Fixing parallel build issue

http://bugs.gentoo.org/show_bug.cgi?id=310037

--- muparser_v132/Makefile.in
+++ muparser_v132/Makefile.in
@@ -291,7 +291,7 @@
 @COND_SHARED_1@	rm -f $(DESTDIR)$(prefix)/$$f; \
 @COND_SHARED_1@	done
 
-@COND_SAMPLES_1@$(top_builddir)/samples/example1/example1$(EXEEXT): $(EXAMPLE1_OBJECTS) $(__muParser_lib___depname)
+@COND_SAMPLES_1@$(top_builddir)/samples/example1/example1$(EXEEXT): $(EXAMPLE1_OBJECTS) $(__muParser_lib___depname) lib
 @COND_SAMPLES_1@	$(CXX) -o $@ $(EXAMPLE1_OBJECTS) -L$(top_builddir)/lib   -L$(srcdir)/lib $(LDFLAGS)  -lmuparser$(DEBUG_BUILD_POSTFIX) $(LIBS)
 @COND_SAMPLES_1@	
 @COND_SAMPLES_1@	$(__example1___mac_setfilecmd)