[ci] Build win64 binaries as well
diff --git a/.ci/build-win64.sh b/.ci/build-win64.sh
new file mode 100644
index 0000000..652410a
--- /dev/null
+++ b/.ci/build-win64.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+set -e
+
+meson --cross-file=.ci/win64-cross-file.txt \
+ --wrap-mode=forcefallback \
+ --buildtype=release \
+ -Dtests=disabled \
+ -Dcairo=enabled \
+ -Dcairo:fontconfig=disabled \
+ -Dglib=enabled \
+ -Dfreetype=enabled \
+ -Dgdi=enabled \
+ -Ddirectwrite=enabled \
+ -Dcairo=enabled \
+ win64build \
+ $@
+
+ninja -Cwin64build -j3 # building with all the cores won't work fine with CricleCI for some reason
+
+rm -rf win64build/harfbuzz-win64
+mkdir win64build/harfbuzz-win64
+cp win64build/util/hb-*.exe win64build/harfbuzz-win64
+find win64build -name '*.dll' -exec cp {} win64build/harfbuzz-win64 \;
+x86_64-w64-mingw32-strip win64build/harfbuzz-win64/*.{dll,exe}
+rm -f harfbuzz-win64.zip
+(cd win64build && zip -r ../harfbuzz-win64.zip harfbuzz-win64)
+echo "harfbuzz-win64.zip is ready."
