Fix building with mingw and make sure linking generates proper DLL files

31 files changed, 100 insertions, 27 deletions

diff --git a/axiom/configure.ac b/axiom/configure.ac
index d3cdd1f..9cee511 100644
--- a/axiom/configure.ac
+++ b/axiom/configure.ac
@@ -89,6 +89,20 @@ AC_CHECK_HEADERS([linux/if.h],[],[],
 #endif
 ])
 
+dnl Check for cygwin and mingw builds to allow building DLLs
+WIN32_EXTRA_LIBADD=
+WIN32_EXTRA_LDFLAGS=
+case "$host" in
+  *-*-cygwin*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+  *-*-mingw*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+esac
+AC_SUBST(WIN32_EXTRA_LIBADD)
+AC_SUBST(WIN32_EXTRA_LDFLAGS)
+
 dnl This is a check to see if we are running MacOS X
 dnl It may be better to do a Darwin check
 AC_CHECK_HEADER([sys/appleapiopts.h],
diff --git a/axiom/src/om/Makefile.am b/axiom/src/om/Makefile.am
index 1740883..06ba246 100644
--- a/axiom/src/om/Makefile.am
+++ b/axiom/src/om/Makefile.am
@@ -37,7 +37,7 @@ libaxis2_axiom_la_LIBADD =	$(top_builddir)/src/soap/libaxis2_soap.la \
 							../parser/${WRAPPER_DIR}/libaxis2_parser.la \
 							../../../util/src/libaxutil.la
 
-libaxis2_axiom_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_axiom_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES =	-I$(top_builddir)/include \
             -I$(top_builddir)/src/parser \
diff --git a/axiom/src/parser/guththila/Makefile.am b/axiom/src/parser/guththila/Makefile.am
index 51a6667..9682e75 100644
--- a/axiom/src/parser/guththila/Makefile.am
+++ b/axiom/src/parser/guththila/Makefile.am
@@ -20,7 +20,7 @@ libaxis2_parser_la_LIBADD = ../../../../guththila/src/libguththila.la \
 libaxis2_parser_la_SOURCES = ../xml_reader.c ../xml_writer.c guththila_xml_writer_wrapper.c \
                                 guththila_xml_reader_wrapper.c 
 
-libaxis2_parser_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_parser_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
 			-I ../../../../util/include \
diff --git a/axiom/src/parser/libxml2/Makefile.am b/axiom/src/parser/libxml2/Makefile.am
index 8e67318..53f5ac7 100644
--- a/axiom/src/parser/libxml2/Makefile.am
+++ b/axiom/src/parser/libxml2/Makefile.am
@@ -21,7 +21,7 @@ libaxis2_parser_la_SOURCES = ../xml_reader.c ../xml_writer.c \
 libaxis2_parser_la_LIBADD = @LIBXML2_LIBS@ \
 							../../../../util/src/libaxutil.la
 
-libaxis2_parser_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_parser_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 
 INCLUDES = -I$(top_builddir)/include \
diff --git a/axiom/src/xpath/Makefile.am b/axiom/src/xpath/Makefile.am
index 0fd3152..2fd9dcb 100644
--- a/axiom/src/xpath/Makefile.am
+++ b/axiom/src/xpath/Makefile.am
@@ -21,7 +21,7 @@ libaxis2_xpath_la_SOURCES = xpath.c \
 			xpath_internals_parser.c \
 			xpath_streaming.c
 
-libaxis2_xpath_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_xpath_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 libaxis2_xpath_la_LIBADD = $(top_builddir)/../util/src/libaxutil.la \
 			$(top_builddir)/src/om/libaxis2_axiom.la
diff --git a/configure.ac b/configure.ac
index 0d0a308..7c0b8a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -106,6 +106,20 @@ AC_CHECK_HEADERS([linux/if.h],[],[],
 AC_CHECK_HEADERS([net/if_types.h])
 AC_CHECK_HEADERS([net/if_dl.h])
 
