diff -ur libgsf-1.14.27-orig/configure libgsf-1.14.27/configure
--- libgsf-1.14.27-orig/configure	2013-06-23 12:50:43 -0400
+++ libgsf-1.14.27/configure	2013-07-12 23:44:33 -0400
@@ -14191,7 +14191,11 @@
 for try in 1 2; do
 	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
+#ifdef _MSC_VER
+#include <winsock2.h>
+#else
 #include <sys/time.h>
+#endif
 int
 main ()
 {
diff -ur libgsf-1.14.27-orig/dumpdef.pl libgsf-1.14.27/dumpdef.pl
--- libgsf-1.14.27-orig/dumpdef.pl	2009-05-18 21:55:48 -0400
+++ libgsf-1.14.27/dumpdef.pl	2013-07-13 00:13:39 -0400
@@ -43,7 +43,7 @@
     while ($lines =~ /^\s*extern\s+ #function type
 		      [A-Za-z_]\w*(?:[\s\*]+[A-Za-z_]\w*)*[\s\*]+([A-Za-z_]\w*) #[first arg
 		      \s*(?:\[\s*\]\s*)?;/gxm) {
-	push @symbols, "$1 DATA";
+	push @symbols, $1;
     }
     @symbols;
 }
diff -ur libgsf-1.14.27-orig/gsf/Makefile.in libgsf-1.14.27/gsf/Makefile.in
--- libgsf-1.14.27-orig/gsf/Makefile.in	2013-06-23 12:50:44 -0400
+++ libgsf-1.14.27/gsf/Makefile.in	2013-07-13 00:12:49 -0400
@@ -350,7 +350,8 @@
 top_srcdir = @top_srcdir@
 AM_CPPFLAGS = -I$(top_srcdir) $(LIBGSF_CFLAGS) \
 	$(Z_CPPFLAGS) \
-	-DGSFLOCALEDIR=\"$(datadir)/locale\"
+	-DGSFLOCALEDIR=\"$(datadir)/locale\" \
+	-DBUILDING_LIBGSF
 
 lib_LTLIBRARIES = libgsf-1.la
 CLEANFILES = $(am__append_1) $(am__append_3) $(am__append_5)
@@ -482,8 +483,8 @@
 
 CPP_CFLAGS = -DGLIB_CHECK_VERSION\(x,y,z\)
 LIB_PUBLIC_HDRS = $(libgsf_1_include_HEADERS)
-@HAVE_LIBEXE_TRUE@gsf_mslibdir = $(DESTDIR)$(libdir)
-@HAVE_LIBEXE_TRUE@gsf_mslib_DATA = gsf-1.lib
+@HAVE_LIBEXE_TRUE@#gsf_mslibdir = $(DESTDIR)$(libdir)
+@HAVE_LIBEXE_TRUE@#gsf_mslib_DATA = gsf-1.lib
 @HAVE_INTROSPECTION_TRUE@Gsf_1_gir_INCLUDES = GObject-2.0 Gio-2.0 libxml2-2.0
 @HAVE_INTROSPECTION_TRUE@Gsf_1_gir_CFLAGS = $(AM_CPPFLAGS)
 @HAVE_INTROSPECTION_TRUE@Gsf_1_gir_LIBS = libgsf-1.la
diff -ur libgsf-1.14.27-orig/gsf/gsf-fwd.h libgsf-1.14.27/gsf/gsf-fwd.h
--- libgsf-1.14.27-orig/gsf/gsf-fwd.h	2013-02-23 14:06:49 -0500
+++ libgsf-1.14.27/gsf/gsf-fwd.h	2013-07-13 00:09:36 -0400
@@ -25,6 +25,12 @@
 #include <glib.h>
 #include <glib-object.h>
 
+#if defined(_MSC_VER) && !defined(BUILDING_LIBGSF)
+#  define LIBGSF_EXTERN extern __declspec(dllimport)
+#else
+#  define LIBGSF_EXTERN extern
+#endif
+
 G_BEGIN_DECLS
 
 /**
diff -ur libgsf-1.14.27-orig/gsf/gsf-input-memory.c libgsf-1.14.27/gsf/gsf-input-memory.c
--- libgsf-1.14.27-orig/gsf/gsf-input-memory.c	2013-03-08 21:46:57 -0500
+++ libgsf-1.14.27/gsf/gsf-input-memory.c	2013-07-13 00:18:03 -0400
@@ -36,6 +36,10 @@
 #include <io.h>
 #include <fcntl.h>
 
