AC_CHECK_LIB(jpeg, jpeg_std_error,, AC_MSG_ERROR([no usable libjpeg; please install libjpeg devel package or equivalent]))
+AC_CHECK_LIB(jbig, jbg_enc_out, have_libjbig=yes, have_libjbig=no)
+if test "x$have_libjbig" = "xyes" ; then
+SPANDSP_LA_JBIG="-ljbig"
+AC_SUBST(SPANDSP_LA_JBIG)
+fi
+
AC_CHECK_LIB(resolv, res_init, have_libresolv=yes, have_libresolv=no)
if test "x$have_libresolv" = "xyes" ; then
APR_ADDTO(SWITCH_AM_LDFLAGS, -lresolv)
mod_LTLIBRARIES = mod_spandsp.la
mod_spandsp_la_SOURCES = mod_spandsp.c udptl.c mod_spandsp_fax.c mod_spandsp_dsp.c mod_spandsp_codecs.c mod_spandsp_modem.c
mod_spandsp_la_CFLAGS = $(BUILD_CFLAGS) $(AM_CFLAGS) -I$(SPANDSP_DIR)/src -I$(TIFF_DIR)/libtiff -I$(SPANDSP_BUILDDIR)/src -I$(TIFF_BUILDDIR)/libtiff -I.
-mod_spandsp_la_LIBADD = $(switch_builddir)/libfreeswitch.la $(SPANDSP_LA) $(TIFF_LA) -ljpeg -lz -lutil
+mod_spandsp_la_LIBADD = $(switch_builddir)/libfreeswitch.la $(SPANDSP_LA) $(TIFF_LA) $(SPANDSP_LA_JBIG) -ljpeg -lz -lutil
mod_spandsp_la_LDFLAGS = -avoid-version -module -no-undefined -shared
$(SPANDSP_LA): $(TIFF_LA) $(SPANDSP_DIR) $(SPANDSP_DIR)/.update