diff --git a/src/mod/endpoints/mod_gsmopen/Makefile.am b/src/mod/endpoints/mod_gsmopen/Makefile.am
index bde175df8f..8879a4616d 100644
--- a/src/mod/endpoints/mod_gsmopen/Makefile.am
+++ b/src/mod/endpoints/mod_gsmopen/Makefile.am
@@ -1,7 +1,24 @@
 include $(top_srcdir)/build/modmake.rulesam
 MODNAME=mod_gsmopen
+
+TIFF_DIR=$(switch_srcdir)/libs/tiff-3.8.2
+TIFF_BUILDDIR=$(switch_builddir)/libs/tiff-3.8.2
+TIFF_LA=$(TIFF_BUILDDIR)/libtiff/libtiff.la
+
+SPANDSP_DIR=$(switch_srcdir)/libs/spandsp
+SPANDSP_BUILDDIR=$(switch_builddir)/libs/spandsp
+SPANDSP_LA=$(SPANDSP_BUILDDIR)/src/libspandsp.la
+
 mod_LTLIBRARIES = mod_gsmopen.la
 mod_gsmopen_la_SOURCES  = mod_gsmopen.cpp gsmopen_protocol.cpp 
-mod_gsmopen_la_CFLAGS   = $(AM_CFLAGS) -DGSMOPEN_SVN_VERSION=\"`cat $(switch_builddir)/.version`\"
-mod_gsmopen_la_LIBADD   = $(switch_builddir)/libfreeswitch.la
-mod_gsmopen_la_LDFLAGS  = -avoid-version -module -no-undefined -lasound -lgsmme -lspandsp
+mod_gsmopen_la_CFLAGS   = $(AM_CFLAGS) -I$(SPANDSP_DIR)/src -I$(TIFF_DIR)/libtiff -I$(SPANDSP_BUILDDIR)/src -I$(TIFF_BUILDDIR)/libtiff -I. -DGSMOPEN_SVN_VERSION=\"`cat $(switch_builddir)/.version`\"
+mod_gsmopen_la_LIBADD   = $(switch_builddir)/libfreeswitch.la $(SPANDSP_LA) $(TIFF_LA)
+mod_gsmopen_la_LDFLAGS  = -avoid-version -module -no-undefined -lasound -lgsmme
+
+$(SPANDSP_LA): $(TIFF_LA) $(SPANDSP_DIR) $(SPANDSP_DIR)/.update
+	cd $(SPANDSP_BUILDDIR) && $(MAKE) -j1
+	$(TOUCH_TARGET)
+
+$(TIFF_LA): $(TIFF_DIR) $(TIFF_DIR)/.update
+	cd $(TIFF_BUILDDIR) && $(MAKE) -j1
+	$(TOUCH_TARGET)