Index: Makefile.in
--- Makefile.in.orig
+++ Makefile.in
@@ -380,7 +380,7 @@ mod_virtualpg_la_SOURCES = virtualpg.c
 mod_virtualpg_la_CPPFLAGS = @CFLAGS@ @CPPFLAGS@ @PG_CFLAGS@ \
 	-DLOADABLE_EXTENSION
 mod_virtualpg_la_LIBTOOLFLAGS = --tag=disable-static
-@MINGW_FALSE@mod_virtualpg_la_LDFLAGS = -module -version-info 1:1:1 \
+@MINGW_FALSE@mod_virtualpg_la_LDFLAGS = -module -avoid-version \
 @MINGW_FALSE@	@PG_LDFLAGS@ @PG_LIB@ $(am__empty)
 @MINGW_TRUE@mod_virtualpg_la_LDFLAGS = -module -avoid-version \
 @MINGW_TRUE@	-no-undefined @PG_LDFLAGS@ @PG_LIB@