+dnl Check for cygwin and mingw builds to allow building DLLs
+WIN32_EXTRA_LIBADD=
+WIN32_EXTRA_LDFLAGS=
+case "$host" in
+  *-*-cygwin*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+  *-*-mingw*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+esac
+AC_SUBST(WIN32_EXTRA_LIBADD)
+AC_SUBST(WIN32_EXTRA_LDFLAGS)
+
 dnl This is a check to see if we are running MacOS X
 dnl It may be better to do a Darwin check
 AC_CHECK_HEADERS([sys/appleapiopts.h]) 
diff --git a/guththila/configure.ac b/guththila/configure.ac
index 38934f1..34e4bee 100644
--- a/guththila/configure.ac
+++ b/guththila/configure.ac
@@ -67,6 +67,19 @@ if test "$GCC" = "yes"; then
     CFLAGS="$CFLAGS -ansi -ggdb3 -Wall -Wno-implicit-function-declaration "
 fi
 
+dnl Check for cygwin and mingw builds to allow building DLLs
+WIN32_EXTRA_LIBADD=
+WIN32_EXTRA_LDFLAGS=
+case "$host" in
+  *-*-cygwin*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+  *-*-mingw*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+esac
+AC_SUBST(WIN32_EXTRA_LIBADD)
+AC_SUBST(WIN32_EXTRA_LDFLAGS)
 
 dnl Checks for header files.
 AC_HEADER_STDC
diff --git a/guththila/src/Makefile.am b/guththila/src/Makefile.am
index 5df4bce..67f0b41 100644
--- a/guththila/src/Makefile.am
+++ b/guththila/src/Makefile.am
@@ -14,8 +14,6 @@
 # limitations under the License.
 lib_LTLIBRARIES = libguththila.la
 
-libguththila_la_LDFLAGS = -version-info $(VERSION_NO)
-
 libguththila_la_SOURCES = guththila_buffer.c \
 			  guththila_namespace.c \
 	 		  guththila_token.c \
@@ -27,6 +25,8 @@ libguththila_la_SOURCES = guththila_buffer.c \
 
 libguththila_la_LIBADD = ../../util/src/libaxutil.la
 
+libguththila_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
+
 INCLUDES = -I$(top_builddir)/include \
 			-I ../../util/include
 
diff --git a/neethi/configure.ac b/neethi/configure.ac
index 688f53d..fc4cb82 100644
--- a/neethi/configure.ac
+++ b/neethi/configure.ac
@@ -113,6 +113,21 @@ dnl Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS([stdio.h stdlib.h string.h])
 AC_CHECK_HEADERS([sys/socket.h])
+
+dnl Check for cygwin and mingw builds to allow building DLLs
+WIN32_EXTRA_LIBADD=
+WIN32_EXTRA_LDFLAGS=
+case "$host" in
+  *-*-cygwin*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+  *-*-mingw*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+esac
+AC_SUBST(WIN32_EXTRA_LIBADD)
+AC_SUBST(WIN32_EXTRA_LDFLAGS)
+
 dnl This is a check to see if we are running MacOS X
 dnl It may be better to do a Darwin check
 AC_CHECK_HEADER([sys/appleapiopts.h],
diff --git a/neethi/src/Makefile.am b/neethi/src/Makefile.am
index bb45bc6..4bd6128 100644
--- a/neethi/src/Makefile.am
+++ b/neethi/src/Makefile.am
@@ -47,7 +47,7 @@ libneethi_la_LIBADD  = ../../axiom/src/om/libaxis2_axiom.la \
 #					$(top_builddir)/axiom/src/om/libaxis2_axiom.la 
 
 
-libneethi_la_LDFLAGS = -version-info $(VERSION_NO)
+libneethi_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
 		-I ../../util/include \
diff --git a/src/core/engine/Makefile.am b/src/core/engine/Makefile.am
index 4244820..feb709c 100644
--- a/src/core/engine/Makefile.am
+++ b/src/core/engine/Makefile.am
@@ -29,7 +29,7 @@ libaxis2_engine_la_SOURCES= ../transport/transport_receiver.c handler.c \
                               $(top_builddir)/src/core/transport/http/common/http_header.c \
                               $(top_builddir)/src/core/transport/http/common/http_accept_record.c
 
