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Hi David, Thanks for your input. I tried with the flags you mentioned in your mail like: # how to compile C source %.o: %.c @echo compiling $< $(CC) -ffunction-sections -fdata-sections $(CFLAGS) $(INCLUDE) $< -o $@ Even with link I tried with a flag --gc-sections (found by searching in mail archives) like: test.srec: $(OBJ) appcon.o $(LD) --gc-sections $(LDFLAGS) $^ mylib.a $(LIBS) -o $@ But still I get the same size of srec as before, i.e my application is increased by the size of mylib.a even without any function call from mylib.a, along with a number of warnings like: ******************************************** compiling appcon.c h8300-hitachi-hms-ld: warning: no memory region specified for section `._init' h8300-hitachi-hms-ld: warning: no memory region specified for section `.configu' h8300-hitachi-hms-ld: warning: no memory region specified for section `.timerIn' ************************************************* What am I doing something wrong? regards /Mohammad David Korn wrote: >>-----Original Message----- >>From: Mohammad Saleem [mailto:mosa@enea.se] >>Sent: 18 November 2001 10:36 >> > > >>I have a lib mylib.a (20 kb) which I want to link with my application. >>My application gets 20 kb bigger as soon as I link it with mylib.a >>without any function being called from mylib.a. >>It seems to me that I have built mylib.a so that the whole lib >>is linked >>during linking process even if no one method is being called. >>Now my question is which flag should I use to build mylib.a so >>that only >>those functions are linked which are being called. >>If no function is called then linking mylib.a shouldn't affect >>the size >>of my application. >> > > Alas, the linker is fairly dumb, and can only include or exclude parts >of a lib file on the basis of the section name (.text, .data or .bss). > > Fortunately the compiler is fairly smart, and has an option >-ffunction-sections that puts every function in a different section. This >should supposedly do the job you wish. > > DaveK > ------ Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ Want to unsubscribe? Send a note to crossgcc-unsubscribe@sourceware.cygnus.com
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