diff --git a/docs/how/cmake_bgfx/cmake/CMakeTSLANGInformation.cmake b/docs/how/cmake_bgfx/cmake/CMakeTSLANGInformation.cmake
index d672c2268..814189e19 100644
--- a/docs/how/cmake_bgfx/cmake/CMakeTSLANGInformation.cmake
+++ b/docs/how/cmake_bgfx/cmake/CMakeTSLANGInformation.cmake
@@ -1,15 +1,13 @@
 # bx propagates -msse4.2 via PUBLIC compile options on GCC/Clang. tslang does
-# not accept those flags, so filter them through a small wrapper on Unix.
+# not accept those flags, so filter them through a small portable wrapper
+# invoked via `cmake -P` (works the same under Ninja on Windows and Unix,
+# unlike a #!/usr/bin/env bash script which Ninja cannot exec on Windows).
 get_filename_component(_TSLANG_CMAKE_DIR "${CMAKE_CURRENT_LIST_FILE}" DIRECTORY)
 set(_TSLANG_COMPILE_TEMPLATE
     "<CMAKE_TSLANG_COMPILER> <FLAGS> --default-lib-path=${CMAKE_TSLANG_DIR} --emit=obj --export=none -o=<OBJECT> <SOURCE>")
 if(NOT CMAKE_TSLANG_COMPILE_OBJECT)
-    if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang|AppleClang")
-        set(CMAKE_TSLANG_COMPILE_OBJECT
-            "${_TSLANG_CMAKE_DIR}/tslang_compile.sh ${_TSLANG_COMPILE_TEMPLATE}")
-    else()
-        set(CMAKE_TSLANG_COMPILE_OBJECT "${_TSLANG_COMPILE_TEMPLATE}")
-    endif()
+    set(CMAKE_TSLANG_COMPILE_OBJECT
+        "\"${CMAKE_COMMAND}\" -P \"${_TSLANG_CMAKE_DIR}/tslang_filter_flags.cmake\" -- ${_TSLANG_COMPILE_TEMPLATE}")
 endif()
 
 if(NOT CMAKE_TSLANG_LINK_EXECUTABLE)
diff --git a/docs/how/cmake_bgfx/cmake/LocateTSLang.cmake b/docs/how/cmake_bgfx/cmake/LocateTSLang.cmake
index 2984d8e5e..02e19f3ca 100644
--- a/docs/how/cmake_bgfx/cmake/LocateTSLang.cmake
+++ b/docs/how/cmake_bgfx/cmake/LocateTSLang.cmake
@@ -113,10 +113,16 @@ function(setup_tslang_link_paths)
         message(FATAL_ERROR "setup_tslang_link_paths: TSLANG_PREFIX is not set")
     endif()
 
+    if(CMAKE_BUILD_TYPE STREQUAL "Release")
+        set(_defaultlib_config "release")
+    else()
+        set(_defaultlib_config "debug")
+    endif()
+
     set(_link_dirs
         "${TSLANG_BIN_DIR}"
         "${TSLANG_PREFIX}/lib"
-        "${TSLANG_BIN_DIR}/defaultlib/lib")
+        "${TSLANG_BIN_DIR}/defaultlib/lib/${_defaultlib_config}")
 
     if(TSLANG_ROOT)
         if(EXISTS "${TSLANG_ROOT}/gc/release")
diff --git a/docs/how/cmake_bgfx/cmake/tslang_compile.sh b/docs/how/cmake_bgfx/cmake/tslang_compile.sh
deleted file mode 100755
index a5311ee48..000000000
--- a/docs/how/cmake_bgfx/cmake/tslang_compile.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/usr/bin/env bash
-# Filter C++ CPU flags that linked targets (bx/bgfx) export via PUBLIC
-# compile options. tslang does not accept those flags.
-set -euo pipefail
-
-filtered=()
-for arg in "$@"; do
-    case "${arg}" in
-        -msse4.2|-msse4.1|-mavx|-mavx2) ;;
-        *) filtered+=("${arg}") ;;
-    esac
-done
-
-exec "${filtered[@]}"
diff --git a/docs/how/cmake_bgfx/cmake/tslang_filter_flags.cmake b/docs/how/cmake_bgfx/cmake/tslang_filter_flags.cmake
new file mode 100644
index 000000000..aca77c62c
--- /dev/null
+++ b/docs/how/cmake_bgfx/cmake/tslang_filter_flags.cmake
@@ -0,0 +1,34 @@
+# Filter C++ CPU flags that linked targets (bx/bgfx) export via PUBLIC
+# compile options. tslang does not accept those flags.
+#
+# Invoked as:
+#   cmake -P tslang_filter_flags.cmake -- <compiler> <args...>
+#
+# Everything after the literal "--" argument is forwarded, with the
+# blocked flags removed, to COMMAND.
+#
+# Note: CMAKE_ARGV<n> is indexed access (CMAKE_ARGC gives the count); there
+# is no plain CMAKE_ARGV list variable.
+
+set(_args)
+set(_seen_dashdash FALSE)
+math(EXPR _last "${CMAKE_ARGC} - 1")
+foreach(_i RANGE 0 ${_last})
+    set(_raw_arg "${CMAKE_ARGV${_i}}")
+    if(NOT _seen_dashdash)
+        if(_raw_arg STREQUAL "--")
+            set(_seen_dashdash TRUE)
+        endif()
+        continue()
+    endif()
+
+    if(_raw_arg MATCHES "^-m(sse4\\.2|sse4\\.1|avx|avx2)$")
+        continue()
+    endif()
+    list(APPEND _args "${_raw_arg}")
+endforeach()
+
+execute_process(COMMAND ${_args} RESULT_VARIABLE _result)
+if(NOT _result EQUAL 0)
+    message(FATAL_ERROR "tslang compile failed (exit ${_result})")
+endif()
diff --git a/tag.bat b/tag.bat
index 85f68390f..4f32103cd 100644
--- a/tag.bat
+++ b/tag.bat
@@ -1,2 +1,2 @@
-git tag -a v0.0-pre-alpha78 -m "pre alpha v0.0-78"
+git tag -a v0.0-pre-alpha79 -m "pre alpha v0.0-79"
 git push origin --tags
diff --git a/tag_del.bat b/tag_del.bat
index 190fcbad4..ef9b0ec47 100644
--- a/tag_del.bat
+++ b/tag_del.bat
@@ -1,2 +1,2 @@
-git push --delete origin v0.0-pre-alpha78
-git tag -d v0.0-pre-alpha78
+git push --delete origin v0.0-pre-alpha79
+git tag -d v0.0-pre-alpha79