Port SDL3 release scripts to SDL2

[skip ci]

build-scripts/cmake-toolchain-mingw64-i686.cmake

@@ -0,0 +1,18 @@
+set(CMAKE_SYSTEM_NAME Windows)
+set(CMAKE_SYSTEM_PROCESSOR x86)
+
+find_program(CMAKE_C_COMPILER NAMES i686-w64-mingw32-gcc)
+find_program(CMAKE_CXX_COMPILER NAMES i686-w64-mingw32-g++)
+find_program(CMAKE_RC_COMPILER NAMES i686-w64-mingw32-windres windres)
+
+if(NOT CMAKE_C_COMPILER)
+	message(FATAL_ERROR "Failed to find CMAKE_C_COMPILER.")
+endif()
+
+if(NOT CMAKE_CXX_COMPILER)
+	message(FATAL_ERROR "Failed to find CMAKE_CXX_COMPILER.")
+endif()
+
+if(NOT CMAKE_RC_COMPILER)
+        message(FATAL_ERROR "Failed to find CMAKE_RC_COMPILER.")
+endif()

build-scripts/cmake-toolchain-mingw64-x86_64.cmake

@@ -0,0 +1,18 @@
+set(CMAKE_SYSTEM_NAME Windows)
+set(CMAKE_SYSTEM_PROCESSOR x86_64)
+
+find_program(CMAKE_C_COMPILER NAMES x86_64-w64-mingw32-gcc)
+find_program(CMAKE_CXX_COMPILER NAMES x86_64-w64-mingw32-g++)
+find_program(CMAKE_RC_COMPILER NAMES x86_64-w64-mingw32-windres windres)
+
+if(NOT CMAKE_C_COMPILER)
+	message(FATAL_ERROR "Failed to find CMAKE_C_COMPILER.")
+endif()
+
+if(NOT CMAKE_CXX_COMPILER)
+	message(FATAL_ERROR "Failed to find CMAKE_CXX_COMPILER.")
+endif()
+
+if(NOT CMAKE_RC_COMPILER)
+        message(FATAL_ERROR "Failed to find CMAKE_RC_COMPILER.")
+endif()

build-scripts/create-release.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+
+import argparse
+from pathlib import Path
+import logging
+import re
+import subprocess
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def determine_project() -> str:
+    text = (ROOT / "CMakeLists.txt").read_text()
+    match = next(re.finditer(r"project\((?P<project>[a-zA-Z0-9_]+)\s+", text, flags=re.M))
+    project_with_version = match["project"]
+    project, _ = re.subn("([^a-zA-Z_])", "", project_with_version)
+    return project
+
+
+def main():
+    project = determine_project()
+    default_remote = f"libsdl-org/{project}"
+
+    current_commit = subprocess.check_output(["git", "rev-parse", "HEAD"], cwd=ROOT, text=True).strip()
+
+    parser = argparse.ArgumentParser(allow_abbrev=False)
+    parser.add_argument("--ref", required=True, help=f"Name of branch or tag containing release.yml")
+    parser.add_argument("--remote", "-R", default=default_remote, help=f"Remote repo (default={default_remote})")
+    parser.add_argument("--commit", default=current_commit, help=f"Commit (default={current_commit})")
+    args = parser.parse_args()
+
+
+    print(f"Running release.yml workflow:")
+    print(f"  commit = {args.commit}")
+    print(f"  remote = {args.remote}")
+
+    subprocess.check_call(["gh", "-R", args.remote, "workflow", "run", "release.yml", "--ref", args.ref, "-f", f"commit={args.commit}"], cwd=ROOT)
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())