On Sat, Aug 21, 2010 at 03:16:49PM +0100, Rui Paulo wrote: > > On 21 Aug 2010, at 14:59, Kostik Belousov wrote: > > > On Sat, Aug 21, 2010 at 01:48:05PM +0000, Rui Paulo wrote: > >> Author: rpaulo > >> Date: Sat Aug 21 13:48:04 2010 > >> New Revision: 211561 > >> URL: http://svn.freebsd.org/changeset/base/211561 > >> > >> Log: > >> Link drti.o with a PIC version of libelf. This is needed because > >> drti.o depends on libelf and this avoids linking every other drti.o > >> program (namely programs with USDT probes) with libelf. > > What is wrong with having libelf as dependency of the resulting > > binary ? > > The resulting binary can be a library. If I add drti.o to the libthr > library, every other program will break because it can't find libelf > symbols. The only way to fix it would be to rebuild every program that > depends on libthr and I don't want that to happen.
I do not understand this. If drti.o is added to a library, library should also record a dependency on libelf, i.e. be linked with it. Since you already modifying link command to add drti.o, what is the problem to add -lelf ?
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