-libaxis2_engine_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_engine_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 libaxis2_engine_la_LIBADD=$(top_builddir)/src/core/description/libaxis2_description.la \
                           $(top_builddir)/src/core/receivers/libaxis2_receivers.la \
diff --git a/src/core/transport/amqp/receiver/Makefile.am b/src/core/transport/amqp/receiver/Makefile.am
index 0e2f0f8..882807b 100644
--- a/src/core/transport/amqp/receiver/Makefile.am
+++ b/src/core/transport/amqp/receiver/Makefile.am
@@ -22,7 +22,7 @@ libaxis2_amqp_receiver_la_LIBADD = $(top_builddir)/util/src/libaxutil.la \
 								   $(top_builddir)/src/core/transport/amqp/util/libaxis2_amqp_util.la \

 								   $(top_builddir)/src/core/transport/amqp/receiver/qpid_receiver/libaxis2_qpid_receiver.la

 

-libaxis2_amqp_receiver_la_LDFLAGS = -version-info $(VERSION_NO)

+libaxis2_amqp_receiver_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)

 

 INCLUDES = -I$(top_builddir)/include \

 	       -I$(top_builddir)/src/core/transport/amqp/util \

diff --git a/src/core/transport/amqp/receiver/qpid_receiver/Makefile.am b/src/core/transport/amqp/receiver/qpid_receiver/Makefile.am
index faf0c34..2535545 100644
--- a/src/core/transport/amqp/receiver/qpid_receiver/Makefile.am
+++ b/src/core/transport/amqp/receiver/qpid_receiver/Makefile.am
@@ -25,7 +25,7 @@ libaxis2_qpid_receiver_la_LIBADD = $(top_builddir)/util/src/libaxutil.la \
 								   $(top_builddir)/src/core/transport/amqp/util/libaxis2_amqp_util.la \

 								   $(top_builddir)/src/core/transport/amqp/receiver/qpid_receiver/request_processor/libaxis2_amqp_request_processor.la

 

-libaxis2_qpid_receiver_la_LDFLAGS = g++ -version-info $(VERSION_NO)

+libaxis2_qpid_receiver_la_LDFLAGS = g++ -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)

 

 INCLUDES = -I$(top_builddir)/include \

 	       -I$(top_builddir)/src/core/transport/amqp/receiver/qpid_receiver \

diff --git a/src/core/transport/amqp/receiver/qpid_receiver/request_processor/Makefile.am b/src/core/transport/amqp/receiver/qpid_receiver/request_processor/Makefile.am
index 991e7a5..daa2a15 100644
--- a/src/core/transport/amqp/receiver/qpid_receiver/request_processor/Makefile.am
+++ b/src/core/transport/amqp/receiver/qpid_receiver/request_processor/Makefile.am
@@ -19,7 +19,7 @@ libaxis2_amqp_request_processor_la_SOURCES = axis2_amqp_request_processor.c
 libaxis2_amqp_request_processor_la_LIBADD = $(top_builddir)/util/src/libaxutil.la \

 											$(top_builddir)/src/core/transport/amqp/util/libaxis2_amqp_util.la

 

-libaxis2_amqp_request_processor_la_LDFLAGS = -version-info $(VERSION_NO)

+libaxis2_amqp_request_processor_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)

 

 INCLUDES = -I$(top_builddir)/include \

 	       -I$(top_builddir)/src/core/transport/amqp/receiver/qpid_receiver/request_processor \

diff --git a/src/core/transport/amqp/sender/Makefile.am b/src/core/transport/amqp/sender/Makefile.am
index 9b662ed..68cfc9a 100644
--- a/src/core/transport/amqp/sender/Makefile.am
+++ b/src/core/transport/amqp/sender/Makefile.am
@@ -22,7 +22,7 @@ libaxis2_amqp_sender_la_LIBADD = $(top_builddir)/util/src/libaxutil.la \
 								 $(top_builddir)/src/core/transport/amqp/util/libaxis2_amqp_util.la \

