Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

tundra/tools/build-droidian-graphics.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: MPL-2.0
+"""Cross-compile the local, version-pinned GLVND adapter; no system installation."""
+import json
+from pathlib import Path
+import subprocess
+from tundra import ROOT, digest, linker, now, save
+
+
+def main():
+    source = ROOT/'droidian/graphics/egl-config.c'
+    folder = ROOT/'out/droidian-graphics'
+    folder.mkdir(parents=True, exist_ok=True)
+    target = folder/'libEGL_vulpes_hybris.so'
+    command = ['clang','--target=aarch64-linux-gnu',f'--ld-path={linker()}',
+               '-ffreestanding','-fPIC','-shared','-nostdlib','-Os',
+               '-Wall','-Wextra','-Werror','-I/usr/include',str(source),'-o',str(target)]
+    subprocess.run(command, check=True)
+    manifest = json.loads((ROOT/'droidian/graphics/vendor.json').read_text())
+    manifest.update(adapterSha256=digest(target),sourceSha256=digest(source))
+    save(folder/'manifest.json',manifest)
+    save(folder/'build.json',{'recordedAt':now(),'command':command,
+        'compiler':subprocess.check_output(['clang','--version'],text=True).splitlines()[0],
+        'headers':{p:digest(Path('/usr/include')/p) for p in
+            ['glvnd/libeglabi.h','glvnd/GLdispatchABI.h','EGL/egl.h','EGL/eglext.h','EGL/eglplatform.h','KHR/khrplatform.h']},
+        'adapterSha256':digest(target)})
+    print(target)
+
+
+if __name__ == '__main__':
+    main()