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Christopher Bahns wrote: > > Do you suppose this is why I'm having my size problems? I had some posts a few days ago about the 14% increase in my program's size when going from > Microtec Research's (MRI) M68K compiler to GNU's. This increase put me over the limit in my flash memory and now we may have to do something funky to get > the program to work under GNU. Maybe in the end the size increase with GNU will actually prevent us from converting over to it, which would be a bit > unfortunate. > > I don't know if I'm pulling in unused functions from object files that have at least one function that I am using, but now I suspect I might be (perhaps > MRI's engineers just did a better job of optimizing their code.....). GNU does support removal of unused functions. Compile with -ffunction-sections -fdata-sections (and with g++ also -fvtable-gc). And then invoke GNU ld with --gc-sections. If using gcc to invoke the linker (as you should be) this is done by using -Wl,--gc-sections on the link line. This only works for statically linked executables, but the size saving can be considerable. Jifl -- Red Hat, 35 Cambridge Place, Cambridge, UK. CB2 1NS Tel: +44 (1223) 728762 "Plan to be spontaneous tomorrow." || These opinions are all my own fault ------ 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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