--- a/src/Makefile.in	2005-08-30 03:58:00.000000000 -0400
+++ b/src/Makefile.in	2008-02-13 14:38:04.000000000 -0500
@@ -882,7 +882,8 @@ spice.o: main.c
 		$(COMPILE) -DSIMULATOR -o spice.o  -c $(srcdir)/main.c
 
 ngspice.idx: makeidx
-	./makeidx $(srcdir)/ngspice.txt
+	gcc -I/usr/include -I.. -I./include $(makeidx_SOURCES) -o makeidx-host
+	./makeidx-host $(srcdir)/ngspice.txt
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT: