        "dotexe": ".exe",
+        "shacmd": "sha512sum.exe"
+    }
+}
+
+PLATFORMS = ["linux", "macosx", "windows"]
+
+VERSION_TAG_MAPPING = {
+    "7": "7.0.1",
+    "8": "8.0.1",
+    "9": "9.0.1",
+    "10": "10.0.1",
+    "11": "11.0.1",
+    "12": "12.0.1",
+    "13": "13.0.1",
+    "14": "14.0.1",
+    "15": "15.0.1",
+    "16": "16.0.1",
+    "17": "17.0.1",
+    "18": "18.1.8",
+    "19": "19.1.7"
+}
+RELEASE_URL = "https://github.com/llvm/llvm-project/releases/download"
+
+def get_llvm_project(version, tag):
+    print(f"Getting llvm-project for version {version}...")
+    print(f"{RELEASE_URL}/llvmorg-{tag}/llvm-project-{tag}.src.tar.xz")
+
+    if version in ["7", "8"]:
+        subprocess.run(f"curl -LO {RELEASE_URL}/llvmorg-{tag}/llvm-{tag}.src.tar.xz", shell=True, check=True)
+        subprocess.run(f"curl -LO {RELEASE_URL}/llvmorg-{tag}/cfe-{tag}.src.tar.xz", shell=True, check=True)
+        subprocess.run(f"curl -LO {RELEASE_URL}/llvmorg-{tag}/clang-tools-extra-{tag}.src.tar.xz", shell=True, check=True)
+    else:
+        subprocess.run(f"curl -LO {RELEASE_URL}/llvmorg-{tag}/llvm-project-{tag}.src.tar.xz", shell=True, check=True)
+
+def unpack_llvm_project(version, tag):
+    print(f"Unpacking llvm-project for version {version}...")
+    if version in ["7", "8"]:
+        subprocess.run(f"tar xf llvm-{tag}.src.tar.xz", shell=True, check=True)
+        subprocess.run(f"tar xf cfe-{tag}.src.tar.xz", shell=True, check=True)
+        subprocess.run(f"tar xf clang-tools-extra-{tag}.src.tar.xz", shell=True, check=True)
+    else:
+        subprocess.run(f"tar xf llvm-project-{tag}.src.tar.xz", shell=True, check=True)
+
+def build_project(version, platform):
+    config = BUILD_CONFIG[platform]
+    cmake_args = config["cmake_args"]
+    build_args = config["build_args"]
+
+    print(f"Building LLVM project version {version} on platform {platform}...")
+    os.makedirs(f"llvm-{version}/build", exist_ok=True)
+    subprocess.run(f"cmake -S llvm-{version} -B llvm-{version}/build {COMMON_CMAKE_ARGS} {cmake_args}", shell=True, check=True)
+    subprocess.run(f"cmake --build llvm-{version}/build {build_args}", shell=True, check=True)
+
+def main():
+    parser = argparse.ArgumentParser(description="Build LLVM for multiple versions and platforms.")
+    parser.add_argument("-v", "--version", nargs="*", help="Specify LLVM versions to build.")
+    parser.add_argument("-p", "--platform", nargs="*", choices=PLATFORMS, help="Specify platforms to build for.")
+    
+    args = parser.parse_args()
+    versions = args.version or sorted(VERSION_TAG_MAPPING.keys(), key=int)
+    platforms = args.platform or PLATFORMS
+
+    for version in versions:
+        if version not in VERSION_TAG_MAPPING:
+            print(f"Skipping unknown version: {version}")
+            continue
+
+        tag = VERSION_TAG_MAPPING[version]
+        for version in versions:
+            # release = f"llvm-project-{tag}.src"
+            get_llvm_project(version, tag)
+            unpack_llvm_project(version, tag)
+            for platform in platforms:
+                build_project(version, platform)
+
+if __name__ == "__main__":
+    main()