This is what I find on my Fedora 34 mingw install.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 qga/installer/qemu-ga.wxs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/qga/installer/qemu-ga.wxs b/qga/installer/qemu-ga.wxs
index 9cb4c3d73302..ce7b25b5e16f 100644
--- a/qga/installer/qemu-ga.wxs
+++ b/qga/installer/qemu-ga.wxs
@@ -31,7 +31,7 @@
   <?endif?>

   <?if $(var.Arch) = "32"?>
-    <?define ArchLib=libgcc_s_sjlj-1.dll?>
+    <?define ArchLib=libgcc_s_dw2-1.dll?>
     <?define GaProgramFilesFolder="ProgramFilesFolder" ?>
   <?endif?>

In theory, all you need is: "<?require $DEP.wxi?>" at the top level, and reference the component group "<ComponentGroupRef Id="CG.$DEP"/>"

That's how we handle the dozens for dependencies in virt-viewer/spice.