Correct Windows build processes

This fixes an issue where the CI-built Windows DLL required the MSYS
`libwinpthread-1.dll` library as a dependency, which it should not have.

.github/workflows/build.yml

@@ -17,6 +17,11 @@ jobs:
         run: |
           cd NativeComponents/
           make
+      - name: Dump Result Dependencies
+        shell: cmd
+        run: |
+          call "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" amd64
+          dumpbin /DEPENDENTS NativeComponents\ImGuizmo-Bridge.dll
       - name: Upload Artifact
         uses: actions/upload-artifact@v3
         with:

NativeComponents/Makefile

@@ -23,9 +23,6 @@ else
 os_target := libImGuizmo-Bridge.so
 endif
 
-ifndef write_file
-$(info Using shell auto-detection to determine the correct commands / args for your shell.)
-$(info (Supply `write_file` and `echo_empty` if generating the license fails))
 ifeq ($(shell echo %COMSPEC%), %COMSPEC%)
 $(info Detected POSIX-compatible shell.)
 write_file := cat
@@ -34,6 +31,14 @@ echo_empty := echo
 define ensure_dir
 	@mkdir -p $(1)
 endef
+
+ifndef STATIC_LIBWINPTHREAD
+ifneq (,$(findstring MSYS_NT,$(shell uname -s)))
+$(info Detected MSYS2 build environment.)
+STATIC_LIBWINPTHREAD=y
+endif
+endif
+
 else
 $(info Detected Windows cmd.exe.)
 write_file := type
@@ -42,10 +47,20 @@ echo_empty := echo.
 define ensure_dir
 	@if not exist "$(1)" ( mkdir "$(1)" )
 endef
+
+ifndef STATIC_LIBWINPTHREAD
+$(info Assuming MSYS2 build environment.)
+$(info Specify STATIC_LIBWINPTHREAD=n if you receive errors regarding 'winpthread'.)
+STATIC_LIBWINPTHREAD=y
+endif
+
 endif
 
+ifeq ($(STATIC_LIBWINPTHREAD),y)
+override CXXLDFLAGS += -Wl,--push-state -Wl,-Bstatic -Wl,--whole-archive -Wl,-lwinpthread -Wl,--pop-state
 endif
 
+
 .PHONY: clean build
 
 IMGUI_OBJS := $(addprefix ImGui/obj/, imgui.o imgui_tables.o imgui_widgets.o imgui_draw.o)