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List:       mozilla-builds
Subject:    Re: Can't build Linux
From:       Steve Lamm <slamm () netscape ! com>
Date:       1998-12-29 23:27:24
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There was a thread on this ealier titled,

	"undefined reference to nsDerivedSafe... ?"

-slamm

Here's the text from one of the ealier posts,

Cesar Rincon wrote:
> 
> Jeremy Lea wrote:
> > Hi,
> >
> > On Sun, Dec 20, 1998 at 07:03:56AM +0000, Cesar Rincon wrote:
> > > Heaven knows I tried, but I can't find what's going on. My build fails
> > > almost at the end, during the linking of viewer.
> > >
> > > I'm running Linux 2.0.33, gcc 2.7.2.3. Just updated my GTK to 1.1.9,
> > > pulled the source on Saturday (Dec 19) at about 22:00. My seamonkey was
> > > building nicely last Friday.
> >
> > Same problem on FreeBSD with gcc 2.7.2.x but it goes away for egcs 1.1, so
> > I'm guessing it's a bug in the template support for the old gcc (which is
> > not known for good C++ support.)
> >
> > Don't have a fix yet...
> 
> I looked around a bit after posting that. nsDerivedSafe<T>::AddRef and
> Remove are declared in xpcom/public/nsCOMPtr.h as
> 
> #ifndef NSCAP_NO_MEMBER_USING_DECLARATIONS
>       using T::AddRef;
>       using T::Release;
> #else
>       nsrefcnt AddRef();
>       nsrefcnt Release();
> #endif
> 
> NSCAP_NO_MEMBER_USING_DECLARATIONS is defined a bit earlier in the same
> file:
> 
> #if defined(__GNUG__) && (__GNUC_MINOR__ <= 90) && !defined(SOLARIS)
>   #define NSCAP_NO_MEMBER_USING_DECLARATIONS
> 
> For gcc 2.7, it is NSCAP_NO_MEMBER_USING_DECLARATIONS then. Now, the
> implementations of that methods are in that file, too, but they don't
> get compiled unless the macro NSCAP_NEED_UNUSED_VIRTUAL_IMPLEMENTATIONS
> is defined too, which is not.
> 
> So, I guess gcc 2.7 needs unused virtual implementations. However, I
> tried defining it, and it builds, but then both viewer and appruner
> crash with a segmentation fault at startup, so I don't know if what I
> did is a fix at all.
> 
> I can't remember right now, but I think gdb mentioned something about
> NSPR and threads and timers, when digging in the core file (I was
> falling asleep at the keyboard; I'll check again later today).
> 
> Salud.
> 
> --
> César Rincón
> Guadalajara, México    http://www.geocities.com/SiliconValley/Park/6244/
> ------------------------------------------------------------------------
> Sex, Unix & Rock'n'roll!

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