[haiku-bugs] Re: [Haiku] #8031: new gcc indirect linking policy changes cause build failures / missing symbols.
- From: "bonefish" <trac@xxxxxxxxxxxx>
- Date: Tue, 18 Oct 2011 15:57:33 -0000
#8031: new gcc indirect linking policy changes cause build failures / missing
symbols.
----------------------------+----------------------------
Reporter: kallisti5 | Owner: bonefish
Type: bug | Status: new
Priority: high | Milestone: R1/beta1
Component: Build System | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by bonefish):
Replying to [comment:7 kallisti5]:
> #gcc:
>
> {{{
> 09:40 < Zordan> if you are using e.g. newer gold linker
> (and perhaps newer regular ld as well?) then indirect shared
> library dependencies are no longer followed (e.g. shared
> libraries have to list their own direct dependencies)
> }}}
The first part of this statement seems to refer to what is explained in
the "UnderstandingDSOLinkChange" wiki page. It basically says that, if
your app uses a library function, it has to be linked directly to that
library and cannot rely on another library pulling in the first library.
This makes sense. (BTW, it is something that was mandatory on BeOS as
well, as the runtime loader did support resolving symbols only in direct
dependencies.)
The part in the last parentheses is a bit ambiguous. It might either mean
when a library is linked, it has to be linked against all its dependencies
or that when linking against a library all its dependencies have to be
listed as well. The latter I would find rather ridiculous.
Anyway, we do list libroot_build.so, both when linking libbe_build.so as
well as when linking the app, so either way any condition the statement
might refer to is fulfilled.
What apparently seems to be the problem is that the linker (the verbose
output doesn't show which one is actually invoked by collect2 -- the error
message says "ld returned 1 exit status", but that might not refer to the
actual name of the linker) even requires the libraries to be listed in
dependency order. That I would consider a bug or at least a seriously
missing feature.
--
Ticket URL: <http://dev.haiku-os.org/ticket/8031#comment:10>
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