diff --git a/.efrocachemap b/.efrocachemap
index ac242c83..3c3b59f8 100644
--- a/.efrocachemap
+++ b/.efrocachemap
@@ -3940,8 +3940,8 @@
   "build/prefab/mac-server/release/dist/ballisticacore_headless": "https://files.ballistica.net/cache/ba1/44/90/8453cc086294eaf8bd15f4df8332",
   "build/prefab/mac/debug/ballisticacore": "https://files.ballistica.net/cache/ba1/e8/98/2363d625af50c24c6ef3d2e9c58d",
   "build/prefab/mac/release/ballisticacore": "https://files.ballistica.net/cache/ba1/7a/fd/1b7ecd5d084ea0e52974e463b0be",
-  "build/prefab/windows-server/debug/dist/ballisticacore_headless.exe": "https://files.ballistica.net/cache/ba1/1c/76/bb6e52f9bd7d50695d587419f0e4",
-  "build/prefab/windows-server/release/dist/ballisticacore_headless.exe": "https://files.ballistica.net/cache/ba1/74/61/d3c6283c0136cd3036da24ee7857",
-  "build/prefab/windows/debug/BallisticaCore.exe": "https://files.ballistica.net/cache/ba1/dc/56/9638fcadf876b2dc14ae42a4eb13",
-  "build/prefab/windows/release/BallisticaCore.exe": "https://files.ballistica.net/cache/ba1/34/04/47dc06bfb943ef4c41b19394f45a"
+  "build/prefab/windows-server/debug/dist/ballisticacore_headless.exe": "https://files.ballistica.net/cache/ba1/e8/88/8fe7875aa34660db68e74f25051d",
+  "build/prefab/windows-server/release/dist/ballisticacore_headless.exe": "https://files.ballistica.net/cache/ba1/23/2d/8239623b2d8745b4feb4b380b12a",
+  "build/prefab/windows/debug/BallisticaCore.exe": "https://files.ballistica.net/cache/ba1/c3/2f/03140734daf10cd7e46a29c5c820",
+  "build/prefab/windows/release/BallisticaCore.exe": "https://files.ballistica.net/cache/ba1/26/7a/d23e25fdda6f6b1d9ed3b03040b6"
 }
\ No newline at end of file
diff --git a/src/ballistica/config/config_cmake.h b/src/ballistica/config/config_cmake.h
new file mode 100644
index 00000000..c4d71dee
--- /dev/null
+++ b/src/ballistica/config/config_cmake.h
@@ -0,0 +1,77 @@
+// Released under the MIT License. See LICENSE for details.
+
+#ifndef BALLISTICA_CONFIG_CONFIG_CMAKE_H_
+#define BALLISTICA_CONFIG_CONFIG_CMAKE_H_
+
+// For cmake builds, attempt to figure out what architecture we're running on
+// and define stuff accordingly.
+#if __APPLE__
+
+// Yes Apple, I know GL is deprecated. I don't need constant reminders. You're
+// stressing me out.
+#define GL_SILENCE_DEPRECATION
+
+// We currently support regular and client builds on 64 bit mac posix
+#if __amd64__
+#define BA_PLATFORM_STRING "x86_64_macos"
+#else
+#error Unknown processor architecture.
+#endif
+#define BA_OSTYPE_MACOS 1
+#define HAVE_FRAMEWORK_OPENAL 1
+
+#elif __linux__
+
+#if __amd64__
+#define BA_PLATFORM_STRING "x86_64_linux"
+#define BA_OSTYPE_LINUX 1
+#elif __i386__
+#define BA_PLATFORM_STRING "x86_32_linux"
+#define BA_OSTYPE_LINUX 1
+#elif __arm__
+#define BA_PLATFORM_STRING "arm_linux"
+#define BA_OSTYPE_LINUX 1
+
+#else
+#error unknown linux variant
+#endif
+
+#else
+#error config_cmake.h: unknown architecture
+#endif
+
+#define dTRIMESH_ENABLED 1
+
+#if !BA_HEADLESS_BUILD
+#define BA_ENABLE_AUDIO 1
+#define BA_ENABLE_OPENGL 1
+#define BA_SDL_BUILD 1
+#define BA_SDL2_BUILD 1
+#define BA_ENABLE_SDL_JOYSTICKS 1
+#else
+#define BA_MINSDL_BUILD 1
+#endif
+
+// Yup we've got that.
