Link against sources instead of installation paths that aren't DESTDIRed.
Patch taken from gentoo portage, upstream status unknown, author
probably Diego Pettenò.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>

--- a/slsh/Makefile.in
+++ b/slsh/Makefile.in
@@ -80,7 +80,7 @@
 $(OBJDIR)/slsh_exe: $(OBJDIR)/slsh.o $(OBJDIR)/readline.o
 	$(CC) $(CFLAGS) $(OBJDIR)/slsh.o $(OBJDIR)/readline.o -o $(OBJDIR)/slsh_exe $(LDFLAGS) $(SRC_LIBS)
 $(OBJDIR)/slsh: $(OBJDIR)/slsh.o $(OBJDIR)/readline.o
-	$(CC) $(CFLAGS) $(OBJDIR)/slsh.o $(OBJDIR)/readline.o -o $(OBJDIR)/slsh $(LDFLAGS) $(INST_LIBS)
+	$(CC) $(CFLAGS) $(OBJDIR)/slsh.o $(OBJDIR)/readline.o -o $(OBJDIR)/slsh $(LDFLAGS) $(SRC_LIBS)
 $(OBJDIR)/slsh.o: $(OBJDIR) slsh.c slsh.h config.h Makefile
 	cd $(OBJDIR) && $(CC) -c $(CFLAGS) $(SLANG_SRCINC) $(DEFS) $(SRCDIR)/slsh.c
 $(OBJDIR)/readline.o: $(OBJDIR) readline.c slsh.h config.h Makefile