+#ifndef S_ISREG
+#  define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
+#endif
+
 #define MAP_FAILED NULL
 #endif
 
diff -ur libgsf-1.14.27-orig/gsf/gsf-input-stdio.c libgsf-1.14.27/gsf/gsf-input-stdio.c
--- libgsf-1.14.27-orig/gsf/gsf-input-stdio.c	2013-03-08 21:46:57 -0500
+++ libgsf-1.14.27/gsf/gsf-input-stdio.c	2013-07-13 00:17:57 -0400
@@ -32,6 +32,10 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#ifndef S_ISREG
+#  define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
+#endif
+
 static GObjectClass *parent_class;
 
 struct _GsfInputStdio {
diff -ur libgsf-1.14.27-orig/gsf/gsf-opendoc-utils.h libgsf-1.14.27/gsf/gsf-opendoc-utils.h
--- libgsf-1.14.27-orig/gsf/gsf-opendoc-utils.h	2013-02-23 16:27:40 -0500
+++ libgsf-1.14.27/gsf/gsf-opendoc-utils.h	2013-07-13 00:03:47 -0400
@@ -138,7 +138,7 @@
 
 /* For 1.15.x s/opendoc/odf/ and s/ooo/odf/ */
 #ifndef GSF_DISABLE_DEPRECATED
-extern GsfXMLInNS gsf_ooo_ns[]; /* use get_gsf_ooo_ns instead */
+LIBGSF_EXTERN GsfXMLInNS gsf_ooo_ns[]; /* use get_gsf_ooo_ns instead */
 GSF_DEPRECATED_FOR (gsf_odf_get_ns)
 GsfXMLInNS *get_gsf_ooo_ns (void);
 GSF_DEPRECATED_FOR (gsf_odf_get_version_string)
diff -ur libgsf-1.14.27-orig/gsf/gsf-output-stdio.c libgsf-1.14.27/gsf/gsf-output-stdio.c
--- libgsf-1.14.27-orig/gsf/gsf-output-stdio.c	2013-03-08 21:46:57 -0500
+++ libgsf-1.14.27/gsf/gsf-output-stdio.c	2013-07-13 00:17:52 -0400
@@ -52,6 +52,9 @@
 #ifdef HAVE_IO_H
 #include <io.h>
 #endif
+#ifndef S_ISREG
+#  define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
+#endif
 #endif /* G_OS_WIN32 */
 
 #ifndef W_OK
diff -ur libgsf-1.14.27-orig/gsf/gsf-utils.h libgsf-1.14.27/gsf/gsf-utils.h
--- libgsf-1.14.27-orig/gsf/gsf-utils.h	2013-03-07 17:56:29 -0500
+++ libgsf-1.14.27/gsf/gsf-utils.h	2013-07-13 00:03:06 -0400
@@ -280,21 +280,21 @@
  *
  * Major version number of libgsf, indicating the ABI version.
  */
-extern int libgsf_major_version;
+LIBGSF_EXTERN int libgsf_major_version;
 
 /**
  * libgsf_minor_version:
  *
  * Minor (secondary) version number of libgsf, indicating the API version.
  */
-extern int libgsf_minor_version;
+LIBGSF_EXTERN int libgsf_minor_version;
 
 /**
  * libgsf_micro_version:
  *
  * Micro (tertiary) version number of libgsf, indicating bug fixes.
  */
-extern int libgsf_micro_version;
+LIBGSF_EXTERN int libgsf_micro_version;
 
 char const *gsf_extension_pointer (char const * path);
 void	    gsf_iconv_close (GIConv handle);
diff -ur libgsf-1.14.27-orig/gsf-win32/Makefile.in libgsf-1.14.27/gsf-win32/Makefile.in
--- libgsf-1.14.27-orig/gsf-win32/Makefile.in	2013-06-23 12:50:44 -0400
+++ libgsf-1.14.27/gsf-win32/Makefile.in	2013-07-13 00:20:12 -0400
@@ -355,8 +355,8 @@
 CLEANFILES = $(am__append_1) $(am__append_2)
 @WITH_WIN32_TRUE@noinst_DATA = lib.def
 LIB_PUBLIC_HDRS = $(libgsf_win32_1_include_HEADERS)
-@HAVE_LIBEXE_TRUE@gsf_win32_mslibdir = $(DESTDIR)$(libdir)
-@HAVE_LIBEXE_TRUE@gsf_win32_mslib_DATA = gsf-win32-1.lib
+@HAVE_LIBEXE_TRUE@#gsf_win32_mslibdir = $(DESTDIR)$(libdir)
+@HAVE_LIBEXE_TRUE@#gsf_win32_mslib_DATA = gsf-win32-1.lib
 all: all-am
 
 .SUFFIXES:
diff -ur libgsf-1.14.27-orig/tools/gsf.c libgsf-1.14.27/tools/gsf.c
--- libgsf-1.14.27-orig/tools/gsf.c	2013-03-07 17:56:29 -0500
+++ libgsf-1.14.27/tools/gsf.c	2013-07-13 00:21:19 -0400
@@ -8,6 +8,13 @@
 #include <string.h>
 #include <errno.h>
 
+#ifndef S_ISREG
+#  define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
+#endif
+#ifndef S_ISDIR
+#  define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
+#endif
+
 static gboolean show_version;
 
 static GOptionEntry const gsf_options [] = {