mksig{list,name} must be built for the host not target.

--- lib/util/Makefile.in.orig	2015-03-19 17:17:25.578303273 +0100
+++ lib/util/Makefile.in	2015-03-19 17:17:55.059482991 +0100
@@ -146,10 +146,10 @@ signame.c: mksigname
 	./mksigname > $@
 
 mksiglist: $(srcdir)/mksiglist.c $(srcdir)/mksiglist.h $(incdir)/sudo_compat.h $(top_builddir)/config.h
-	$(CC) $(CPPFLAGS) $(CFLAGS) $(DEFS) $(srcdir)/mksiglist.c -o $@
+	$(BUILD_CC) $(CPPFLAGS) $(BUILD_CFLAGS) $(DEFS) $(srcdir)/mksiglist.c -o $@
 
 mksigname: $(srcdir)/mksigname.c $(srcdir)/mksigname.h $(incdir)/sudo_compat.h $(top_builddir)/config.h
-	$(CC) $(CPPFLAGS) $(CFLAGS) $(DEFS) $(srcdir)/mksigname.c -o $@
+	$(BUILD_CC) $(CPPFLAGS) $(BUILD_CFLAGS) $(DEFS) $(srcdir)/mksigname.c -o $@
 
 $(srcdir)/mksiglist.h: $(srcdir)/siglist.in
 	@if [ -n "$(DEVEL)" ]; then \