 								 $(top_builddir)/src/core/transport/amqp/sender/qpid_sender/libaxis2_qpid_sender.la

 

-libaxis2_amqp_sender_la_LDFLAGS = -version-info $(VERSION_NO)

+libaxis2_amqp_sender_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)

 

 INCLUDES = -I$(top_builddir)/include \

 	       -I$(top_builddir)/src/core/transport/amqp/util \

diff --git a/src/core/transport/amqp/sender/qpid_sender/Makefile.am b/src/core/transport/amqp/sender/qpid_sender/Makefile.am
index 5f3d34c..c064041 100644
--- a/src/core/transport/amqp/sender/qpid_sender/Makefile.am
+++ b/src/core/transport/amqp/sender/qpid_sender/Makefile.am
@@ -21,7 +21,7 @@ libaxis2_qpid_sender_la_LIBADD = $(top_builddir)/util/src/libaxutil.la \
 								 $(top_builddir)/src/core/transport/amqp/util/libaxis2_amqp_util.la \

 								 $(QPID_HOME)/lib/libqpidclient.la

 

-libaxis2_qpid_sender_la_LDFLAGS = g++ -version-info $(VERSION_NO)

+libaxis2_qpid_sender_la_LDFLAGS = g++ -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)

 

 INCLUDES = -I$(top_builddir)/include \

 	       -I$(top_builddir)/src/core/transport/amqp/sender/qpid_sender \

diff --git a/src/core/transport/amqp/util/Makefile.am b/src/core/transport/amqp/util/Makefile.am
index 0ecda7e..61cbe6c 100644
--- a/src/core/transport/amqp/util/Makefile.am
+++ b/src/core/transport/amqp/util/Makefile.am
@@ -18,7 +18,7 @@ libaxis2_amqp_util_la_SOURCES = axis2_amqp_util.c
 
 libaxis2_amqp_util_la_LIBADD = $(top_builddir)/util/src/libaxutil.la
 
-libaxis2_amqp_util_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_amqp_util_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
 	       -I$(top_builddir)/src/core/transport/amqp/util \
diff --git a/src/core/transport/http/common/Makefile.am b/src/core/transport/http/common/Makefile.am
index 84b6548..5c1db0d 100644
--- a/src/core/transport/http/common/Makefile.am
+++ b/src/core/transport/http/common/Makefile.am
@@ -29,7 +29,7 @@ libaxis2_http_common_la_LIBADD= $(top_builddir)/util/src/libaxutil.la\
                                 $(top_builddir)/src/core/transport/http/util/libaxis2_http_util.la\
                                 $(top_builddir)/src/core/engine/libaxis2_engine.la
 
-libaxis2_http_common_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_http_common_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
 	       -I$(top_builddir)/src/core/transport\
diff --git a/src/core/transport/http/receiver/Makefile.am b/src/core/transport/http/receiver/Makefile.am
index 8e838e1..cf9bf22 100644
--- a/src/core/transport/http/receiver/Makefile.am
+++ b/src/core/transport/http/receiver/Makefile.am
@@ -22,7 +22,7 @@ libaxis2_http_receiver_la_SOURCES = http_receiver.c\
                                     http_svr_thread.c
 
 
-libaxis2_http_receiver_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_http_receiver_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
 	       -I$(top_builddir)/src/core/transport\
diff --git a/src/core/transport/http/sender/Makefile.am b/src/core/transport/http/sender/Makefile.am
index dd314d3..0e1d2a4 100644
--- a/src/core/transport/http/sender/Makefile.am
+++ b/src/core/transport/http/sender/Makefile.am
@@ -55,7 +55,7 @@ libaxis2_http_sender_la_LIBADD = $(top_builddir)/src/core/transport/http/common/
 								 $(SSL_LIBS)
 
