Mine

--- Makefile.orig       2005-11-12 15:02:16.000000000 -0300
+++ Makefile    2005-11-12 15:02:20.000000000 -0300
@@ -50,6 +50,11 @@
 endif
 endif # WITHOUT_ZAPTEL

+ifneq ($(wildcard $(CROSS_COMPILE_TARGET)/usr/include/spandsp.h $(CROSS_COMPILE _TARGET)/usr/local/include/spandsp.h),)
+APPS+=app_rxfax.so app_txfax.so
+endif
+
+
 ifneq ($(wildcard $(CROSS_COMPILE_TARGET)/usr/local/include/osp/osp.h $(CROSS_COMPILE_TARGET)/usr/include/osp/osp.h),)
 APPS+=app_osplookup.so
 endif
@@ -102,6 +107,13 @@
 app_curl.so: app_curl.o
        $(CC) $(SOLINK) -o $@ ${CYGSOLINK} $< ${CYGSOLIB} $(CURLLIBS)

+app_rxfax.so : app_rxfax.o
+       $(CC) $(SOLINK) -o $@ $< -lspandsp -ltiff
+
+app_txfax.so : app_txfax.o
+       $(CC) $(SOLINK) -o $@ $< -lspandsp -ltiff
+
+
 app_sql_postgres.o: app_sql_postgres.c
        $(CC) -pipe -I/usr/local/pgsql/include $(CFLAGS) -c -o app_sql_postgres.o app_sql_postgres.c