Hi, On 05/20/2014 09:05 PM, chru...@suse.cz wrote: > Well that is the problem with implicit rule that pulls in all the > dependencies. > > The problem is that Make is confused because we don't go the *.c + *.h > -> *.o -> binary route but take shortcut *.c -> binary instead. > > If you look at the list of implicit rules (make --print-data-base) there is: > > LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) > > %: %.c > $(LINK.c) $^ $(LOADLIBES) $(LDLIBS) -o $@ > > > So the final command used to link the testcase is: > > $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $^ $(LOADLIBES) > $(LDLIBS) -o $@ > > If you get choose to use the .c -> .o rule instead it uses: > > %.o: %.c: > $(COMPILE.c) $(OUTPUT_OPTION) $< > > Note the $< instead of $^. In this case only first dependency is passed to the > compiler. > > > One solution would be to override the build-in rule with our own: > > % %.c: > $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $< $(LOADLIBES) > $(LDLIBS) -o $@ > > However there may be places that will break by this change. > > Or we may do a big step forward and stop using the implicit rules complety and > write our own rules (which is what quite a lot of projects does). We can even > utilize the gcc -MM and generate all testcase dependencies automatically...
Thanks very much for your help. I will try to make a better version. Regards, Xiaoguang Wang > ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Ltp-list mailing list Ltp-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ltp-list
