[Bug 166252] Review Request: perl-Gnome2-Canvas

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Summary: Review Request: perl-Gnome2-Canvas


https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=166252





------- Additional Comments From rc040203 at freenet.de  2005-08-25 10:25 EST -------
(In reply to comment #12)
> (In reply to comment #10)
> 
> Okay so I've done some more testing beyond the supplied demo program. Whatever
> the build error is that is producing the "Unrecognized argument in LIBS ignored:
> '-pthread'" message it doesn't appear to be causing a functional problem on my
> system.

-pthread, when being passed to the linker, is expands to -lpthread on i386
[It is a gcc-spec macro; c.f. the lib: rule in gcc -dumpspecs]

>  but it doesn't appear to be having a functional impact
As long as -pthread expands only to '-l*' containing libraries on the library
search path, this won't have any functional impact. 

However, you can't rely upon this, because GCC can change this at any time and
because GCC can apply target specific linker flags there.

I.e. Gnone2-Canvas probably is functional on all targets where GCC expands
-pthread to -lpthread, but is likely not to work on other targets and also is
not unlikely to break with future GCC updates.

> -pthread is a valid argument to both the linker and to gcc so I'm not really
> sure why Makefile.PL is throwing the arguments away. 
ExtUtils::MakeMaker only lets -l and -L flags pass through and filters out
anything else.

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