--- libmu_scm/Makefile.in.orig	2016-12-14 21:02:33 UTC
+++ libmu_scm/Makefile.in
@@ -1583,6 +1582,7 @@ install-data-hook:
 	 cd $$here
 
 @GINT_COND_DOC_TRUE@@GINT_COND_GUILE_OK_TRUE@.c.doc:
+@GINT_COND_DOC_TRUE@@GINT_COND_GUILE_OK_TRUE@	$(AM_V_GEN)$(CC) -DSCM_MAGIC_SNARF_DOCS $(snarfcppopts) -E $< > $<.prep
 @GINT_COND_DOC_TRUE@@GINT_COND_GUILE_OK_TRUE@	$(AM_V_GEN)$(CC) -DSCM_MAGIC_SNARF_DOCS $(snarfcppopts) -E $< | \
 @GINT_COND_DOC_TRUE@@GINT_COND_GUILE_OK_TRUE@	$(GUILE_DOC_SNARF) -o $@ || { rm $@; false; }