diff -r 59343ae4491c frontend/Makefile.am
--- a/frontend/Makefile.am	Thu Dec 07 21:24:57 2017 +0100
+++ b/frontend/Makefile.am	Thu Dec 07 23:03:28 2017 +0100
@@ -32,6 +32,8 @@
               -I$(top_srcdir)/gnulib/src \
               $(FREETYPE_CPPFLAGS)
 LDADD = $(top_builddir)/lib/libttfautohint.la \
+        $(top_builddir)/lib/libsds.la \
+        $(top_builddir)/lib/libnumberset.la \
         $(top_builddir)/gnulib/src/libgnu.la \
         $(LTLIBINTL) \
         $(LTLIBTHREAD) \
diff -r 59343ae4491c lib/Makefile.am
--- a/lib/Makefile.am	Thu Dec 07 21:24:57 2017 +0100
+++ b/lib/Makefile.am	Thu Dec 07 23:03:28 2017 +0100
@@ -10,6 +10,10 @@
 # The file `COPYING' mentioned in the previous paragraph is distributed
 # with the ttfautohint library.
 
+ABI_CURRENT=1
+ABI_REVISION=0
+ABI_AGE=0
+
 AM_CPPFLAGS = -I$(top_builddir)/gnulib/src \
               -I$(top_srcdir)/gnulib/src \
               $(FREETYPE_CPPFLAGS) \
@@ -17,8 +21,13 @@
 
 noinst_LTLIBRARIES = \
   libsds.la \
-  libnumberset.la \
-  libttfautohint.la
+  libnumberset.la
+
+lib_LTLIBRARIES = libttfautohint.la
+
+include_HEADERS = ttfautohint.h ttfautohint-errors.h
+
+libttfautohint_la_LDFLAGS = -no-undefined -version-info $(ABI_CURRENT):$(ABI_REVISION):$(ABI_AGE)
 
 libsds_la_SOURCES = \
   sds-wrapper.c sds.h
@@ -81,8 +90,8 @@
   ttfautohint-scripts.h ttfautohint-coverages.h
 
 libttfautohint_la_LIBADD = \
-  libsds.la \
-  libnumberset.la \
+  ${noinst_LTLIBRARIES} \
+  $(top_builddir)/gnulib/src/libgnu.la \
   $(LIBM) \
   $(FREETYPE_LIBS) \
   $(HARFBUZZ_LIBS)
diff -r 59343ae4491c lib/ttfautohint.c
--- a/lib/ttfautohint.c	Thu Dec 07 21:24:57 2017 +0100
+++ b/lib/ttfautohint.c	Thu Dec 07 23:03:28 2017 +0100
@@ -40,7 +40,7 @@
 }
 
 
-TA_Error
+LT_LIB_EXPORT TA_Error
 TTF_autohint(const char* options,
              ...)
 {
diff -r 59343ae4491c lib/ttfautohint.h
--- a/lib/ttfautohint.h	Thu Dec 07 21:24:57 2017 +0100
+++ b/lib/ttfautohint.h	Thu Dec 07 23:03:28 2017 +0100
@@ -19,6 +19,17 @@
 #include <stdarg.h>
 #include <stdint.h>
 
+#ifdef _WIN32
+	#ifdef DLL_EXPORT
+		#define LT_LIB_EXPORT __declspec(dllexport)
+	#elif defined(DLL_IMPORT)
+		#define LT_LIB_EXPORT __declspec(dllimport)
+	#endif
+#endif
+#ifndef LT_LIB_EXPORT
+	#define LT_LIB_EXPORT
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -593,7 +604,7 @@
  * ```C
  */
 
-TA_Error
+LT_LIB_EXPORT TA_Error
 TTF_autohint(const char* options,
              ...);