Index: src/prelude/Makefile.am
===================================================================
--- src/prelude/Makefile.am	(revision 375a068b3108942e02b2e4dce77e8cb4873fd692)
+++ src/prelude/Makefile.am	(revision c5a8c5bf2ad8fe91b68614a3c832241d460c3571)
@@ -42,5 +42,5 @@
 prototypes.awk :
 
-../libcfa/libcfa-prelude.c : prelude.cf extras.cf builtins.cf
+../libcfa/libcfa-prelude.c : prelude.cf extras.cf builtins.cf ${abs_top_srcdir}/src/driver/cfa-cpp
 	${AM_V_GEN}${abs_top_srcdir}/src/driver/cfa-cpp -l prelude.cf $@  # use src/cfa-cpp as not in lib until after install
 
Index: src/prelude/Makefile.in
===================================================================
--- src/prelude/Makefile.in	(revision 375a068b3108942e02b2e4dce77e8cb4873fd692)
+++ src/prelude/Makefile.in	(revision c5a8c5bf2ad8fe91b68614a3c832241d460c3571)
@@ -438,5 +438,5 @@
 prototypes.awk :
 
-../libcfa/libcfa-prelude.c : prelude.cf extras.cf builtins.cf
+../libcfa/libcfa-prelude.c : prelude.cf extras.cf builtins.cf ${abs_top_srcdir}/src/driver/cfa-cpp
 	${AM_V_GEN}${abs_top_srcdir}/src/driver/cfa-cpp -l prelude.cf $@  # use src/cfa-cpp as not in lib until after install