+#define BA_ENABLE_EXECINFO_BACKTRACES 1
+
+// Allow stdin commands too.
+#define BA_USE_STDIN_THREAD 1
+
+#define BA_DEFINE_MAIN 1
+
+#if !BA_DEBUG_BUILD
+
+// Used by ODE.
+#define dNODEBUG 1
+
+// Used by assert.
+#ifndef NDEBUG
+#define NDEBUG
+#endif
+#endif  // !BA_DEBUG_BUILD
+
+// This must always be last.
+#include "ballistica/config/config_common.h"
+
+#endif  // BALLISTICA_CONFIG_CONFIG_CMAKE_H_
diff --git a/src/ballistica/config/config_common.h b/src/ballistica/config/config_common.h
new file mode 100644
index 00000000..ef5197f7
--- /dev/null
+++ b/src/ballistica/config/config_common.h
@@ -0,0 +1,258 @@
+// Released under the MIT License. See LICENSE for details.
+
+#ifndef BALLISTICA_CONFIG_CONFIG_COMMON_H_
+#define BALLISTICA_CONFIG_CONFIG_COMMON_H_
+
+#ifdef __cplusplus
+
+#include <cstdint>
+#include <cstdlib>
+
+// This header should be included at the very END of each platform config
+// header that will be directly used by a build.
+namespace ballistica {
+
+// Default definitions for various things. Per-platform configs
+// can override any of these before this is included.
+
+#ifndef BA_STAT
+#define BA_STAT stat
+#endif
+
+#ifndef BA_OSTYPE_WINDOWS
+#define BA_OSTYPE_WINDOWS 0
+#endif
+
+// Are we building for macOS?
+#ifndef BA_OSTYPE_MACOS
+#define BA_OSTYPE_MACOS 0
+#endif
+
+// Are we building for iOS? (also covers iPadOS)
+#ifndef BA_OSTYPE_IOS
+#define BA_OSTYPE_IOS 0
+#endif
+
+// Are we building for tvOS?
+#ifndef BA_OSTYPE_TVOS
+#define BA_OSTYPE_TVOS 0
+#endif
+
+// Are we building for iOS OR tvOS?
+#ifndef BA_OSTYPE_IOS_TVOS
+#define BA_OSTYPE_IOS_TVOS 0
+#endif
+
+// Are we building for Android?
+#ifndef BA_OSTYPE_ANDROID
+#define BA_OSTYPE_ANDROID 0
+#endif
+
+// Are we building for Linux?
+#ifndef BA_OSTYPE_LINUX
+#define BA_OSTYPE_LINUX 0
+#endif
+
+// On windows, are we built as a console app (vs a gui app)?
+#ifndef BA_WINDOWS_CONSOLE_BUILD
+#define BA_WINDOWS_CONSOLE_BUILD 1
+#endif
+
+// Does this build support only headless mode?
+#ifndef BA_HEADLESS_BUILD
+#define BA_HEADLESS_BUILD 0
+#endif
+
+// Are we building via an XCode project?
+#ifndef BA_XCODE_BUILD
+#define BA_XCODE_BUILD 0
+#endif
+
+// Is this our android iircade build?
+#ifndef BA_IIRCADE_BUILD
+#define BA_IIRCADE_BUILD 0
+#endif
+
+// Does this build use SDL 1.x? (old mac only)
+#ifndef BA_SDL_BUILD
+#define BA_SDL_BUILD 0
+#endif
+
+// Does this build use SDL 2.x?
