Simplify build setup by adding a setup script

2026-07-07 13:23:40 -04:00 · 2021-07-22 02:00:20 +02:00
parent 8cf3dd776b
commit 5d7fa0aede
2 changed files with 131 additions and 22 deletions
@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+
+import os
+import platform
+from pathlib import Path
+import sys
+import tarfile
+import tempfile
+import urllib.request
+
+ROOT = Path(__file__).parent.parent
+
+
+def fail(error: str):
+    print(error)
+    sys.exit(1)
+
+
+def set_up_compiler():
+    compiler_dir = ROOT / "toolchain" / "clang"
+    if compiler_dir.is_dir():
+        print("clang is already set up: nothing to do")
+        return
+
+    system = platform.system()
+    machine = platform.machine()
+
+    builds = {
+        # Linux
+        ("Linux", "x86_64"): {
+            "url": "https://releases.llvm.org/4.0.1/clang+llvm-4.0.1-x86_64-linux-gnu-Fedora-25.tar.xz",
+            "dir_name": "clang+llvm-4.0.1-x86_64-linux-gnu-Fedora-25",
+        },
+        ("Linux", "aarch64"): {
+            "url": "https://releases.llvm.org/4.0.1/clang+llvm-4.0.1-aarch64-linux-gnu.tar.xz",
+            "dir_name": "clang+llvm-4.0.1-aarch64-linux-gnu",
+        },
+
+        # macOS
+        ("Darwin", "x86_64"): {
+            "url": "https://releases.llvm.org/4.0.1/clang+llvm-4.0.1-x86_64-apple-darwin.tar.xz",
+            "dir_name": "clang+llvm-4.0.1-x86_64-apple-darwin",
+        },
+        ("Darwin", "aarch64"): {
+            "url": "https://releases.llvm.org/4.0.1/clang+llvm-4.0.1-x86_64-apple-darwin.tar.xz",
+            "dir_name": "clang+llvm-4.0.1-x86_64-apple-darwin",
+        },
+    }
+
+    build_info = builds.get((system, machine))
+    if build_info is None:
+        fail(
+            f"unknown platform: {platform.platform()} (please report if you are on Linux and macOS)")
+
+    url: str = build_info["url"]
+    dir_name: str = build_info["dir_name"]
+
+    print(f"downloading Clang from {url}...")
+    with tempfile.TemporaryDirectory() as tmpdir:
+        path = tmpdir + "/" + url.split("/")[-1]
+        urllib.request.urlretrieve(url, path)
+
+        print(f"extracting Clang...")
+        with tarfile.open(path) as f:
+            f.extractall(compiler_dir.parent)
+            (compiler_dir.parent / dir_name).rename(compiler_dir)
+
+    print(">>> successfully set up Clang")
+
+
+def create_build_dir():
+    build_dir = ROOT / "build"
+    if build_dir.is_dir():
+        print("build directory already exists: nothing to do")
+        return
+
+    os.system("cmake -GNinja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_TOOLCHAIN_FILE=toolchain/ToolchainNX64.cmake -DCMAKE_CXX_COMPILER_LAUNCHER=ccache -B build/")
+    print(">>> created build directory")
+
+
+def main():
+    set_up_compiler()
+    create_build_dir()
+
+
+if __name__ == "__main__":
+    main()