diff -rupN --no-dereference djvulibre-3.5.27/libdjvu/Makefile.am djvulibre-3.5.27-new/libdjvu/Makefile.am
--- djvulibre-3.5.27/libdjvu/Makefile.am	2015-02-11 04:02:19.000000000 +0100
+++ djvulibre-3.5.27-new/libdjvu/Makefile.am	2019-11-13 19:42:14.723650801 +0100
@@ -33,6 +33,8 @@ libdjvulibre_la_LIBADD = $(JPEG_LIBS) $(
 libdjvulibre_la_LDFLAGS = -no-undefined -version-info $(version_info)
 
 if HAVE_OS_WIN32
+libdjvulibre_la_CPPFLAGS += -DDJVUAPI_EXPORT 
+libdjvulibre_la_CPPFLAGS += -DDDJVUAPI_EXPORT -DMINILISPAPI_EXPORT
 libdjvulibre_la_LDFLAGS += -Wl,--export-all-symbols
 endif