+#ifndef BA_SDL2_BUILD
+#define BA_SDL2_BUILD 0
+#endif
+
+// Does this build use our 'min-sdl' types?
+// (basic SDL types we define ourself; no actual SDL dependency)
+#ifndef BA_MINSDL_BUILD
+#define BA_MINSDL_BUILD 0
+#endif
+
+// Is this a debug build?
+#ifndef BA_DEBUG_BUILD
+#define BA_DEBUG_BUILD 0
+#endif
+
+// Is this a test build?
+#ifndef BA_TEST_BUILD
+#define BA_TEST_BUILD 0
+#endif
+
+#ifndef BA_ENABLE_SDL_JOYSTICKS
+#define BA_ENABLE_SDL_JOYSTICKS 0
+#endif
+
+#ifndef BA_USE_ICLOUD
+#define BA_USE_ICLOUD 0
+#endif
+
+#ifndef BA_USE_STORE_KIT
+#define BA_USE_STORE_KIT 0
+#endif
+
+#ifndef BA_USE_GAME_CENTER
+#define BA_USE_GAME_CENTER 0
+#endif
+
+#ifndef BA_PLATFORM_STRING
+#error platform string undefined
+#endif
+
+#ifndef BA_USE_STDIN_THREAD
+#define BA_USE_STDIN_THREAD 0
+#endif
+
+#ifndef BA_HARDWARE_CURSOR
+#define BA_HARDWARE_CURSOR 0
+#endif
+
+#ifndef BA_ENABLE_OS_FONT_RENDERING
+#define BA_ENABLE_OS_FONT_RENDERING 0
+#endif
+
+// Does this build support vr mode? (does not mean vr mode is always on)
+#ifndef BA_VR_BUILD
+#define BA_VR_BUILD 0
+#endif
+
+// Is this the Google VR build? (Cardboard/Daydream)
+#ifndef BA_CARDBOARD_BUILD
+#define BA_CARDBOARD_BUILD 0
+#endif
+
+#ifndef BA_GEARVR_BUILD
+#define BA_GEARVR_BUILD 0
+#endif
+
+#ifndef BA_RIFT_BUILD
+#define BA_RIFT_BUILD 0
+#endif
+
+#ifndef BA_AMAZON_BUILD
+#define BA_AMAZON_BUILD 0
+#endif
+
+#ifndef BA_GOOGLE_BUILD
+#define BA_GOOGLE_BUILD 0
+#endif
+
+#ifndef BA_DEMO_BUILD
+#define BA_DEMO_BUILD 0
+#endif
+
+#ifndef BA_ARCADE_BUILD
+#define BA_ARCADE_BUILD 0
+#endif
+
+#ifndef BA_SOCKET_SEND_DATA_TYPE
+#define BA_SOCKET_SEND_DATA_TYPE uint8_t
+#endif
+
+#ifndef BA_SOCKET_SETSOCKOPT_VAL_TYPE
+#define BA_SOCKET_SETSOCKOPT_VAL_TYPE int
+#endif
+
+#ifndef BA_SOCKET_SEND_LENGTH_TYPE
+#define BA_SOCKET_SEND_LENGTH_TYPE size_t
+#endif
+
+typedef BA_SOCKET_SEND_DATA_TYPE socket_send_data_t;
+typedef BA_SOCKET_SEND_LENGTH_TYPE socket_send_length_t;
+
+bool InlineDebugExplicitBool(bool val);
+
+// Little hack so we avoid 'value is always true/false' and
+// 'code will never/always be run' type warnings when using these in debug
+// builds.
+#if BA_DEBUG_BUILD
+#define EXPBOOL_(val) InlineDebugExplicitBool(val)
+#else
+#define EXPBOOL_(val) val
+#endif
+
+// We define a compile-time value g_config which contains the same config
+// values as our config #defines. We should migrate towards using these values
+// whenever possible instead of #if blocks, which should improve support for
+// code introspection/refactoring tools and type safety while still optimizing
+// out just as nicely as #ifs. (though perhaps should verify that).
