diff -Nru orig/gpg/src/Makevars.ucrt patched/gpg/src/Makevars.ucrt
--- orig/gpg/src/Makevars.ucrt	1970-01-01 01:00:00.000000000 +0100
+++ patched/gpg/src/Makevars.ucrt	2021-02-17 19:45:40.552253000 +0100
@@ -0,0 +1,10 @@
+PKG_LIBS = \
+	-lgpgme -lassuan -lgpg-error -lws2_32
+
+PKG_CPPFLAGS= \
+	-DHAVE_GPGME_IO_READWRITE
+
+all: clean
+
+clean:
+	rm -f $(SHLIB) $(OBJECTS)