diff --git a/cmake/Skate3Version.cmake b/cmake/Skate3Version.cmake
new file mode 100644
index 0000000..a1ca492
--- /dev/null
+++ b/cmake/Skate3Version.cmake
@@ -0,0 +1,76 @@
+function(skate3_compute_version out_var)
+    set(one_value FLOOR_VERSION GIT_DESCRIBE_LONG GIT_DESCRIBE_EXACT)
+    cmake_parse_arguments(ARG "" "${one_value}" "" ${ARGN})
+
+    if(NOT "${ARG_GIT_DESCRIBE_EXACT}" STREQUAL "")
+        if(ARG_GIT_DESCRIBE_EXACT MATCHES "^v([0-9]+\\.[0-9]+(\\.[0-9]+)?(\\.[0-9]+)?(-[0-9A-Za-z][0-9A-Za-z.-]*)?)$")
+            set(${out_var} "${CMAKE_MATCH_1}" PARENT_SCOPE)
+            return()
+        endif()
+        message(FATAL_ERROR "skate3_compute_version: unparseable exact tag '${ARG_GIT_DESCRIBE_EXACT}'")
+    endif()
+
+    if("${ARG_GIT_DESCRIBE_LONG}" STREQUAL "")
+        message(WARNING
+            "skate3_compute_version: no v* tag reachable from HEAD. "
+            "Falling back to ${ARG_FLOOR_VERSION}-dev.unknown. "
+            "For CI release builds, fetch tags and build from a release tag.")
+        set(${out_var} "${ARG_FLOOR_VERSION}-dev.unknown" PARENT_SCOPE)
+        return()
+    endif()
+
+    if(NOT ARG_GIT_DESCRIBE_LONG MATCHES "^v[0-9]+\\.[0-9]+(\\.[0-9]+)?(\\.[0-9]+)?(-[0-9A-Za-z][0-9A-Za-z.-]*)?-([0-9]+)-g([0-9a-f]+)$")
+        message(FATAL_ERROR "skate3_compute_version: unparseable describe output '${ARG_GIT_DESCRIBE_LONG}'")
+    endif()
+
+    set(commit_count ${CMAKE_MATCH_6})
+    set(short_sha ${CMAKE_MATCH_7})
+    set(${out_var} "${ARG_FLOOR_VERSION}.${commit_count}-dev.g${short_sha}" PARENT_SCOPE)
+endfunction()
+
+function(skate3_resolve_version out_var)
+    set(one_value FLOOR_VERSION SOURCE_DIR)
+    cmake_parse_arguments(ARG "" "${one_value}" "" ${ARGN})
+
+    if(NOT ARG_SOURCE_DIR)
+        set(ARG_SOURCE_DIR "${CMAKE_SOURCE_DIR}")
+    endif()
+
+    find_program(GIT_EXECUTABLE git)
+    if(NOT GIT_EXECUTABLE)
+        skate3_compute_version(result
+            FLOOR_VERSION ${ARG_FLOOR_VERSION}
+            GIT_DESCRIBE_LONG ""
+            GIT_DESCRIBE_EXACT "")
+        set(${out_var} "${result}" PARENT_SCOPE)
+        return()
+    endif()
+
+    execute_process(
+        COMMAND ${GIT_EXECUTABLE} describe --tags --exact-match --match "v[0-9]*.[0-9]*"
+        WORKING_DIRECTORY "${ARG_SOURCE_DIR}"
+        OUTPUT_VARIABLE describe_exact
+        ERROR_QUIET
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        RESULT_VARIABLE describe_exact_rc)
+    if(NOT describe_exact_rc EQUAL 0)
+        set(describe_exact "")
+    endif()
+
+    execute_process(
+        COMMAND ${GIT_EXECUTABLE} describe --tags --long --match "v[0-9]*.[0-9]*"
+        WORKING_DIRECTORY "${ARG_SOURCE_DIR}"
+        OUTPUT_VARIABLE describe_long
+        ERROR_QUIET
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        RESULT_VARIABLE describe_long_rc)
+    if(NOT describe_long_rc EQUAL 0)
+        set(describe_long "")
+    endif()
+
+    skate3_compute_version(result
+        FLOOR_VERSION ${ARG_FLOOR_VERSION}
+        GIT_DESCRIBE_LONG "${describe_long}"
+        GIT_DESCRIBE_EXACT "${describe_exact}")
+    set(${out_var} "${result}" PARENT_SCOPE)
+endfunction()
diff --git a/src/skate3_version.h.in b/src/skate3_version.h.in
new file mode 100644
index 0000000..a1ee1c6
--- /dev/null
+++ b/src/skate3_version.h.in
@@ -0,0 +1,14 @@
+#pragma once
+
+// Auto-generated by CMake -- do not edit.
+
+#define SKATE3_VERSION_STRING "@SKATE3_FULL_VERSION@"
+#define SKATE3_VERSION_NUMERIC "@SKATE3_NUMERIC_VERSION@"
+#define SKATE3_BUILD_PLATFORM "@SKATE3_BUILD_PLATFORM@"
+#define SKATE3_BUILD_TIMESTAMP "@SKATE3_BUILD_TIMESTAMP@"
+
+// Requires SKATE3_BUILD_CONFIG compile definition.
+#define SKATE3_BUILD_TITLE "[v" SKATE3_VERSION_STRING "-" SKATE3_BUILD_CONFIG "]"
+#define SKATE3_BUILD_STAMP \
+  "build: skate3-v" SKATE3_VERSION_STRING "-" SKATE3_BUILD_PLATFORM \
+  "-" SKATE3_BUILD_CONFIG "@" SKATE3_BUILD_TIMESTAMP
diff --git a/third_party/rexglue-sdk b/third_party/rexglue-sdk
index 9173ff4..028c1ad 160000
--- a/third_party/rexglue-sdk
+++ b/third_party/rexglue-sdk
@@ -1 +1 @@
-Subproject commit 9173ff4b017a178b6c2433bd925eb96d79dc764d
+Subproject commit 028c1ada911f02d11d08a37ca18e9e99a1f5502e