diff -ur -x libtool -x '*.o' -x '*.lo' -x '*.la*' -x configure.lineno -x config.status -x config.log -x '*.Plo' -x '*.Po' -x .svn -x .git libpng-1.6.10.0/Makefile.in libpng-1.6.10/Makefile.in
--- libpng-1.6.10.0/Makefile.in	2014-03-06 19:35:14.000000000 +0100
+++ libpng-1.6.10/Makefile.in	2014-04-18 16:02:10.000000000 +0200
@@ -14,6 +14,11 @@

 @SET_MAKE@

+OS2_LA_NAME=libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
+OS2_DLL_NAME=png@PNGLIB_MAJOR@@PNGLIB_MINOR@
+OS2_DLL_OBJ=$(libpng16_la_OBJECTS:%.lo=%.o)
+OS2_DLL_LIBS=$(LIBS)
+
 # Makefile.am:
 #   Source file for Makefile.in (and hence Makefile)
 #
@@ -742,7 +747,7 @@
 # actually installed on a given system, so instead we check for every extension
 # we have seen.
 EXT_LIST = a dll.a so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@ la sl dylib
-all: $(BUILT_SOURCES) config.h
+all: $(BUILT_SOURCES) config.h $(OS2_DLL_NAME).dll
 	$(MAKE) $(AM_MAKEFLAGS) all-am

 .SUFFIXES:
@@ -815,6 +820,11 @@
 	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
 	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
 	}
+	rm "$(DESTDIR)$(libdir)/$(OS2_DLL_NAME).a"
+	install $(OS2_DLL_NAME).dll "$(DESTDIR)$(libdir)"
+	install $(OS2_LA_NAME).a "$(DESTDIR)$(libdir)"
+	install $(OS2_LA_NAME)_s.a "$(DESTDIR)$(libdir)"
+	install $(OS2_LA_NAME).lib "$(DESTDIR)$(libdir)"

 uninstall-libLTLIBRARIES:
 	@$(NORMAL_UNINSTALL)
@@ -2258,3 +2268,15 @@
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT:
+
+$(OS2_DLL_NAME).dll: $(OS2_LA_NAME).la
+	rm -f $(OS2_DLL_NAME)*.a
+	ar cru $(OS2_LA_NAME)_s.a $(OS2_DLL_OBJ)
+	echo "LIBRARY $(OS2_DLL_NAME) INITINSTANCE TERMINSTANCE" > $(OS2_DLL_NAME).def
+	echo "DATA MULTIPLE" >> $(OS2_DLL_NAME).def
+	echo "EXPORTS" >> $(OS2_DLL_NAME).def
+	emxexp $(OS2_DLL_OBJ) >> $(OS2_DLL_NAME).def
+	gcc -g -Zbin-files -Zomf -Zdll $(OS2_DLL_NAME).def -o $@ $(OS2_DLL_OBJ) $(OS2_DLL_LIBS)
+	emximp -o $(OS2_LA_NAME).a $(OS2_DLL_NAME).def
+	emximp -o $(OS2_LA_NAME).lib $(OS2_DLL_NAME).def
+	cp $@ .libs
diff -ur -x libtool -x '*.o' -x '*.lo' -x '*.la*' -x configure.lineno -x config.status -x config.log -x '*.Plo' -x '*.Po' -x .svn -x .git libpng-1.6.10.0/pngconf.h libpng-1.6.10/pngconf.h
--- libpng-1.6.10.0/pngconf.h	2014-03-06 19:35:00.000000000 +0100
+++ libpng-1.6.10/pngconf.h	2014-04-17 12:06:38.000000000 +0200
@@ -266,6 +266,7 @@
 #  if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
 #    define PNGAPI _System
 #  else /* !Windows/x86 && !OS/2 */
+#    define PNG_DLL_EXPORT
     /* Use the defaults, or define PNG*API on the command line (but
      * this will have to be done for every compile!)
      */