FS-3182: fix mod_dingaling/iksemel/gnutls link error when using newer autotools

acinclude.m4

@@ -12,4 +12,5 @@ m4_include([build/config/sched_setaffinity.m4])
 m4_include([libs/apr/build/apr_common.m4])
 m4_include([libs/sofia-sip/m4/sac-pkg-config.m4])
 m4_include([libs/sofia-sip/m4/sac-openssl.m4])
+m4_include([libs/iksemel/build/libgnutls.m4])
 m4_include([build/config/libcurl.m4])

build/modmake.rules.in

@@ -27,6 +27,7 @@ INSTALL=@INSTALL@
 GETLIB=@GETLIB@
 LIBTOOL=@LIBTOOL@
 AR=@AR@
+LIBGNUTLS_LIBS=@LIBGNUTLS_LIBS@
 LTINSTALL=$(LIBTOOL) --quiet --mode=install $(INSTALL) 
 LTUNINSTALL=$(LIBTOOL) --mode=uninstall rm -f 
 CCLD = $(CC)

configure.in

@@ -144,6 +144,8 @@ if test "${enable_optimizer}" = "yes" ; then
         AX_CC_MAXOPT
 fi
 
+AX_PATH_LIBGNUTLS()
+
 # set defaults for use on all platforms
 SWITCH_AM_CFLAGS="-I${switch_srcdir}/src/include -I${switch_builddir}/src/include -I${switch_srcdir}/libs/libteletone/src"
 SWITCH_AM_CXXFLAGS="-I${switch_srcdir}/src/include -I${switch_builddir}/src/include -I${switch_srcdir}/libs/libteletone/src"

src/mod/endpoints/mod_dingaling/Makefile

@@ -10,8 +10,10 @@ DING_DIR=$(BASE)/libs/libdingaling
 LOCAL_CFLAGS += -I$(DING_DIR)/src -I$(BASE)/libs/iksemel/include
 LOCAL_OBJS=$(DING_DIR)/src/libdingaling.o $(DING_DIR)/src/sha1.o $(IKS_LA)
 LOCAL_SOURCES=$(DING_DIR)/src/libdingaling.c $(DING_DIR)/src/sha1.c
+LOCAL_LDFLAGS=$(LIBGNUTLS_LIBS)
 include $(BASE)/build/modmake.rules
 
+
 $(IKS_LA): $(IKS_DIR) $(IKS_DIR)/.update
 	@cd $(IKS_DIR) && $(MAKE)
 	@$(TOUCH_TARGET)