On 02/18/10 01:54, Michal Marek wrote: > On 18.2.2010 03:27, Randy Dunlap wrote: >> Can someone clarify the difference(s) in these variables, please? >> >> Documentation/kbuild.txt says about objtree: >> >> $(objtree) is the directory where output files are saved. >> The output directory is often set using "O=..." on the commandline. >> >> >> Documentation/makefiles.txt says about obj: >> >> $(obj) >> $(obj) is a relative path which points to the directory >> where the target is saved. Always use $(obj) when >> referring to generated files. >> >> >> These appear to be the same to me, but let me be more specific: > > $(objtree) is the toplevel build directory (as the doc says the > directory you specify with O=). > $(obj) is the directory below $(objtree) where the targets of the > current Makefile are saved: > > $ make O=/build/dir > $(objtree) == /build/dir > $(obj) == /build/dir/fs in fs/Makefile > > >> In some cases (or places), Documentation/DocBook/Makefile uses >> $(obj) and other cases/places, it uses $(objtree). >> Does it have these correct, or should some of them be fixed? > > $(objtree)/Documentation/DocBook could be written as $(obj) in > Documentation/DocBook/Makefile. > > hth, Yes, it does. I get it. Thanks. -- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