+// In an ideal world, we should never use #ifs/#ifdefs outside of the platform
+// subdir or skipping entire files (header guards, gui stuff on headless builds,
+// etc.)
+class BuildConfig {
+ public:
+  const char* platform_string() const { return BA_PLATFORM_STRING; }
+  bool debug_build() const { return EXPBOOL_(BA_DEBUG_BUILD); }
+  bool test_build() const { return EXPBOOL_(BA_TEST_BUILD); }
+  bool headless_build() const { return EXPBOOL_(BA_HEADLESS_BUILD); }
+  bool windows_console_build() const {
+    return EXPBOOL_(BA_WINDOWS_CONSOLE_BUILD);
+  }
+
+  bool sdl_build() const { return EXPBOOL_(BA_SDL_BUILD); }
+  bool sdl2_build() const { return EXPBOOL_(BA_SDL2_BUILD); }
+  bool minsdl_build() const { return EXPBOOL_(BA_MINSDL_BUILD); }
+  bool enable_sdl_joysticks() const {
+    return EXPBOOL_(BA_ENABLE_SDL_JOYSTICKS);
+  }
+
+  bool ostype_windows() const { return EXPBOOL_(BA_OSTYPE_WINDOWS); }
+  bool ostype_macos() const { return EXPBOOL_(BA_OSTYPE_MACOS); }
+  bool ostype_ios() const { return EXPBOOL_(BA_OSTYPE_IOS); }
+  bool ostype_tvos() const { return EXPBOOL_(BA_OSTYPE_TVOS); }
+  bool ostype_ios_tvos() const { return EXPBOOL_(BA_OSTYPE_IOS_TVOS); }
+  bool ostype_android() const { return EXPBOOL_(BA_OSTYPE_ANDROID); }
+  bool ostype_linux() const { return EXPBOOL_(BA_OSTYPE_LINUX); }
+
+  bool xcode_build() const { return EXPBOOL_(BA_XCODE_BUILD); }
+  bool vr_build() const { return EXPBOOL_(BA_VR_BUILD); }
+  bool cardboard_build() const { return EXPBOOL_(BA_CARDBOARD_BUILD); }
+  bool gearvr_build() const { return EXPBOOL_(BA_GEARVR_BUILD); }
+  bool rift_build() const { return EXPBOOL_(BA_RIFT_BUILD); }
+  bool amazon_build() const { return EXPBOOL_(BA_AMAZON_BUILD); }
+  bool google_build() const { return EXPBOOL_(BA_GOOGLE_BUILD); }
+  bool demo_build() const { return EXPBOOL_(BA_DEMO_BUILD); }
+  bool arcade_build() const { return EXPBOOL_(BA_ARCADE_BUILD); }
+  bool iircade_build() const { return EXPBOOL_(BA_IIRCADE_BUILD); }
+
+  bool use_icloud() const { return EXPBOOL_(BA_USE_ICLOUD); }
+  bool use_store_kit() const { return EXPBOOL_(BA_USE_STORE_KIT); }
+  bool use_game_center() const { return EXPBOOL_(BA_USE_GAME_CENTER); }
+  bool use_stdin_thread() const { return EXPBOOL_(BA_USE_STDIN_THREAD); }
+  bool enable_os_font_rendering() const {
+    return EXPBOOL_(BA_ENABLE_OS_FONT_RENDERING);
+  }
+  bool hardware_cursor() const { return EXPBOOL_(BA_HARDWARE_CURSOR); }
+};
+
+#undef EXPBOOL_
+
+constexpr BuildConfig g_buildconfig;
+
+}  // namespace ballistica
+
+#endif  // __cplusplus
+
+#define BA_HAVE_CONFIG
+
+#endif  // BALLISTICA_CONFIG_CONFIG_COMMON_H_