Adapt Android mobile controls and native client UI

extension/third_party/CMakeLists.txt

@@ -1,9 +1,9 @@
-# extension/third_party — vendored native dependencies for the GDExtension.
+# Vendored native dependencies for the 40250 port and SDL/Vulkan client.
 #
 # Phase 1 (macOS) used Homebrew for libsodium / libzstd / liblzo2. Those don't
 # exist on the Android NDK or iOS SDK sysroots, so the mobile bring-up (BACKLOG
 # F1/F2) needs them built from source as part of our own build. All three are
-# pinned here and produce static libs that link into libmtgodot:
+# pinned here and produce static libraries for port_platform:
 #
 #   sodium          <- libsodium-cmake submodule (wraps jedisct1/libsodium)
 #   libzstd_static  <- facebook/zstd submodule, its own build/cmake project
@@ -13,7 +13,7 @@
 # GPL: fine for this internal, non-published project — same footing as
 # libgr2/src/oodle1.c — but must be swapped or re-licensed before any release.
 
-# Everything here is archived into the SHARED libmtgodot, so it must be PIC.
+# Android links these static libraries into libmain.so, so they must be PIC.
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
 # --- libsodium ------------------------------------------------------------------
@@ -57,7 +57,7 @@ if(WIN32)
 else()
     set(MT_EMBED_PYTHON_DEFAULT ON)
 endif()
-option(MTGODOT_EMBED_PYTHON "Build the embedded CPython 2.7.18 static library" ${MT_EMBED_PYTHON_DEFAULT})
-if(MTGODOT_EMBED_PYTHON)
+option(MT_EMBED_PYTHON "Build the embedded CPython 2.7.18 static library" ${MT_EMBED_PYTHON_DEFAULT})
+if(MT_EMBED_PYTHON)
     add_subdirectory(cpython-2.7.18)
 endif()