 
-libaxis2_http_sender_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_http_sender_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
 	       -I$(top_builddir)/src/core/transport\
diff --git a/src/core/transport/http/sender/ntlm/default/Makefile.am b/src/core/transport/http/sender/ntlm/default/Makefile.am
index 1457475..a5a6849 100644
--- a/src/core/transport/http/sender/ntlm/default/Makefile.am
+++ b/src/core/transport/http/sender/ntlm/default/Makefile.am
@@ -20,5 +20,7 @@ libaxis2_ntlm_la_SOURCES = ../ntlm.c \
 
 libaxis2_ntlm_la_LIBADD =  $(top_builddir)/util/src/libaxutil.la
 
+libaxis2_ntlm_la_LDFLAGS = $(WIN32_EXTRA_LDFLAGS)
+
 INCLUDES = -I$(top_builddir)/include \
             -I$(top_builddir)/util/include
diff --git a/src/core/transport/http/sender/ntlm/heimdal/Makefile.am b/src/core/transport/http/sender/ntlm/heimdal/Makefile.am
index 05c6239..cadaa44 100644
--- a/src/core/transport/http/sender/ntlm/heimdal/Makefile.am
+++ b/src/core/transport/http/sender/ntlm/heimdal/Makefile.am
@@ -21,7 +21,7 @@ libaxis2_ntlm_la_SOURCES = ../ntlm.c \
 libaxis2_ntlm_la_LIBADD = @NTLM_LDFLAGS@ \
 							$(top_builddir)/util/src/libaxutil.la
 
-#libaxis2_ntlm_la_LDFLAGS = -version-info $(VERSION_NO)
+#libaxis2_ntlm_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 
 INCLUDES = -I$(top_builddir)/include \
diff --git a/src/core/transport/http/sender/ntlm/libntlm/Makefile.am b/src/core/transport/http/sender/ntlm/libntlm/Makefile.am
index 823c9c8..e9d142e 100644
--- a/src/core/transport/http/sender/ntlm/libntlm/Makefile.am
+++ b/src/core/transport/http/sender/ntlm/libntlm/Makefile.am
@@ -21,7 +21,7 @@ libaxis2_ntlm_la_SOURCES = ../ntlm.c \
 libaxis2_ntlm_la_LIBADD = @NTLM_LDFLAGS@ \
 							$(top_builddir)/util/src/libaxutil.la
 
-#libaxis2_ntlm_la_LDFLAGS = -version-info $(VERSION_NO)
+#libaxis2_ntlm_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 
 INCLUDES = -I$(top_builddir)/include \
diff --git a/src/core/transport/http/server/apache2/Makefile.am b/src/core/transport/http/server/apache2/Makefile.am
index ada2471..a5f559c 100644
--- a/src/core/transport/http/server/apache2/Makefile.am
+++ b/src/core/transport/http/server/apache2/Makefile.am
@@ -28,7 +28,7 @@ libmod_axis2_la_LIBADD   = $(LDFLAGS) \
 		     $(top_builddir)/src/core/transport/http/common/libaxis2_http_common.la\
 		     $(top_builddir)/axiom/src/parser/$(WRAPPER_DIR)/libaxis2_parser.la
 
-libmod_axis2_la_LDFLAGS = -version-info $(VERSION_NO)
+libmod_axis2_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
 	       -I$(top_builddir)/src/core/transport/http \
diff --git a/src/core/transport/tcp/receiver/Makefile.am b/src/core/transport/tcp/receiver/Makefile.am
index f9fb16c..68e5a17 100644
--- a/src/core/transport/tcp/receiver/Makefile.am
+++ b/src/core/transport/tcp/receiver/Makefile.am
@@ -23,7 +23,7 @@ libaxis2_tcp_receiver_la_SOURCES = tcp_svr_thread.c \
 									tcp_receiver.c
 
 
-libaxis2_tcp_receiver_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_tcp_receiver_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
 	       -I$(top_builddir)/src/core/transport\
diff --git a/src/core/transport/tcp/sender/Makefile.am b/src/core/transport/tcp/sender/Makefile.am
index 2875299..17d364d 100644
--- a/src/core/transport/tcp/sender/Makefile.am
+++ b/src/core/transport/tcp/sender/Makefile.am
@@ -24,7 +24,7 @@ libaxis2_tcp_sender_la_LIBADD = $(top_builddir)/src/core/transport/http/common/l
 								 $(SSL_LIBS)
 
