I have confirmed that "-Wno-unused-command-line-argument" suppresses the "-pthread" warning for clang 6.0 and does not trigger a warning in gcc 4.9.
Works for me! John On Fri, Apr 3, 2015 at 5:21 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > I wrote: > > Peter Eisentraut <pete...@gmx.net> writes: > >> These warnings also happen with older versions of clang. Now idea how > >> to fix yet. I'm thinking that clang should be fixed, because these > >> warnings are stupid. > > > Yeah, they're utterly stupid; whoever put them in obviously doesn't > > have a clue about typical Makefile construction. I wonder if next > > we'll see complaints about unnecessary -D or -I switches. > > > Having said that, I did look awhile ago about how we might get rid of > > them, and it seems not easy; for starters we would need to drop the > > assumption that CFLAGS can always be included when linking. Also, > > AFAICT -pthread sometimes *is* required when linking; so it's > > not even very obvious when to suppress the switch, even if we could > > do so without wholesale rearrangement of our FLAGS handling. > > On the other hand, there's often more than one way to skin a cat. > It occurred to me that maybe we could just turn off this class of warning, > and after some experimentation I found out that > "-Wno-unused-command-line-argument" does that, at least in the version > of clang that Apple's currently shipping. > > Who's for enabling that if the compiler takes it? > > regards, tom lane >