 
-libaxis2_tcp_sender_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_tcp_sender_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
 	   -I$(top_builddir)/src/core/transport\
diff --git a/src/modules/mod_addr/Makefile.am b/src/modules/mod_addr/Makefile.am
index 23be098..5aad491 100644
--- a/src/modules/mod_addr/Makefile.am
+++ b/src/modules/mod_addr/Makefile.am
@@ -24,7 +24,7 @@ libaxis2_mod_addr_la_LIBADD = $(top_builddir)/axiom/src/om/libaxis2_axiom.la \
 			      $(top_builddir)/util/src/libaxutil.la \
 			      $(top_builddir)/src/core/engine/libaxis2_engine.la 
 
-libaxis2_mod_addr_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_mod_addr_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
             -I$(top_builddir)/src/core/description \
diff --git a/src/modules/mod_log/Makefile.am b/src/modules/mod_log/Makefile.am
index 7508282..5689649 100644
--- a/src/modules/mod_log/Makefile.am
+++ b/src/modules/mod_log/Makefile.am
@@ -25,7 +25,7 @@ libaxis2_mod_log_la_LIBADD =  \
 					$(top_builddir)/axiom/src/om/libaxis2_axiom.la \
 					$(top_builddir)/src/core/engine/libaxis2_engine.la
 
-libaxis2_mod_log_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_mod_log_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include \
             -I$(top_builddir)/src/core/description \
diff --git a/util/configure.ac b/util/configure.ac
index 65555da..ccb808b 100644
--- a/util/configure.ac
+++ b/util/configure.ac
@@ -196,6 +196,20 @@ AC_SUBST([PLATFORM])
 
 AC_DEFINE([HOST_OS_MINGW], 1, [define if we are on mingw])
 
+dnl Check for cygwin and mingw builds to allow building DLLs
+WIN32_EXTRA_LIBADD=
+WIN32_EXTRA_LDFLAGS=
+case "$host" in
+  *-*-cygwin*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+  *-*-mingw*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+esac
+AC_SUBST(WIN32_EXTRA_LIBADD)
+AC_SUBST(WIN32_EXTRA_LDFLAGS)
+
 AC_MSG_CHECKING(whether to build guththila xml parser library)
 AC_ARG_ENABLE(guththila, [  --enable-guththila    build guththila xml parser library wrapper. default=no],
 [ case "${enableval}" in
diff --git a/util/src/Makefile.am b/util/src/Makefile.am
index fb40027..0cc7fbf 100644
--- a/util/src/Makefile.am
+++ b/util/src/Makefile.am
@@ -56,9 +56,10 @@ libaxutil_la_SOURCES = hash.c \
                         
 libaxutil_la_LIBADD =	$(top_builddir)/src/platforms/$(PLATFORM)/libaxis2_$(PLATFORM).la \
 			-lpthread \
-			@ZLIBLIBS@
+			@ZLIBLIBS@ \
+                        $(WIN32_EXTRA_LIBADD)
 
-libaxutil_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxutil_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = -I$(top_builddir)/include
 
diff --git a/util/src/minizip/Makefile.am b/util/src/minizip/Makefile.am
index f9e239e..9cf9fe1 100644
--- a/util/src/minizip/Makefile.am
+++ b/util/src/minizip/Makefile.am
@@ -19,7 +19,7 @@ libaxis2_minizip_la_SOURCES =	ioapi.c \
 							archive_extract.c \
 							crypt.c
 
-libaxis2_minizip_la_LDFLAGS = -version-info $(VERSION_NO)
+libaxis2_minizip_la_LDFLAGS = -version-info $(VERSION_NO) $(WIN32_EXTRA_LDFLAGS)
 
 INCLUDES = 	-I$(top_builddir)/include \
             -I$(top_builddir)/platforms